Freelance SQL programmer jobs, employment

We are seeking someone who is passionate about software development, has strong technical expertise, communicates clearly in English, and can work collaboratively with our team. This is an ongoing opportunity for a skilled engineer who can provide dedicated weekly availability to help build and maintain enterprise-level software solutions.

1. Responsibilities
- Design, develop, test, and maintain scalable applications using C# and .NET technologies
- Build and enhance backend services, APIs, and enterprise applications
- Develop clean, maintainable, and high-performance code
- Participate in architecture discussions and technical decision-making
- Troubleshoot complex technical issues and improve application performance
- Collaborate with developers, product managers, and stakeholders
- Follow Agile/Scrum development practices
- Contribute to long-term product development and continuous improvements

2. Required Qualifications
- 8+ years of professional experience with C# and .NET development
- Strong experience with C#, .NET Framework, .NET Core / .NET 6+, ASP.NET Core, Web API, Entity Framework / Entity Framework Core, SQL Server
- Experience designing and developing RESTful APIs
- Strong understanding of Object-Oriented Programming (OOP), SOLID principles, and software design patterns
- Experience with enterprise application development
- Strong debugging and problem-solving skills
- Ability to work independently and manage development tasks effectively
- Strong English conversational and written communication skills

3. Preferred Qualifications
- Experience with Microsoft Azure or other cloud platforms
- Experience with Microservices architecture
- Experience with Angular, React, or other modern frontend frameworks
- Experience with CI/CD pipelines and DevOps practices
- Experience working with large-scale business applications

4. Engagement Details
- Long-term collaboration opportunity
- Dedicated weekly availability preferred (up to 40 hours/week depending on project needs)
- Remote work
- Flexible working arrangement
- Opportunity to contribute to ongoing software projects

5. Application Requirements

To apply, please provide:

- Your latest resume highlighting your C#/.NET experience
- A short 1–2 minute introduction video demonstrating your English communication skills and briefly describing your professional background
- A summary of your most relevant C#/.NET projects and responsibilities

After reviewing applications, selected candidates will be invited to a technical discussion to evaluate technical skills and project alignment.

I am the global procurement director of a chemical company. We have newly implemented S4 Hana. I want to build some analytical website either with BI tool

Enterprise WordPress/WooCommerce Marketplace Development (Custom Plugin) – Senior Developer Required

Project Overview

We are building a custom B2B marketplace for the landscaping industry (gardeners/contractors).

This is NOT a standard WooCommerce webshop. It is a lead marketplace where contractors purchase customer leads.

Consumers do not create accounts and do not log in.

Leads are manually reviewed and published by administrators.

Registered contractors can browse available leads, purchase them through WooCommerce, and immediately unlock the customer’s contact information after successful payment.

The platform must be built for long-term scalability, security, and maintainability. This is an enterprise-quality project rather than a quick MVP.

⸻

Technology Stack

Required:

* WordPress (latest version)
* WooCommerce (latest version)
* PHP 8.3+
* MySQL 8 / MariaDB
* Object-Oriented PHP
* Custom WordPress Plugin
* Git

Preferred:

* ACF Pro
* Composer
* WP-CLI
* Redis compatible
* REST API ready

No page builders.

No low-code marketplace plugins.

No unnecessary third-party plugins.

The marketplace logic must be fully custom.

⸻

Business Concept

The platform sells customer requests (“Leads”).

Example:

A homeowner requests a new fence.

An administrator reviews the request.

The administrator sets:

* title
* description
* location
* category
* selling price
* maximum number of sales

The lead becomes visible to contractors.

Contractors purchase access.

Immediately after payment they receive the full customer information.

⸻

Important Business Rule

A lead is NOT exclusive.

Each lead may be sold up to a configurable maximum number of times.

Default:

Maximum sales = 7

Example:

Lead #124

Sales limit: 7

Current sales: 5

Available: Yes

After purchase:

Current sales: 6

Still available.

After the 7th purchase:

Status automatically changes to:

“SOLD OUT”

The lead disappears from all contractor listings.

No further purchases are possible.

The implementation must guarantee that the maximum number of sales can never be exceeded, even under simultaneous purchase attempts.

Race conditions must be prevented.

⸻

User Roles

Administrator

Can:

* Create leads
* Edit leads
* Delete/archive leads
* Set prices
* Set maximum sales
* View all purchases
* Manage contractors
* View reports
* Export data
* Issue refunds
* Manage categories

⸻

Contractor

Can:

* Register
* Log in
* Browse available leads
* Purchase leads
* View purchased leads
* Download invoices
* Manage profile
* Change password

Cannot:

* Edit leads
* View customer details before purchase
* View sold-out leads
* Purchase the same lead twice

⸻

Lead Fields

Each lead should support at least:

* Title
* Description
* Category
* Subcategory
* Province
* City
* Postal code
* Coordinates
* Budget
* Requested service
* Price
* Sales limit
* Current sales count
* Status
* Customer name
* Customer email
* Customer phone
* Customer address
* Internal notes
* Created date
* Updated date
* Audit history

⸻

Public Listing

Before purchase contractors should only see:

* Title
* General description
* City
* Category
* Asking price

The following information must NEVER be visible before purchase:

* Customer name
* Email
* Phone number
* Address
* Exact location

⸻

Purchase Flow

1. Contractor logs in.
2. Contractor opens a lead.
3. Limited information is shown.
4. Contractor clicks Buy.
5. Lead is added to WooCommerce cart.
6. Checkout.
7. Payment.
8. WooCommerce order completed.
9. Access granted immediately.
10. Customer information becomes visible.
11. Invoice generated.
12. Confirmation email sent.

⸻

Marketplace Logic

The custom plugin should manage:

* Lead availability
* Sales counter
* Purchase permissions
* Access rights
* Customer data visibility
* Purchase history
* Lead status
* Audit logs

WooCommerce should only handle:

* Cart
* Checkout
* Payments
* Orders
* Taxes
* Invoices
* Emails

⸻

Dashboard

Contractor dashboard should include:

* Available Leads
* Purchased Leads
* Purchase History
* Invoices
* Account Settings

Filters:

* Province
* City
* Distance (future-ready)
* Category
* Price
* Date
* Availability

⸻

Admin Dashboard

The administrator should be able to:

* Create leads
* Edit leads
* Duplicate leads
* Archive leads
* Pause leads
* Close leads
* Change prices
* Adjust sales limits
* View all purchases
* Search contractors
* Export reports
* Manage categories
* View logs

⸻

WooCommerce Integration

The solution must integrate cleanly with WooCommerce.

No WooCommerce core modifications.

No hacked templates.

No direct database changes to WooCommerce tables.

Use official hooks and APIs.

⸻

Security Requirements

Enterprise-level security is mandatory.

Requirements include:

* WordPress Coding Standards
* PSR-12
* Nonce verification
* Capability checks
* Prepared SQL statements
* Input sanitization
* Output escaping
* CSRF protection
* XSS prevention
* SQL injection prevention
* Rate limiting where appropriate
* Secure password handling
* No customer data leakage

Customer information must only become accessible after a successful purchase.

⸻

Performance Requirements

The platform should support thousands of leads and thousands of contractors.

Requirements:

* Optimized database queries
* Proper indexing
* Pagination
* Object caching compatibility
* Lazy loading where appropriate
* No N+1 query issues
* Efficient admin tables

⸻

Concurrency

This is a critical requirement.

If multiple contractors attempt to purchase the final available lead simultaneously, the system must never exceed the configured sales limit.

The implementation must safely handle concurrent purchases using transactional logic and proper locking mechanisms where necessary.

⸻

Logging & Audit Trail

Every important action should be logged.

Examples:

* Lead created
* Lead edited
* Lead purchased
* Refund issued
* Sales limit changed
* Contractor registered
* Login failures
* Permission changes

⸻

Code Quality

Required:

* SOLID principles
* Object-oriented architecture
* Modular codebase
* Reusable services
* Clear folder structure
* Dependency separation
* PHPDoc documentation
* Meaningful class names
* Meaningful commit history

No procedural spaghetti code.

⸻

Deliverables

The project must include:

* Complete custom WordPress plugin
* Source code
* Database migrations (if applicable)
* Installation instructions
* Configuration guide
* Technical documentation
* Inline documentation
* README
* Git repository

⸻

Future Scalability

The architecture should allow future expansion without major refactoring.

Possible future features include:

* Credit-based purchasing system
* Monthly subscriptions
* AI lead scoring
* Mobile application
* REST API
* Webhooks
* CRM integrations
* Stripe Connect
* Multi-language support
* Multi-country support
* SMS and WhatsApp notifications

⸻

What We Are Looking For

We are looking for a senior WordPress engineer with proven experience building complex custom plugins and enterprise-level WooCommerce integrations.

Please provide:

* Portfolio of similar projects
* GitHub (if available)
* Architecture approach
* Estimated timeline
* Estimated budget
* Relevant experience with custom WooCommerce development

This project prioritizes quality, maintainability, scalability, and clean architecture over speed. We are looking for a long-term development partner rather than someone who will simply assemble existing plugins.

Role purpose

Own the independent validation and control layer for a multi-entity Order-to-Cash implementation. Profile data, design reconciliation controls, plan and execute testing, classify defects, validate cutover results, and preserve production-readiness evidence. Work under the direction of the End-to-End O2C Program Architect and coordinate closely with Finance, Salesforce, IES, integration, implementation, operating, and end-user workstreams.

Key responsibilities

Profile Salesforce, QuickBooks Online, Intuit Enterprise Suite, connector, and migration data for duplicates, incomplete records, inconsistent mappings, credits, payments, and posting or conversion risks.
Define data-quality rules, survivorship, matching, validation, control totals, and exception categories.
Prepare cleanup and validation workbooks and document authorized client decisions.
Execute or validate approved corrections within the managed implementation team.
Create reconciliation workbooks for customers, items, invoices, credits, payments, entities, dimensions, periods, opening balances, and integration results.
Define record-count, financial-total, subledger-to-ledger, source-to-target, and period-based controls.
Test invoice creation, retry behavior, duplicate prevention, routing, payment status, cash application, reconciliation, reporting, and cutover scenarios.
Coordinate system, integration, migration, UAT, regression, and cutover testing.
Maintain a defect register and classify issues as true defects, data issues, configuration issues, provider issues, user/process issues, requirements gaps, or enhancements.
Analyze data, logs, test results, and exceptions to isolate root causes.
Define entry and exit criteria and support production-readiness decisions.
Own the disposition and acceptance of material defects and reconciliation exceptions.
Preserve scripts, evidence, test results, approvals, and readiness records.
Support cutover, stabilization, handoff, SOP review, and training.
Escalate blockers and unresolved risks.

Success in the role

Data is reliable and reconciles across systems, test evidence supports production readiness, defects are correctly classified and resolved, and no critical issue blocks production.

Preferred background

Meaningful hands-on experience in:
CRM, accounting, or ERP data quality
Deduplication, matching, survivorship, and exception rules
Reconciliation, including subledger-to-general-ledger controls
Migration validation and source-to-target comparison
SQL and data analysis
Advanced Excel, Power Query, and/or Power Pivot
Test planning, integration testing, migration testing, UAT, and regression
Defect management and root-cause analysis
Cutover readiness and production stabilization
Salesforce, QuickBooks, Intuit Enterprise Suite, or comparable ERP systems

General QA or training experience without strong reconciliation and data-analysis capability is not sufficient.

Screening questions

Describe a project in which you led data quality, reconciliation, and testing across a CRM and accounting or ERP system.
How did you design cross-system reconciliations, including control counts, financial totals, and exception categories?
How did you prove that customers, invoices, credits, payments, entities, dimensions, and periods migrated correctly?
Describe a defect that initially appeared to be an integration or configuration issue but was actually caused by data, provider behavior, requirements, or user process. How did you prove the cause?
Which tools did you use for SQL, data comparison, reconciliation, test management, and defect tracking?
What production-readiness criteria did you apply to a financial-system integration or migration?

# Intuit Enterprise Suite Technical Implementation Lead

Recommended role purpose

Lead the technical configuration, migration, testing, and production implementation of Intuit Enterprise Suite within an approved multi-entity Order-to-Cash architecture. Translate Finance-approved accounting decisions into system configuration, data structures, migration specifications, controls, reconciliations, and operating documentation.

This is a technical implementation role. It is not a bookkeeping, tax, outsourced accounting, or routine QuickBooks administration position.

Responsibilities to strengthen

Add explicit technical ownership for:

IES environment and tenant configuration
Multi-entity structure and permissions
Configuration workbooks and deployment records
Data extraction, transformation, validation, and loading
Import tools, APIs, connectors, and structured data exchange
Migration trial runs and defect resolution
Posting, routing, synchronization, and configuration troubleshooting
Technical test cases and cutover runbooks
Configuration documentation and support handoff

The person should implement Controller-approved accounting decisions, not make those decisions independently.

Preferred background

Replace the current first bullet with:

Hands-on implementation of Intuit Enterprise Suite, QuickBooks Online Advanced, or a comparable cloud accounting or ERP platform

QuickBooks Enterprise experience may be useful, but it should not be presented as equivalent to IES. A desktop QuickBooks Enterprise consultant may not have the required cloud, API, integration, or migration skills.

Structured data migration and transformation
Advanced Excel and data-analysis tools
SQL, scripting, ETL, or comparable technical data skills
API and commercial connector experience
Production cutover and post-launch troubleshooting
Technical configuration documentation

About the Project

We’re building a large-scale platform that brings together e-commerce, subscription billing, financial services, digital mobile top-ups, inventory management, affiliate marketing, and third-party integrations in one connected system.

The platform serves several user types, including administrators, customers, retailers, influencers, and employees. It also manages inventory across multiple warehouses and locations, recurring product orders, retailer wallets and credit accounts, commission settlements, promotional campaigns, and international mobile top-up services.

This is not a basic website or a short-term prototype. It is a production-level platform that requires thoughtful architecture, strong performance, reliable integrations, detailed transaction tracking, and clean, maintainable code.

We are looking for a senior full-stack .NET developer who enjoys solving complex business problems and can take ownership of important parts of the platform.

What You’ll Work On

Your responsibilities will include:

* Designing and developing scalable backend services using modern .NET and ASP.NET Web API
* Implementing CQRS with MediatR, including validation, logging, caching, and other pipeline behaviors
* Building a multi-platform and multi-tenant architecture with shared inventory and isolated platform operations
* Developing an advanced inventory management system with FIFO stock layers, warehouse-level tracking, and location-level availability
* Building a retailer ecosystem that supports prepaid wallets, postpaid credit, commissions, settlements, and transaction history
* Integrating digital top-up providers such as Reloadly and DingConnect
* Implementing reliable transaction processing, status tracking, retries, error handling, and reconciliation
* Developing a multi-party commission system for the platform, retailers, influencers, and other participants
* Building influencer referral links, customer attribution, sales tracking, and commission calculations
* Creating a flexible promotions and discount engine for coupons, campaigns, customer-specific pricing, and dynamic offers
* Integrating Stripe and PayPal for one-time payments, recurring billing, refunds, and subscription management
* Integrating shipping and carrier services such as Shippo
* Building event-driven email and SMS notification workflows
* Applying Redis and in-memory caching to improve application performance
* Implementing structured logging, monitoring, and application observability
* Writing unit tests and maintaining a high-quality, well-documented codebase
* Reviewing existing architecture and recommending practical improvements where needed

Technology Stack

* Backend: C#, .NET 9/10, ASP.NET Core Web API
* Frontend: Angular
* Architecture: Clean Architecture, CQRS, MediatR, Domain-Driven Design
* Database: SQL Server
* Payments: Stripe and PayPal
* Digital Top-Ups: Reloadly and DingConnect
* Shipping: Shippo
* Validation: FluentValidation
* Logging: Serilog and built-in .NET logging
* Caching: Redis and in-memory caching
* Additional Technologies: REST APIs, middleware, dependency injection, background processing, and event-driven workflows

Required Experience

You should have:

* Strong professional experience with C#, .NET Core, ASP.NET Core, and Web APIs
* Experience designing scalable, production-grade applications
* A solid understanding of CQRS, MediatR, Clean Architecture, and Domain-Driven Design
* Strong SQL Server and relational database design skills
* Experience integrating payment gateways such as Stripe or PayPal
* Experience working with subscriptions, recurring payments, webhooks, and transaction lifecycles
* Experience integrating and troubleshooting third-party APIs
* Hands-on experience with Redis or other distributed caching solutions
* Experience with structured logging, monitoring, and production debugging
* A strong understanding of secure financial and transactional workflows
* The ability to write clean, testable, and maintainable code
* Clear communication skills and the ability to explain technical decisions

Experience with Angular is preferred, but strong backend-focused candidates may also be considered.

Nice to Have

It would be helpful if you have experience with:

* Marketplace, ERP, retail, or multi-vendor platforms
* Wallets, credit systems, commissions, settlements, or financial ledgers
* Inventory management across multiple warehouses
* Promotion, coupon, discount, or dynamic-pricing engines
* Affiliate or influencer tracking systems
* Event-driven architecture, message queues, or microservices
* Background jobs and automated transaction processing
* Performance tuning and high-traffic system optimization
* E-commerce subscription and recurring-order platforms

Project Scope

This is a long-term engagement involving continuous feature development, integration work, testing, performance optimization, and platform scaling.

You will be expected to take ownership of assigned modules, communicate progress clearly, identify potential risks early, and contribute to important architectural decisions.

We value developers who are dependable, detail-oriented, and comfortable working on complex systems where inventory, payments, commissions, subscriptions, and third-party transactions must remain accurate and reliable.

When Applying

Please include:

* A brief introduction about your relevant experience
* Examples of complex .NET platforms you have worked on
* Your experience with Stripe, PayPal, subscriptions, wallets, commissions, or financial transactions
* Your experience with CQRS, MediatR, Redis, and Clean Architecture
* Your availability and preferred working hours
* Your hourly rate
* A link to your GitHub, portfolio, or relevant project examples, when available

Please begin your proposal with the words “Enterprise .NET Platform” so we know you have carefully reviewed the project requirements.

Summary
We are building a high-scale, enterprise-grade platform that combines e-commerce, fintech, subscription billing, and third-party top-up services integrations. The system supports multiple user roles (Admin, Customer, Retailer, Influencer,Employees) and includes advanced features such as inventory management across warehouses and locations, automated order subscriptions, and global mobile top-up services.

This is a complex, production-level system requiring scalable architecture, high performance, observability, and clean coding practices.

Key Features & Responsibilities:

Design and develop scalable backend services using .NET 9
Implement CQRS with MediatR (validation, logging, caching behaviors)
Build multi-platform (multi-tenant) architecture with shared inventory and platform-isolated operations
Develop advanced inventory system with FIFO-based stock layers, multi-warehouse and multi-location tracking
Implement retailer ecosystem including prepaid wallets, postpaid credit, commission distribution, and settlement flows
Integrate third-party APIs (Reloadly, DingConnect) for digital top-up services with transaction tracking and retry handling
Develop multi-party commission system (platform, retailer, influencer revenue sharing)
Build influencer tracking system (referral links, attribution, commission calculation)
Implement flexible promotions and discount engine (campaigns, coupons, dynamic pricing)
Integrate payment gateways (Stripe, PayPal) including support for recurring billing flows
Integrate third party carrier services (Shippo)
Implement notification system (email/SMS) with event-driven triggers
Apply caching strategies (Redis/in-memory) and performance optimization
Ensure clean architecture and maintainable codebase
Write unit tests and maintain high code quality.

Tech Stack:

* Backend: .NET Core / .NET 10, C#, ASP.NET Web API
* Architecture: Clean Architecture, CQRS, MediatR, Domain-Driven Design (DDD)
* Database: SQL Server
* Frontend: Angular
* Integrations: Stripe API, PayPal API, Reloadly API, DingConnect API
* Logging: Serilog / built-in logging framework
* Caching: In-Memory Cache, Redis (distributed caching)
* Validation: FluentValidation
* Other: REST APIs, Middleware, Dependency Injection.

Required Skills:

* Strong experience in .NET Core / ASP.NET Web API
* Solid understanding of CQRS, MediatR, and scalable system design
* Experience building promotions/discount engines or pricing systems
* Experience with logging frameworks (e.g., Serilog) and monitoring practices
* Hands-on experience with caching (in-memory, Redis)
* Experience with payment gateway integrations (Stripe/PayPal)
* Experience integrating third-party APIs
* Knowledge of subscription systems and recurring billing
* Strong SQL and database design skills
* Experience with Angular is a plus
* Familiarity with enterprise application architecture

Nice to Have:

* Experience building marketplace or ERP-like systems
* Experience with financial systems (wallets, credit systems, commissions)
* Knowledge of event-driven architecture or microservices
* Experience with performance tuning and scalability

Project Scope:

This is a long-term engagement involving continuous development, performance optimization, and system scaling. The developer will be responsible for building robust backend systems with proper logging, caching, monitoring, and advanced pricing/promotions logic.

Hi,

I am a Data Engineer, I have skills on Synapse Azure but I need your help in DBT. This is an urgent request please respond.

Thanks you,
Mounika

Overview
We run a German multi-brand e-commerce business (Amazon, Shopify, Otto) with an existing BigQuery data warehouse and a per-SKU contribution-margin model (CM1–CM3). We need an experienced data engineer to build two daily, keyword-level ingestion pipelines — Google Ads and Amazon Advertising (v3) — into BigQuery, and join them to our existing SKU-level margin so we can optimize campaigns on true profit, not just ACOS.
This is an extension of a live, well-structured warehouse — not a greenfield build. You must already be fluent in BigQuery, Python, and both ad APIs.


What you'll build
Amazon Advertising API (v3) daily pipeline — Sponsored Products first — at keyword/target/ASIN grain, with correct attribution-lookback handling (rolling re-sync, idempotent).
Google Ads API daily pipeline — keyword + search-term level.
A documented mart joining keyword spend → attributed revenue → contribution margin (CM3) per SKU.
Scheduling (GCP), secrets in Secret Manager, logging/alerts, and a reconciliation check vs. the ad dashboards.
Schema docs + runbook + handover.


You must have
Proven Google Ads API and Amazon Advertising API (v3) pipeline experience (show examples).
Strong Python + BigQuery + Google Cloud (Cloud Run/Functions, Cloud Scheduler, Secret Manager, IAM).
Deep understanding of ad attribution windows and incremental/idempotent loads.
Solid data modeling + SQL; dbt a plus. E-commerce/marketing data a plus.


To apply, please answer briefly:
Link or short description of a Google Ads API pipeline and an Amazon Ads API pipeline you built.
How do you handle Amazon Ads attribution lookback in an incremental, idempotent load?
Which orchestration would you use on GCP, and why?
Rough estimate (hours/weeks) and your rate.

Job Overview
We are seeking an experienced Healthcare Systems Analyst for an immediate 6-month contract position, with a strong possibility of extension.

In this role, you will analyze system workflows, oversee complex API integrations, and handle EDI transactions within our healthcare technology framework. If you have deep technical analytical skills and proven experience navigating the healthcare domain, we would love to hear from you.

Key Responsibilities
🔘 Analyze, evaluate, and optimize complex software systems and technical workflows.
🔘 Design, test, and implement robust API integrations and interfaces.
🔘 Manage and troubleshoot EDI transactions (e.g., 837, 835, 270/271, 834) to maintain data compliance and integrity.
🔘 Act as a primary liaison between cross-functional technical teams, business units, and external stakeholders.
🔘 Translate business requirements into clear technical specifications and system documentation.

Required Qualifications
🔘 6+ years of experience as a Systems Analyst or similar technical analytical role.
🔘 Healthcare Domain Expertise (Mandatory): Strong knowledge of healthcare data standards, compliance, and systems workflows.
🔘 API Integration: Proven hands-on experience with API development, RESTful web services, and third-party system integrations.
🔘 EDI Expertise: Demonstrated hands-on experience with EDI transactions.
🔘 Soft Skills: Exceptional analytical, problem-solving, and stakeholder management skills.

Contract & Logistics Details
🔘 Work Location: 100% Remote
🔘 Contract Duration: 6 months (Possibility of extension)
🔘 Start Date: Immediate

How to Apply
Please submit your proposal along with:

🔘 A brief summary of your experience with healthcare EDI and API integrations.
🔘 Your relevant resume highlighting similar past contract roles.

Python Data Engineer — Airflow, SQL, APIs & Production Pipelines

We are looking for a strong **Python Data Engineer** to build and improve the data infrastructure supporting a sports analytics and quantitative research platform.

This is a hands-on engineering role. You will be working with real-world data from APIs, live feeds, files, and external providers—data that may be delayed, duplicated, incomplete, inconsistently formatted, or subject to unexpected schema changes.

We are not looking for someone who only builds dashboards, runs notebooks, or writes one-off scraping scripts. We need an engineer who can build reliable, testable, production-grade pipelines.

## Responsibilities

* Build and maintain Python-based data ingestion pipelines.
* Orchestrate scheduled workflows using Apache Airflow.
* Integrate REST APIs, websocket feeds, files, and third-party data providers.
* Write and optimize complex SQL transformations.
* Build clean, structured, and reusable data models.
* Implement data validation, monitoring, logging, retries, and alerting.
* Debug missing records, duplicates, schema changes, pipeline failures, and data inconsistencies.
* Improve the reliability and performance of existing infrastructure.
* Document pipelines, datasets, dependencies, and technical decisions.
* Work directly with quantitative researchers and data scientists to turn data requirements into dependable systems.

## Required Experience

* Strong Python development skills.
* Strong SQL skills.
* Hands-on experience building ETL or ELT pipelines.
* Production experience with Apache Airflow.
* Experience integrating APIs and handling pagination, authentication, rate limits, retries, and schema changes.
* Experience with relational databases or cloud data warehouses.
* Strong debugging and problem-solving ability.
* Experience with Git, testing, logging, and maintainable software-development practices.

## Preferred Experience

* Snowflake.
* AWS or another cloud platform.
* Docker.
* CI/CD.
* Streaming or near-real-time data.
* Websockets, RabbitMQ, Kafka, or other message-queue systems.
* Sports, betting, financial-market, or other event-driven data.
* Data infrastructure supporting machine-learning or quantitative-research workflows.

Sports knowledge is useful but not required. Engineering quality, reliability, and ownership matter more.

## What We Are Not Looking For

Please do not apply if your experience is primarily limited to:

* Data visualization or dashboards.
* Jupyter notebooks without production deployment.
* Basic web scraping.
* No-code ETL tools.
* Academic projects without meaningful hands-on pipeline ownership.
* Managing engineers without personally writing and debugging code.

## How to Apply

Begin your proposal with the words **“Reliable Pipelines”** so we know you read the full post.

Then answer the following:

1. Describe the most technically difficult data pipeline you personally built.
2. What parts of the architecture and code did you own directly?
3. How have you used Apache Airflow in production?
4. Describe a pipeline failure or data-quality issue that was difficult to diagnose. How did you solve it?
5. What is your experience with Python, SQL, APIs, and Snowflake?
6. Are you comfortable completing a short paid technical assessment?

Please include relevant GitHub repositories, code samples, architecture diagrams, or examples of production systems you have built.

Generic or AI-generated proposals that do not answer the questions above will not be considered.

Project Overview
I am looking for an experienced Project Manager (PM) with a proven track record in ERP migrations to lead our transition from Microsoft Dynamics NAV (version: 2018]) to Microsoft Dynamics 365 Business Central (SaaS/Cloud).
This is a complex, high-stakes project involving data migration, business process re-engineering, third-party system integrations, and end-user training. I need a PM who can act as the crucial bridge between our internal executive stakeholders, functional consultants, and the technical development team.

Key Responsibilities
* Planning & Strategy: Develop a detailed migration roadmap (Project Charter, Gantt Chart, Work Breakdown Structure) identifying key phases—Discovery, Data Cleansing, Test Migrations, UAT, and Final Go-Live.
* Team Coordination: Manage cross-functional, distributed teams including AL/.NET developers, functional consultants, and database administrators.
* Risk Management: Proactively identify, track, and mitigate risks throughout the migration lifecycle—with a strong focus on data integrity and minimizing system downtime.
* Stakeholder Management: Provide clear, regular status reporting to C-level executives and key business users. Manage expectations regarding process changes and timeline adjustments.
* UAT & Testing Oversight: Oversee the User Acceptance Testing (UAT) cycles, ensuring that critical bugs are triaged and resolved before the final production cutover.
* Change Management: Collaborate on training materials and drive internal communication to ensure a smooth transition for all end-users.

Must-Have Requirements
* Experience: Minimum 5+ years in ERP project management, with at least 2 successfully delivered end-to-end migration projects from NAV to Business Central (or D365 F&O, though NAV/BC is highly preferred).
* Functional/Technical Knowledge:
* Solid understanding of NAV/BC architecture (Table Objects, Pages, Codeunits, and Extension-based development).
* Familiarity with data migration strategies, including the standard Data Migration Framework (DMF) and/or third-party ETL tools.
* Methodologies: Strong experience with Agile/Hybrid (Scrum) as well as Waterfall approaches for the final deployment phase.
* Certifications: Must hold one of the following – PMP, PRINCE2, or PMI-ACP.
* Tools: Proficiency in Azure DevOps, Jira, or Microsoft Project for backlog management, sprint planning, and resource allocation.
* Language: Fluent in English (both written and spoken) – must be comfortable leading daily stand-ups and delivering weekly executive status reports with total clarity.

Nice-to-Have (Preferred Qualifications)
* Official Microsoft certification in Dynamics 365 Business Central (MB-800).
* Experience integrating Business Central with external ecosystems (Power Platform, SharePoint, or REST/SOAP APIs).
* Working knowledge of SQL Server (ability to write basic queries for pre- and post-migration data validation).
* Prior experience managing projects in [insert your industry, e.g., Manufacturing / Distribution / Professional Services].

Expected Deliverables
1. Comprehensive Project Management Plan – including WBS, resource allocation, and timeline with clear milestones.
2. Weekly Progress Reports – covering task completion, resource utilization, RAID logs (Risks, Assumptions, Issues, Dependencies).
3. UAT & Testing Strategy – including detailed test scripts, defect tracking reports, and sign-off criteria.
4. Go-Live & Rollback Plan – a clear cutover strategy with a contingency rollback plan in case of critical failures.
5. Final Lessons Learned Report – a post-mortem document summarizing successes, challenges, and recommendations for future improvements.

Commitment & Schedule
* Duration: 3 to 6 months (depending on data complexity and customization scope).
* Workload: 20–40 hours per week.
* Core Hours: Must be available for daily check-ins overlapping with Central European Time (CET) business hours.
* Payment: Hourly or milestone-based (fixed price per phase) open to negotiation based on your expertise.

We seek a Databricks AI Solutions Engineer with hands-on AgentBricks experience to build and deploy Databricks Apps. Must have practical expertise with Genie Spaces, Knowledge Assistant, and multi-agent supervisor architectures. Requires experience in chat session/history management, customizing native Databricks chat interface, etc. Strong Python/SQL skills and Unity Catalog familiarity required.

Project Overview
We are seeking an expert Tableau Developer to design, build, and deploy an interactive front-end reporting solution for our Healthcare Professional (HCP) trigger email campaigns.
• The Challenge: We currently have robust Tableau reporting for standalone, single-job email bulk broadcasts. However, we need to transition to linked trigger campaign reporting. This requires moving beyond flat, single-job metrics to build a relational interface that connects separate email events into a single, cohesive, chronological timeline for each individual doctor.
• The Data is Ready: Our backend team has already structured, cleaned, and compiled the data into a single, multi-tab Excel workbook for this initial pilot phase. The tabs cleanly mirror our production database schema.

• Your Core Task: This is a 100% front-end UI/UX and logical dashboard architecture role. You will connect to our prepared Excel workbook and use Tableau’s native calculation features to sequence these job numbers chronologically for each individual doctor to visualize their journey. We will provide our existing single-job dashboards to serve purely as a reference for our corporate UI/UX style guidelines and brand color standards.
Project Scope & Phased Rollout
• Phase 1 (Immediate - Fixed Price): Build a highly focused 2-campaign pilot report using the provided Excel sheets to establish and validate our tracking logic.
• Future Phases (Hourly Extension): This dashboard must be architected with scalability in mind. It will eventually grow to include our entire portfolio of trigger campaigns. Adding future campaigns or new job numbers must not require rebuilding the visual layout or rewriting core calculations.
Technical Environment
• BI Tool: Tableau Server
• Data Source: Production Data Source: SQL Server
o Pilot Data Source: Excel (Flat data extracts exported directly from our SQL Server tables to mimic the production schema for rapid prototyping)

Scope of Work & Front-End Requirements
1. Interactive Journey Visualizations
We want to move away from flat grid tables and see the chronological movement of doctors through trigger pathways.
• Sequential Flow Design: Build a clear, multi-step visual path (such as a Sankey diagram, custom sequential funnel, or process flow chart) showing how HCPs advance, branch off, or drop out after receiving Trigger Email 1, Trigger Email 2, etc.
• Conditional Branching Visuals: Design the dashboard to clearly show split paths based on engagement (e.g., If a doctor opens/clicks Email 1, they go down Path A; if they do not, they go down Path B).
• Drop-off Point Highlighting: Visually emphasize the exact stages in the trigger sequence where doctors stall or become disengaged.
• Velocity Metrics: Display the average duration (days/hours) it takes an HCP to move between specific triggers directly inside the visuals.
2. Tab Layout & Functional Views
• Executive Summary View: High-level performance KPIs of the trigger flows (Overall Conversion Rate, Total Reach, Open/Click trends).
• HCP Lookup / Audit View: A search feature where a user can input a specific NPI (National Provider Identifier) or HCP ID to populate a linear, timestamped timeline of every email sent, opened, and clicked for that specific person.
• Cohort Segmentation Matrix: Dynamic filtering options allowing users to slice the journey maps by HCP Specialty, Territory, or Target Decile without crashing dashboard performance.

3. Advanced Tableau Logic & Scalability
• Dynamic Chronological Sequencing: Create table calculations using INDEX(), RANK_UNIQUE(), or LOOKUP functions partitioned by HCP ID and ordered by timestamp to dynamically assign step numbers.
• Level of Detail (LOD) Cohorts: Write fixed LOD expressions to determine exactly when a doctor entered a trigger sequence.
• Migration Readiness: The dashboard must be built using the Excel extracts in a clean, logical layer that mirrors our SQL Server schema. All journey grouping, indexing, and sequencing must be dynamic, driven by data-level relationships and parameters. Swapping the data source from Excel to SQL Server in Phase 2 must require zero rewriting of calculations or visual layouts.
• Row-Level Security (RLS): Apply user filtering so territory managers can only see authorized HCP data in accordance with pharmaceutical data governance.
Candidate Requirements
• Expert Tableau Developer: Comprehensive portfolio demonstrating advanced custom chart types, strong spatial UI design, and dashboard optimization for speed.
• Pharma/Healthcare Context: Prior experience displaying commercial analytics for Healthcare Professionals (NPI tracking, specialty grouping) is highly preferred.
• Expert Table Calculations: Deep understanding of complex table calculations, window functions, and multi-layered LOD expressions.

Screening Questions (Please answer these to be considered)
Question 1: Excel-to-SQL Server Migration
"For Phase 1, we are providing a single Excel workbook with tabs that mirror our production SQL Server schema. How will you configure the Data Source layer in Tableau to ensure that when we switch from the Excel pilot to a live SQL Server connection in Phase 2, none of your calculated fields, relationships, or sheets break?"

Question 2: Chronological Journey Logic (LODs & Table Calcs)
Our event log records rows for every single 'Sent', 'Opened', and 'Clicked' event with a timestamp. To build a linear journey map per doctor, we need to know the order of steps (e.g., Step 1, Step 2, Step 3) regardless of the calendar date. What specific type of Tableau calculations or window functions would you use to dynamically sequence these job numbers for each individual HCP_ID?"

Question 3: Portfolio & Industry Context
"Have you ever built a sequential funnel, Sankey diagram, or multi-step journey map in Tableau before? If so, please briefly describe how you structured the visual flow. Bonus points: Have you worked with pharmaceutical, healthcare, or B2B marketing data involving NPI numbers or HCP specialties?"

We're building a Web3 marketing website. The Figma design is complete and approved: around 30 pages, visually rich, with an animated hero and interactive image treatments (hover and click states) used throughout the site.

To be clear on scope: this is a marketing site, not a dApp. No wallet connection, no on-chain data, and no smart contract interaction. We need an experienced Next.js developer with strong motion and interaction skills.

The design is final. We're looking for faithful implementation, with expertise applied to code architecture, animation quality, and performance.

Figma Dev Mode access will be provided.

Approach We're Looking For

This is not 30 bespoke pages. The design reuses sections heavily — hero variants, feature grids, CTA bands, card layouts, and interactive image galleries. We want a reusable component library built first, then pages composed from it, then those components exposed to our CMS so our marketing team can assemble and edit pages.

Please include your proposed implementation approach when submitting a proposal.

Scope of Work

- Build a Next.js (App Router) site from the approved Figma design
- Establish design tokens and a reusable component library before page assembly
- Implement all pages, matching spacing, typography, colors, radii, and shadows to the Figma specification
- Implement the animated hero and all interactive image behaviors (hover and click states) across the site
- Integrate Payload CMS so marketing can edit copy, images, and page composition
- Responsive across desktop, tablet (max-width: 1024px), and mobile (max-width: 768px)
- Responsive navigation: horizontal navigation on desktop and an accessible hamburger menu with smooth transition below 1024px
- Export, optimize, and correctly serve all image and icon assets according to the provided naming conventions
- GitHub repository connected to Vercel with working preview and production deployments

Technical Requirements

- Framework: Next.js (App Router) with TypeScript
- CMS: Payload CMS
- Database: PostgreSQL (Neon or Vercel Postgres)
- Styling: CSS Modules with design tokens as :root CSS variables and BEM-style class naming. No Tailwind, Bootstrap, or component UI kits.
- Animation: Use either GSAP (with ScrollTrigger) or Motion. Simple hover transitions should be implemented with CSS.
- Motion accessibility: Full prefers-reduced-motion support
- Rendering: All page content must be server-rendered and included in the initial HTML
- Performance: next/image for raster assets, lazy loading below the fold, and minimal layout shift. Target Lighthouse mobile performance score of 85 or higher on representative pages.
- Semantic HTML5
- Accessible interactions with proper button elements, aria attributes, visible focus states, and full keyboard navigation
- No jQuery
- Avoid unnecessary dependencies

I need an expert in Duck DB and Azure to optimize and apply the right indexes for our data loads and optimize SQL queries. A quick turnaround is required, with a review session with my developer to ensure alignment before proceeding with the task.

We are looking for an experienced Full Stack Developer to help build, improve, and maintain a modern web application. The ideal candidate should be comfortable working across both frontend and backend systems, understanding existing codebases, implementing new features, fixing bugs, and delivering clean, scalable solutions.

You will work closely with our team to develop features, integrate APIs, optimize performance, and ensure the application is reliable and maintainable.

Responsibilities
Develop and maintain frontend applications using modern JavaScript frameworks.
Build and improve backend APIs and server-side functionality.
Work with databases, data models, and backend services.
Integrate third-party APIs and external services.
Debug and resolve frontend/backend issues.
Improve application performance, security, and reliability.
Write clean, maintainable, and well-documented code.
Use Git workflows for collaboration and version control.
Deploy and test applications in staging/production environments.
Required Skills
Strong experience with JavaScript/TypeScript.
Experience with React.js, Next.js, or similar frontend frameworks.
Experience with Node.js and backend frameworks such as Express.js.
Knowledge of REST APIs and API integrations.
Experience with SQL and/or NoSQL databases (PostgreSQL, MySQL, MongoDB, etc.).
Familiarity with Git and collaborative development workflows.
Understanding of authentication, security, and deployment processes.
Nice to Have
Experience with cloud platforms (AWS, Azure, or similar).
Experience with Docker and CI/CD pipelines.
Experience working with existing production applications.
Knowledge of testing frameworks.
Experience with performance optimization.
Project Expectations
Provide regular progress updates.
Communicate clearly about challenges and solutions.
Deliver high-quality, tested code.
Be able to work independently and manage assigned tasks.

Digital Venture (Zoho/Bitrix24)Budget: ₹10,000 / month (Retainer-based)Project Type: Ongoing / Monthly Maintenance

Project Description:I am seeking a highly skilled Business Automation Specialist to centralize and automate workflows for four distinct digital businesses: EdTech, Real Estate, Travel Agency, and a Healthcare (blood-testing) venture. I have no offline presence and need a "One-Stop Solution" to handle leads and sales swiftly

.Key Responsibilities:CRM Centralization: Design and implement a multi-pipeline CRM (e.g., Zoho One or Bitrix24) to manage separate sales funnels for all four industries in one place.
Lead Capture & Workflow Automation: Connect digital ads (Meta/Google) and website forms to the CRM using tools like Zapier or Zoho Flow to ensure no lead is missed.

Sales Funnel Development: Create industry-specific automated nurture sequences (emails/WhatsApp) for student enrollment, property inquiries, travel itineraries, and healthcare bookings.

Integrated Systems: Ensure all platforms—including accounting (Zoho Books), communication (WhatsApp/Zendesk), and marketing—are seamlessly connected for a unified digital command centre.Preferred Skills:Proven experience with Zoho One, Bitrix24, or HubSpot

.Proficiency in no-code automation tools like Zapier, Make.com, or Zoho Flow.Strong understanding of digital marketing and lead generation across multiple sectors.

About the Project
We are looking for an experienced Freelance Full Stack Developer to support us on a temporary software development project.
The freelancer will work on the development and improvement of a modern web application, contributing to both frontend and backend implementation. The assignment is project-based and focused on delivering specific technical tasks and features within the agreed project period.
This is a temporary freelance/contract assignment, not a permanent employment position.
What You Will Do
* Develop and improve web application features across frontend and backend.
* Build and integrate RESTful APIs and third-party services.
* Develop responsive and user-friendly interfaces.
* Implement backend services and business logic.
* Work with SQL and NoSQL databases.
* Fix bugs, troubleshoot technical issues, and improve application reliability.
* Optimize application performance and scalability.
* Write clean, maintainable, and well-tested code.
* Participate in technical discussions and code reviews when required.
* Document relevant technical work and implementation decisions.
* Collaborate remotely with our development team throughout the assignment.
Technical Responsibilities
Depending on the project requirements, the freelancer may work with:
* React, Next.js, Vue.js, or similar frontend frameworks.
* JavaScript / TypeScript.
* Python with Django or FastAPI.
* Node.js with Express.js or NestJS.
* REST APIs and GraphQL.
* PostgreSQL, MySQL, MongoDB, and Redis.
* Docker and Docker Compose.
* Git and GitHub.
* CI/CD pipelines.
* AWS, Google Cloud, Azure, or similar cloud platforms.
The exact technologies and tasks will depend on the freelancer's experience and the specific project requirements.
Required Skills
* 3+ years of professional Full Stack Development experience.
* Strong JavaScript/TypeScript skills.
* Strong experience with React, Next.js, Vue.js, or another modern frontend framework.
* Experience with Python, Node.js, or another backend technology.
* Practical experience building and integrating APIs.
* Experience with SQL and/or NoSQL databases.
* Understanding of authentication, authorization, and web security.
* Familiarity with Git and modern development workflows.
* Experience with Docker and deployment is preferred.
* Strong problem-solving and debugging skills.
* Ability to work independently in a remote freelance environment.
* Good written and verbal communication skills.
Project Duration and Availability
* Engagement type: Temporary freelance / contract assignment
* Work schedule: Part-time
* Compensation: $75 per hour
* Expected availability: Approximately 25 hours per week
* Duration: Approximately 3–4 months initially, with the possibility of additional project work depending on requirements and performance.
* Work arrangement: Fully remote
* Location: Open to international freelancers
Expected Deliverables
The freelancer will be expected to contribute to agreed project deliverables, which may include:
* New frontend and backend features.
* API development and integration.
* Database implementation or optimization.
* Bug fixes and technical improvements.
* Performance and reliability improvements.
* Automated tests and technical documentation.
* Code reviews and improvements to existing implementation.
Specific deliverables and milestones will be agreed upon with the selected freelancer before the assignment begins.
If you are an experienced Full Stack Developer and are interested in this temporary project, please submit your application with your experience, relevant projects, availability, and expected hourly rate.


Skills: Database Development, Node.js, Web Development, Back End Development, ReactJS, Front End Development

Looking for a web developer to update and maintain our newly designed WORDPRESS site. Must be a WP expert and familiar with EASYCART, as well as PHP, HTML, CSS. This will be an ongoing project.

We need an EXPERT developer experienced in malware cleanup and vulnerability scanning, along with experience preventing SQL injection attacks. Lastly, expert in WordPress security issues. USA and Canada only (must have a physical IP address within North America and not outsourced to other countries).

We are looking for a specialist who can create clear and detailed technical specifications for software developers.
Responsibilities:
Gather and analyze project requirements.
Communicate with the client or team to clarify project details.
Prepare well-structured technical specifications for developers.
Describe system functionality, business logic, workflows, user interfaces, and technical requirements.
Support the development process by answering questions related to the documentation when needed.
Requirements:
Experience writing technical specifications or software requirements.
Understanding of web and/or mobile application development.
Strong analytical and communication skills.
Ability to organize information clearly and accurately.
Attention to detail and responsibility.
Nice to Have:
Experience as a Business Analyst, System Analyst, or Project Manager.
Understanding of UX/UI principles and software development processes.
What We Offer:
Remote work.
Project-based collaboration with the possibility of long-term cooperation.
Competitive compensation based on experience and project scope.
If you can transform ideas into clear technical documentation that developers can implement efficiently, we'd love to hear from you.

Mission: Technical assessment of a developer candidate (fintech) — fixed date. Context: we are hiring a lead developer to rebuild a neobank platform (Node.js/TypeScript, React, PostgreSQL, AWS ECS/RDS, Terraform, GitHub Actions CI/CD). We are not technical and need an independent senior expert to assess one candidate on our behalf. The candidate has already completed a paid technical assignment (a mini onboarding app — simulated payment, mock KYC, automatic account creation — deployed on AWS with IaC, CI/CD and monitoring); the code is delivered and waiting for review. FIXED SCHEDULE — please only apply if you are firmly available: - Tuesday: code + infrastructure review (read-only GitHub access + evaluation grid provided, ~2-3h). - Tuesday or Wednesday: you lead a 60-min live debrief in English with the candidate (walkthrough, architecture questions, one live code modification requested on the spot). - Written one-page assessment in English: strengths, weaknesses, risks, hire/no-hire recommendation. IMPORTANT: the candidate is an English speaker — the debrief is entirely in English; fluent spoken English is mandatory. No intro call needed; we align in writing to move fast. Profile: 8+ years, hands-on Node.js/TypeScript, AWS and Terraform in production, CI/CD, fintech experience a plus, experience running technical interviews. Ability to explain findings to non-technical decision-makers.

🧠 Position Overview

We are growing our global engineering team and are seeking experienced Full Stack Engineers to help deliver high-quality software solutions for a diverse portfolio of US-based clients.

This is a hands-on development role where you'll design, build, maintain, and continuously improve production-grade web applications. You'll work closely with engineers, designers, and product teams to create scalable software while occasionally collaborating with client stakeholders on technical discussions and solution planning.

We're looking for professionals who combine strong engineering expertise with outstanding communication skills and a collaborative mindset.

🎯 Key Responsibilities

• Design, develop, and maintain scalable full-stack web applications
• Translate business requirements into robust technical solutions
• Develop and integrate REST APIs, databases, cloud services, and third-party platforms
• Participate in solution architecture, technical planning, and design discussions
• Write clean, efficient, maintainable, and production-ready code
• Troubleshoot software issues and optimize application reliability and performance
• Collaborate effectively with engineering, product, QA, and design teams throughout the software development lifecycle

✅ Required Qualifications

• Minimum 2+ years of professional experience in Full Stack Software Development
• Strong experience with JavaScript, React, Node.js, REST APIs, SQL/NoSQL databases, and modern web development technologies
• Near-native English proficiency (C2 level — spoken and written)
• Ability to communicate confidently and professionally with US-based clients whenever required
• Availability to overlap with EST, PST, or CT business hours
• Excellent analytical thinking, debugging, and problem-solving abilities
• Strong ownership mindset with a high level of accountability and professionalism

➕ Preferred Qualifications

• Experience supporting US or international clients
• Previous involvement in customer-facing technical projects or consulting engagements
• Familiarity with Agile development methodologies and modern engineering practices
• Experience working successfully within remote or distributed engineering teams

💡 What We're Looking For

Successful candidates will demonstrate the ability to:

• Deliver reliable, high-quality software solutions
• Clearly explain technical concepts to both technical and non-technical stakeholders
• Take ownership of projects from planning through deployment
• Adapt quickly to evolving technologies and project requirements
• Work effectively within collaborative, cross-functional teams

💰 Compensation & Career Growth

• Hourly Compensation: $63–$97/hour
• Expected Workload: 20–30 hours per week
• Estimated Monthly Compensation: $8,000–$12,500
• Stable long-term engagement with an expected duration of 3–4+ years
• Outstanding career progression into Senior Engineer, Technical Lead, Staff Engineer, Engineering Manager, and other leadership positions

📩 Application Process

To apply, please include:

• A summary of your professional software development experience
• Your primary technology stack and technical strengths
• Portfolio links, GitHub profile, or examples of previous work
• Any experience collaborating directly with clients or stakeholders
• A short introduction video or voice recording (highly preferred)
• Your availability for working across US time zones

🚀 Additional Information

We're looking for engineers who are passionate about building production-quality software while establishing long-term careers within a collaborative engineering environment. If you enjoy solving challenging technical problems, communicating effectively, and working on impactful projects for US-based clients, we'd love to hear from you.

All interviews, candidate assessments, and communication before contract initiation will be conducted exclusively through Upwork.

Only apply for who based in Brazil. and add your github profile and your resume as attachemnt. otherwise, it will be ignored.

We're looking for an experienced Vue.js Developer to help build and enhance a modern web application. You'll work closely with our product designer and backend developer to implement responsive, high-quality user interfaces and integrate REST APIs.

This is an opportunity to join an ongoing project with the potential for long-term collaboration if we're a good fit.

Responsibilities
Develop responsive user interfaces using Vue.js 3
Build reusable and maintainable components
Integrate RESTful APIs
Convert Figma designs into pixel-perfect pages
Optimize application performance and loading speed
Debug and resolve frontend issues
Collaborate with backend developers and designers
Write clean, well-documented, and maintainable code
Required Skills
3+ years of experience with Vue.js
Strong knowledge of JavaScript (ES6+)
Experience with Vue 3 and Composition API
HTML5 and CSS3
TypeScript (preferred)
Tailwind CSS or Bootstrap
Vue Router
Pinia or Vuex
Axios or Fetch API
Git/GitHub
Nice to Have
Nuxt.js
Vite
Firebase
Node.js
Docker
AWS, Vercel, or Netlify deployment
Unit testing (Vitest/Jest)
Project Details
Project Type: Ongoing web application
Duration: 2–3 months (potential for long-term work)

We're looking for someone who:

Writes clean, scalable code
Communicates clearly and proactively
Pays attention to UI/UX details
Has experience working on production applications
Can work independently and meet deadlines

To Apply, please include the following:

Links to 2–3 Vue.js projects you've built.
Your experience with Vue 3, Pinia, and TypeScript.
Your availability (hours/week).
Briefly describe your role in your most recent Vue.js project.

We're looking forward to working with a skilled Vue.js developer who takes pride in building high-quality, user-friendly applications.

Looking for an experienced OTT/ Streaming Platforn Developer with knowledge of CLEENG Subscription Mgmt System to configure/setup:
- Subscription Management(SM) and
- Merchant on Record(MoR) for tax compliance for:
1)TWO subscription events and,
2) FIVE one-time events
for a new streaming platform .

Note: Only Developers with CLEENG experience must apply and Developers must demonstrate proficiency with CLEENG system and configurations

We are looking for a skilled .NET Developer to join our project. You will be responsible for creating clean, scalable, and high-performing code to help build our core application features.Key

Responsibilities:

* Develop robust and secure backend systems.Build and maintain scalable RESTful APIs.Integrate external third-party software and services.Optimize database queries and application performance.

* Troubleshoot, debug, and fix software issues.Required Skills:Strong proficiency in C# and .NET Core / ASP.NET Core.

* Experience with Entity Framework and SQL Server or PostgreSQL.Solid understanding of RESTful API design and implementation.

* Familiarity with Git version control.Good communication and problem-solving skills.

Project Type & Schedule:
* Project Type: One-time project
* Workload: Part-time / Flexible hours
* Duration: To be discussed during the interview

We are looking for an experienced Shopware 6 developer to perform a security update and technical review of our existing e-commerce store.

Our shop is currently running on Shopware 6.6.10.6. The main goal is to safely update the system to the latest compatible and secure Shopware version while keeping the storefront and all existing functionality stable.

Scope of work
Review the current Shopware installation and server environment
Check the installed Shopware version for known security vulnerabilities
Review installed plugins and the active theme for update compatibility
Create a full backup of the database and application files before starting
Perform the Shopware security update
Update Composer dependencies where necessary
Update compatible plugins without introducing breaking changes
Run Shopware migrations and rebuild the cache
Check scheduled tasks and the message queue
Test the storefront, administration panel, checkout, customer registration, payments, shipping methods, and email notifications
Review application and server logs for errors after the update
Fix minor compatibility issues directly related to the security update
Provide a brief summary of the completed work and any remaining recommendations
Important requirements
Strong experience with Shopware 6.6
Good knowledge of PHP, Symfony, Composer, MySQL, Twig, and Shopware CLI commands
Experience performing production Shopware updates
Understanding of Shopware plugins, themes, scheduled tasks, and message queues
Ability to minimize downtime and avoid data loss
Clear communication and documentation

The update should preferably be tested in a staging environment before being applied to production.

Please include examples of similar Shopware updates you have completed and briefly explain your usual update process.

This may lead to ongoing Shopware maintenance and development work.

I'm an independent web entrepreneur based in France. I ship a lot of small projects fast: Node.js apps, WordPress (PHP) plugins, and n8n automations.
The code works, but I want an independent second pair of eyes on security and coherence before things go live.

What I'm looking for
Someone strong in Node.js OR PHP/WordPress (both = ideal) who can review someone else's code and catch:
- Injection (SQL / NoSQL / command) and input validation
- Object-level authorization : is this user actually allowed to access this resource?
- Hardcoded secrets, exposed .env, poor key handling
Risky dependencies (malicious or outdated npm packages / plugins)
- Insecure configuration: overly open CORS, no rate limiting, verbose errors leaking the stack
- Overall code coherence (logic, edge cases, breakable points)

A note on language
I work in French, so a French-speaking profile is ideal for smooth communication. That said, strong English is perfectly fine, English-speaking applicants are welcome.

How we'd work
Short, recurring tasks: I send you a module / repo / workflow, you review it, you send me your findings.
Deliverable: a clear report : each issue graded by severity (critical / high / medium / low) with a fix recommendation. You can fix it.

Ongoing relationship if we click: I ship often, so this means steady work for you.
Paid per task or hourly or monthly, agreed together based on size.

How to apply
Keep it short. Tell me:
- Your strongest stack : Node.js, PHP/WordPress, or both.
- One or two lines on how you approach reviewing code you didn't write for security.
- your usage of vibe coding

We need an experienced Power Platform developer to build an automation pipeline connecting Microsoft Dynamics 365, SharePoint, and AI-assisted email drafting (via Power Automate + AI Builder).

What it does:
When a device order case is created in Dynamics, the system tracks it through fulfillment: capturing case details, matching incoming carrier shipping emails to the right case, looking up delivery estimates from the courier (UPS/FedEx), and using AI to draft a status-update email that a support agent reviews and sends. It also classifies incoming customer emails (shipping status, troubleshooting, or other requests) and auto-drafts replies for shipping/status inquiries — all drafts require human review before sending; nothing is ever sent automatically.

Core components to build:
1. A SharePoint list acting as the central tracking record (one row per case)
2. A Power Automate flow that fires on new Dynamics case creation and populates the tracking list
3. A Power Automate flow that fires on incoming carrier shipping emails, extracts tracking info, calls a courier lookup API, and triggers an AI-drafted update
4. A Power Automate flow that classifies incoming customer emails and auto-drafts replies for shipping-related inquiries, routing everything else to a human agent
5. AI Builder prompts (GPT-based) that draft emails according to a defined rules engine (varying by shipment status, courier, and account-specific requirements)

Requirements:
- Proven experience with Microsoft Power Automate, Dynamics 365 (Customer Service/Case entities), and SharePoint Lists
- Experience with AI Builder / GPT prompt integration within Power Automate
- Experience with API integrations (courier tracking lookups)
- Ability to work in a sandbox environment without touching production data
- Strong communication and documentation habits

Nice to have:
- Experience with Dynamics email templates and timeline integration
- Experience building multi-branch classification logic in Power Automate

Scope of engagement:
- Build and test entirely in a Dynamics 365 sandbox with mock data — no live customer communication during development
- Deliverables include working flows, an AI drafting prompt set, and documentation of the logic/rules implemented
- We will provide sample emails, field mappings, and business rules; developer confirms schema/logical field names once sandbox access is granted

Please share relevant past projects involving Power Automate + Dynamics 365 + AI Builder integrations.

About the Role
We're looking for an experienced AI Software Engineer to help build and scale our next-generation Voice AI platform. You'll work at the intersection of Large Language Models, telephony, APIs, and automation, developing intelligent voice agents that interact with customers in real time.

Your Responsibilities

Develop and improve our AI-powered Voicebot platform
Integrate and optimize Large Language Models (LLMs)
Design and optimize prompts and AI workflows
Connect external APIs and third-party services
Build integrations with CRM systems and other business platforms
Work with SQL databases and backend services
Develop scalable, high-performance backend solutions
Optimize real-time voice communication and automation workflows
Troubleshoot and improve system performance


Required Skills
Strong experience with

JavaScript / TypeScript
SQL databases
REST APIs
Git
Asynchronous programming
AI & LLM Experience
You should have hands-on experience with:

Large Language Models (LLMs)
Prompt Engineering
AI Agents
Function Calling
Context Management
Retrieval-Augmented Generation (RAG) (preferred)
Voice AI Experience
Ideally, you have experience with:

Voice over IP (VoIP)
SIP
Speech-to-Text (STT)
Text-to-Speech (TTS)
Automatic Speech Recognition (ASR)
Real-time audio streaming
Telephony APIs
Nice to Have
Experience with one or more of the following technologies:

Node.js
Twilio
LiveKit
OpenAI API
ElevenLabs
Cartesia
WebSockets
Docker
Linux
Cloud infrastructure (AWS, Azure, or Google Cloud)


What We're Looking For

Strong analytical and problem-solving skills
Ability to work independently and take ownership
Passion for AI, automation, and emerging technologies
Clean, maintainable, and scalable coding practices
Strong communication and teamwork skills


Tech Stack

JavaScript / TypeScript
Node.js
SQL
REST APIs
OpenAI / LLMs
Prompt Engineering
VoIP / SIP
STT / TTS / ASR
WebSockets
Git
Docker


Bonus Points
You'll stand out if you've already built:

AI voice assistants
Conversational AI applications
Call center automation platforms
Real-time communication systems
CRM integrations
High-volume telephony applications