Best Java Jobs & Projects

We are seeking a ClickUp Power User to enhance our operations by implementing efficient workflows and automations. The ideal candidate will have experience in optimizing project management systems and improving team productivity. Responsibilities include setting up dashboards, creating custom views, and integrating tools to streamline processes. If you have a passion for operations and a knack for problem-solving, we want to hear from you!

Job Description

I am looking for an experienced Python backend engineer to take a fully written, tested, and documented geospatial scoring platform and deploy it into production.

What is already done:

Complete Python backend codebase — scoring pipeline, REST API, database schema
705-line technical specification document covering every design decision
27-test test suite that passes from day one
Requirements.txt with all dependencies pinned
What you will do:

Deploy infrastructure on AWS or DigitalOcean (PostgreSQL + PostGIS, Redis, FastAPI)
Connect live external data pipelines via public APIs (OpenStreetMap Overpass, eBird Cornell Lab, Copernicus satellite)
Implement Stripe payment processing and automated PDF report delivery
Set up Redis caching, performance optimisation, and monitoring
Ensure security best practices — environment variable management, API key protection
Run the existing test suite and confirm all 27 tests pass in production
Tech stack:

Python 3.11 · FastAPI · PostgreSQL 15 + PostGIS · Redis · Celery · Rasterio · GDAL · Shapely · GeoPandas · OSMnx · NumPy · SciPy · Stripe · AWS EC2/RDS or DigitalOcean · ReportLab (PDF generation)

You are the right fit if:

You have deployed Python FastAPI backends in production before
You are comfortable with geospatial libraries (GDAL, Rasterio, PostGIS)
You understand environment variable security and have never committed secrets to git
You can work independently from a technical specification without hand-holding
You have experience with cloud infrastructure (AWS preferred, DigitalOcean acceptable)
Project scope: This is a fixed-price project with a clear deliverable: the platform running in production, all external data sources connected, Stripe payments live, test suite passing. Estimated 3–5 weeks for a strong engineer.

NDA required before I share the codebase. This is a patent-pending platform — confidentiality is taken seriously.

To be considered, please answer in your proposal:

Have you worked with geospatial libraries (GDAL, Rasterio, PostGIS, OSMnx)? Describe briefly.
Describe a Python backend you have deployed to production in the last 12 months.
What is your estimated timeline and fixed price for this scope?
Budget: Fixed price · USD $2,000–$5,000 depending on experience
Timeline: Start immediately · Target completion 4 weeks
Location: Worldwide · Async-friendly
Experience level: Expert

I need an independent senior developer to verify a complete handover package for mobile application
Need to have this skills
React Native
Node.js
AWS
Firebase
OpenAI API
Apple App Store
Google Play Console
Mobile App Architecture
Technical Audit / Code Review

Our agency is seeking a skilled full-stack developer with a strong background in AI integration. The ideal candidate will have experience in both front-end and back-end development, with a focus on creating seamless user experiences and integrating AI solutions. Responsibilities include developing responsive web applications, implementing AI-driven features, and collaborating with our team to enhance our product offerings.

We are looking for an experienced sports data / odds feed engineer or consultant who has worked with sports betting data systems, odds feeds, fixture mapping, market lifecycle, results processing, and settlement workflows.

This is not a content, affiliate, or marketing role. We are looking for someone with real backend/data experience in sports odds or iGaming data infrastructure.

Initial scope:
- Review our target architecture for a sports odds feed and settlement workflow
- Advise on fixture/event mapping, market mapping, odds updates, result handling, and settlement logic
- Explain practical options for using third-party odds feeds vs building internal feed-processing infrastructure
- Help define an MVP technical specification for a reliable B2B sports data service
- Identify risks around duplicate updates, out-of-order messages, suspended markets, cancelled events, re-settlement, and rollback handling

Ideal experience:
- Built or integrated sports odds feeds, sportsbook data APIs, or iGaming backend systems
- Experience with live and prematch odds data
- Understanding of fixtures, leagues, teams, markets, selections, odds movement, market status, results, settlement, and correction flows
- Backend experience with Node.js, TypeScript, Java, Go, Python, or similar
- Experience with WebSocket/API integrations, message queues, Redis, PostgreSQL/MySQL, RabbitMQ/Kafka, or similar
- Familiarity with providers such as LSports, Sportradar/Betradar, Genius Sports/BetGenius, FeedConstruct, BetConstruct, or similar is a plus
- Experience with smaller/regional sports data providers is also highly valuable

First milestone:
We want to start with a paid consultation and technical discovery. Please describe, without violating any NDA, one sports odds/data/settlement system you have worked on and what your role was.

Please answer these questions in your proposal:
1. Have you personally worked on odds feed, sports data API, or settlement logic? What exactly did you build?
2. Which sports data providers or sportsbook platforms have you integrated with?
3. How would you handle duplicate odds updates, delayed updates, and out-of-order messages?
4. How should a system handle settlement corrections or cancelled matches?
5. What would you recommend for an MVP architecture for a small B2B sports data feed service?

We have a consumer app live on both iOS (Swift) and Android (Kotlin) and need an experienced mobile engineer to build a new core feature: a real-time speech-to-speech AI conversation system.
The feature involves the app conducting a natural spoken conversation with the user, asking questions, listening, understanding responses, and continuing the dialogue adaptively based on context. As the conversation progresses, the system extracts structured data to build and update a persistent profile of the user across sessions.
What we need:
Production native iOS and Android experience (Swift and Kotlin). Strong on one, competent on the other at minimum. Hands-on experience with real-time voice AI integration. Solid understanding of mobile audio internals (AVAudioEngine on iOS, AudioRecord/Oboe on Android, session management, background audio). Real experience with the hard parts of conversational voice: latency budgeting, turn-taking, barge-in and interruption handling, echo cancellation, endpointing, and streaming over WebSocket or WebRTC. Experience with LLM structured outputs or function calling to extract structured data from unstructured conversation. Security-aware: no API keys shipped on-device, proper backend proxying.
Nice to have:
Voice cloning or high-fidelity TTS work. Backend skills to build the streaming and storage layer yourself. GDPR and sensitive data handling experience.
This is a meaningful feature build, not a weekend integration. We want someone who has shipped real-time voice in production and understands why it is hard.
In your application, please share:
Examples of voice or AI features you have shipped. Which platform you are strongest on. A brief note on a hard real-time voice problem you have solved.

We are looking for an experienced **AI-First Solution Architect / Lead Full-Stack Engineer** to help design and build a scalable, secure, and production-ready SaaS platform.

The ideal candidate should not only be a strong developer but also a strategic technical partner who can guide architecture decisions, recommend the right tech stack, and ensure the product is built for long-term performance, maintainability, and growth.

You will be responsible for translating business requirements into a clean technical architecture, building high-quality frontend and backend systems, and setting up the foundation for a scalable SaaS product.

**Responsibilities:**
- Design a scalable and maintainable SaaS architecture from the ground up
- Build responsive, high-performance frontend interfaces using React.js / Next.js
- Develop secure and efficient backend APIs using Node.js / Express
- Work with TypeScript across the stack for reliability and clean development
- Design database schemas, API structures, caching strategies, and data flows
- Optimize application performance, Core Web Vitals, and overall user experience
- Set up clean code structure, CI/CD workflows, and deployment-ready architecture
- Help us choose the right tools, databases, hosting, and infrastructure patterns
- Refactor or improve existing systems where needed
- Provide technical guidance on scalability, security, and long-term product growth

**Required Skills:**
- Strong experience with React.js, Next.js, TypeScript, Node.js, and Express
- Experience building SaaS platforms, dashboards, admin panels, or complex web apps
- Solid understanding of frontend architecture, SSR, SSG, routing, and state management
- Experience with REST APIs and/or GraphQL
- Strong knowledge of database design, API optimization, and scalable backend systems
- Ability to write clean, modular, maintainable code
- Experience with cloud deployment, CI/CD, and performance optimization
- Good understanding of security, scalability, and production-level development

**Nice to Have:**
- Experience with AI-first products or AI integrations
- Experience modernizing legacy applications or monolithic systems
- Experience with high-traffic platforms, multi-tenant SaaS, or enterprise-grade systems
- Strong UI/UX sense and ability to build polished, premium user experiences

**Who We're Looking For:**
We need someone who can think beyond just writing code. You should be able to understand the business goals, suggest better technical approaches, identify risks early, and help us build a product that is stable, scalable, and built to last.

This role is best suited for someone with strong architectural thinking, full-stack execution ability, and experience delivering production-ready SaaS applications.

**To Apply:**
Please share:
1. Examples of SaaS or complex web applications you have built
2. Your experience with React, Next.js, TypeScript, Node.js, and cloud deployment
3. How you usually approach architecture planning for a new product
4. Any experience you have with AI integrations or scalable SaaS systems

---

⚠️ **IMPORTANT NOTE — Please Read Before Applying:**

Proposals submitted **without a portfolio** will be **automatically rejected**. We receive a high volume of applications and only review candidates who can demonstrate real, production-level work.

Please make sure your proposal includes:
- **Live links** to projects you have built
- **GitHub profile** or code samples
- **App Store / Play Store links** if applicable

We are looking for a long-term technical partner who can help us build a reliable, high-performing product from concept to production. Only serious applicants with proven work should apply.

We are looking for an experienced Full-Stack JavaScript Developer to help us resolve several issues and implement minor improvements on an existing AI-powered customer support platform.

The platform is already built and actively used. We need a developer who can quickly understand the existing codebase, identify root causes of issues, and deliver reliable fixes.

This is initially a one-time project focused on bug fixing and stabilization. If the collaboration goes well, additional development tasks may follow.

Responsibilities:
- Investigate and fix existing frontend and backend bugs
- Debug React / Next.js application issues
- Resolve Node.js API and backend problems
- Fix database-related issues where necessary
- Improve application stability and performance
- Deliver clean, production-ready code

Required Qualifications:
- 4+ years of commercial Full-Stack JavaScript development experience
- Strong proficiency in React.js and/or Next.js
- Strong experience with Node.js and TypeScript
- Experience debugging complex web applications
- Experience with REST APIs
- Solid understanding of PostgreSQL
- Experience with Git-based workflows
- Strong problem-solving skills
- Ability to work independently

Preferred Qualifications:
- Experience with OpenAI or other LLM integrations
- Docker experience
- AWS experience
- Experience with SaaS platforms

Tech Stack:
- Next.js
- React.js
- Node.js
- TypeScript
- PostgreSQL
- OpenAI API
- Docker
- AWS

Project Scope:
The platform is already developed and deployed. We need assistance fixing several identified issues and making minor improvements to existing functionality.

When applying, please include:
- Relevant experience
- Similar projects
- Availability
- Hourly rate

I have an idea ready for an Android-only mobile app and now need a developer who can turn that concept into a polished, production-ready application. You will handle everything from structuring the project in Android Studio through to testing and publishing on Google Play, while keeping me in the loop with regular APK builds so I can review progress on a real device.

The core expectations are:
• Design and build a clean, intuitive Android interface that follows current Material guidelines.
• Implement the full feature set we discuss at kickoff, coding in Kotlin (or Java if you strongly prefer) with proper MVVM or other modern architecture.
• Integrate any required APIs and ensure smooth performance on a range of screen sizes.
• Provide a final release APK, full source code, and concise setup documentation so future updates are straightforward.

I’ll supply wireframes, branding assets, and a feature priority list once we start. If you’ve launched Android apps before and can share links or screenshots, that will help me gauge fit. Looking forward to collaborating and getting this app into users’ hands soon.

• Describe your recent experience with similar projects
• Include a link to your GitHub profile and/or website

Project Overview
We are seeking an experienced freelance technical recruiter or sourcing specialist to help us find a highly qualified Senior Performance Engineer. Your primary goal will be to use LinkedIn Recruiter to identify, engage, and deliver a shortlist of strong, vetted candidates who meet our strict technical and geographic requirements.

The Role You Will Be Sourcing For
You will be hunting for a Senior Performance Engineer. The successful candidate must meet the following criteria:

Core Expertise: Proven experience in system performance tuning and optimization.

Required Tools: Deep, hands-on experience with Datadog (setting up monitors, tracing, APM, and building dashboards for performance bottlenecks).

Location: Must be located in [Insert Specific Location/City/Country].

Bonus Skills: [Insert any other relevant tech stack details, e.g., AWS, Kubernetes, Java, Python, etc.]

Your Responsibilities

Utilize LinkedIn Recruiter (and other relevant platforms) to build a targeted pipeline of candidates.

Craft and send highly engaging outreach messages to passive candidates to generate interest in our role.

Conduct initial screening (via message or a short call) to verify their experience with Datadog, performance tuning, and their location.

Present a curated shortlist of [Insert Number, e.g., 5-8] interested and qualified candidates for our team to interview.

What We Are Looking For In You

Proven track record as a technical sourcer or recruiter, specifically placing senior-level software, DevOps, or performance engineers.

Active access to a LinkedIn Recruiter seat (or equivalent premium sourcing tools).

A solid understanding of technical terminology so you can accurately screen for Datadog and performance tuning capabilities.

Excellent written communication skills for high-conversion outreach.

How to Apply
Please submit your proposal and include:

A brief summary of your technical recruiting experience.

An example of a similar niche engineering role you have successfully sourced for.

A brief outline of the search string or strategy you might use to find candidates with Datadog and performance tuning experience in our target location.

Your estimated timeline to deliver the first batch of candidates.

Founding Product Engineer — Smart Kiosks, Global Startup

We're building a global B2B IoT + SaaS platform for smart vending and kiosks — hardware (RFID, controllers, cameras) plus software (backend, dashboards, driver apps, billing) in one product.
Founders across Australia + China with big Ambitions. We're hiring our first product engineer — a rare ground-floor opportunity with real ownership of your work, and room to grow with the company.

You'll:

Build product features end-to-end (frontend + backend)
Ship features that customers actually use
Contribute to product and UX decisions
Work directly with the founders and CTO

You bring:

Strong full-stack ability
Builder mindset — you ship
Product instincts — you care how things feel for the user
AI-tool fluency
Strong written and spoken English

Long-term remote contract → permanent founding-team role.

To apply: send 2–3 things you've built, and a line on why founding-team work fits you right now.

"I'm looking for an experienced FlutterFlow developer to build a consumer mobile app (iOS + Android) with a Supabase backend. The core feature is location-based alerts: the app needs to detect when a user enters specific geographic zones and send a push notification — critically, this must work even after the app has been fully closed by the user or terminated by the OS, not just while it's open or minimised (similar to fitness or delivery apps that alert you hours later from a locked phone).
The app also needs Firebase Cloud Messaging push notifications that arrive when the app is closed, and will go through Apple App Store and Google Play submission, including the background/always-on location permission review process.
I'm specifically looking for someone with proven experience in this exact combination — not just general Flutter/FlutterFlow work. Please include links to any live apps where you've implemented background location tracking that survives the app being fully closed, and let me know your day rate and availability.
Full project scope and brief will be shared with the selected developer."

Our backend runs Java Spring + Hibernate + PostgreSQL DB on an Ubuntu server.

We face issues on a server side periodically: CPU usage goes up to 100%, system CPU time rises as well while iowait stays the same. The issue lasts for a couple of days and then returns to the old normal levels.

From what we understand it's not long queries execution, it's not the backend itself. Also it's not periodical schedulers or backup routines. It seems like it's smth inside Postgre DB while we do not see anything special in DB logs.

P.S. If you manage to resolve this issue efficiently and fast we can establish long-term working relationships with other projects of ours.

We are looking for a specialist who has deep knowledge of how PostgreSQL works (especially in conjunction with Java Spring and Hibernate), has experience of optimization of interaction between the database and backend software.

• Describe your recent experience with similar projects

Chrome Extension Expert Needed – Fix 403/Blocked Requests While Manual Flow Works

Description

I have a Chrome Extension (Manifest V3) that automates actions on a web application.

Current issue:

* Manual browser flow works correctly.
* Extension requests intermittently fail with 403 responses.
* Response sometimes returns an HTML challenge page instead of expected JSON data.
* Browser session is authenticated and cookies are present.
* Need an expert to analyze request flow and identify why automated requests are being rejected while manual requests succeed.

Scope:

* Compare working manual requests vs extension-generated requests.
* Analyze headers, cookies, session handling, request timing, and authentication context.
* Review Manifest V3 service worker implementation.
* Identify missing request attributes or browser context differences.
* Implement a reliable fix and provide tested working solution.

Required Skills:

* Chrome Extension Development (Manifest V3)
* JavaScript
* Network Request Debugging
* DevTools / HAR Analysis
* Puppeteer (optional)
* Authentication & Session Management
* Browser Automation

Please apply only if you have previously debugged situations where:

* Manual browser actions work
* Automated/extension requests fail
* HTML challenge pages are returned instead of API JSON responses

When applying, briefly explain a similar issue you have solved before.

The project is ongoing. The DSpace 7.2 is up and running.
The task will be assigned based on the requirements during a month period.
Tasks may include menu and front page customization, search, permission, etc. and will be agreed with existing technical team.

Founding Product Engineer — Smart Kiosks, Global Startup

We're building a global B2B IoT + SaaS platform for smart vending and kiosks — hardware (RFID, controllers, cameras) plus software (backend, dashboards, driver apps, billing) in one product.
Founders across Australia + China with big Ambitions. We're hiring our first product engineer — a rare ground-floor opportunity with meaningful equity, real ownership of your work, and room to grow with the company.

You'll:

Build product features end-to-end (frontend + backend)
Ship features that customers actually use
Contribute to product and UX decisions
Work directly with the founders and CTO

You bring:

Strong full-stack ability
Builder mindset — you ship
Product instincts — you care how things feel for the user
AI-tool fluency
Strong written and spoken English

Long-term remote contract → permanent founding-team role + meaningful equity.

To apply: send 2–3 things you've built, and a line on why founding-team work fits you right now.

Project Title:
Development of a Specialized Text-to-Speech (TTS) Phonetic Dictionary and Lexicon for Singaporean English

Company Overview:
We are an innovative AI organization expanding our proprietary Voice AI capabilities. Our current system architecture is built on the Google Cloud Ecosystem (including Google AI Studio, Speech-to-Text, and Text-to-Speech Developer tools). We are now looking to hyper-localize our user experience by creating a highly accurate, custom pronunciation dictionary tailored specifically to the Singaporean market.

Project Scope & Objective:
We require a qualified Subject Matter Expert (SME) to design, build, and validate a comprehensive text-to-speech phonetic lexicon/dictionary for Singaporean English (SgE). This database will map localized vocabulary, loanwords, unique idioms, names, and structural expressions to their precise phonetic transcriptions—enabling our voice agent to sound authentically and naturally Singaporean.

The successful contractor will develop a master dictionary including:

Segmental Layer: Accurate phoneme mapping handling typical SgE vowel mergers (e.g., fleece/kit, dress/trap) and consonant structures.

Loanword Integration: Phonetic transcriptions of widespread substrate-derived loanwords (from Hokkien, Mandarin, Malay, and Tamil) commonly integrated into everyday Singaporean business and casual speech.

Suprasegmental/Prosodic Markers: Alignment with the syllable-timed rhythm and distinct intonational patterns characteristic of Singapore English.

Key Deliverables:
Phonetic Lexicon Database: A clean, machine-readable dataset (JSON, XML, or CSV format) containing words mapped to standardized phonetic alphabets accepted by modern TTS architectures (e.g., SAMPA, IPA, or Arpabet modified for SgE).

Grapheme-to-Phoneme (G2P) Ruleset: Documentation of structural linguistic rules to help the engine handle out-of-vocabulary (OOV) Singaporean terms seamlessly.

Integration Support: Collaborating briefly with our engineering team to ensure the lexical database uploads smoothly into our Google Cloud / Google AI Studio pipeline using custom voice tuning or Synthesis Markup Language (SSML) lexicons.

Required Qualifications & Certifications:
Applicants must possess formalized credentials in this domain. Please do not apply if you do not meet the following criteria:

Educational Certification: A Master’s Degree or Ph.D. in Linguistics, Phonetics, Computational Linguistics, or a closely related field.

Professional Expertise: Proven experience in lexicography, phonetic transcription, or building Lexicons specifically for speech synthesis (TTS) or automated speech recognition (ASR).

Localization Knowledge: Native or near-native familiarity with the linguistic nuances, phonology, and sociolinguistics of Singaporean English and Singlish.

Technical Familiarity: Understanding of speech technology frameworks and formatting data to be compatible with cloud speech architectures (experience with Google Cloud Speech tools is highly preferred).

• Please list any certifications related to this project
• Describe your recent experience with similar projects

Seeking a regular developer to work a few hours a week on managing server plugins, bugs, and other tasks for Minecraft servers hosted on Apex Hosting. The ideal candidate will have experience in Minecraft server management and be able to commit to a part-time schedule. Responsibilities include troubleshooting issues, updating plugins, and ensuring server stability.

We are looking for a talented and experienced Freelance App Developer to build a high-quality, user-friendly mobile application from scratch. The ideal candidate should have a strong portfolio of successfully launched apps and a good understanding of modern UI/UX principles.

Project Scope & Responsibilities:
Develop a fully functional mobile application for [mention platform: e.g., Android, iOS, or both using Flutter/React Native].

Implement core features including: [e.g., User Authentication, Payment Gateway Integration, Push Notifications, Real-time Chat, etc.].

Ensure smooth API integration with our backend services.

Optimize app performance, speed, and responsiveness.

Fix bugs and handle troubleshooting during the development phase.

Assist with publishing the app to the Google Play Store and/or Apple App Store.

Required Skills & Qualifications:
Proven experience as an App Developer (please share links to live apps in your proposal).

Proficiency in [mention tech stack: e.g., Flutter, React Native, Swift, Kotlin, Java, or Node.js].

Experience with database management (e.g., Firebase, MongoDB, PostgreSQL).

Familiarity with Git and version control.

Strong communication skills and ability to meet deadlines.

Project Details:
Project Type: [One-time project / Ongoing project]

Project Length: [e.g., 1 to 3 months]

Budget: [Specify your budget, e.g., $500 - $1,500 fixed price OR Hourly rate: $20 - $40/hr

We are seeking an experienced Senior Java Developer to join our team for a 6-month contract. The role involves working on a large-scale platform modernization initiative, focusing on improving system architecture and ensuring scalability. The ideal candidate will have a strong background in Core Java, Spring Framework, and Java, with experience in modernizing legacy systems. This is a part-time engagement with a medium project scale, offering an opportunity to contribute to a significant technology transformation.

• Describe your recent experience with similar projects
• Include a link to your GitHub profile and/or website
• What frameworks have you worked with?

I have a mobile app and backend for a truck parking utility that I have rapidly prototyped using AI vibe-coding. The frontend looks good, but the code architecture needs an expert to clean it up, refactor it into standard practices, and ensure it's secure. Over a 2.5 -month timeframe, I need a live Stripe webhook integrated to handle bundling logic (parking spot reservation + shower pass generation + a $15 food voucher barcode), followed by publishing both to the iOS and Android stores. My budget for this cleanup and launch phase is $800 fixed-price across milestones. Let me know if you have availability to audit the codebase and help me cross the finish line!"

Seeking a hands-on QA Engineer experienced in Manual Testing, Automation Testing, API Testing, AI Chat/Voice Agent Testing, and Performance Testing. Must have Selenium, Playwright, Java, Typescript, Postman, GitHub Actions and CI/CD experience. Remote long-term role.

I am facing a JasperReports issue with a large text field around 5000 characters. The field is set to stretch, but when text wraps due to word length or newline characters, some characters move to the next line/page and are not displayed at the end of the complete text. Need help fixing JRXML textField stretch/overflow behavior for PDF export and font settng etc. also required guidance on Jasper server capabiities

We are seeking an experienced developer to create a Minecraft SMP server with a unique theme. The server should be designed for a small group of players, focusing on survival and exploration. The ideal candidate will have experience in Minecraft server management and SMP mode, ensuring a seamless and engaging player experience. Responsibilities include setting up the server, configuring plugins, and optimizing performance for a smooth gameplay experience.

I’m looking for a freelancer to create a simple website for an event where guests can scan a QR code and upload photos they take during the event. The website should be mobile-friendly, easy to use, and include a shared gallery where all uploaded photos can be viewed.
The solution should be simple, reliable, and visually appealing. Please include examples of similar projects, your estimated timeline, and your proposed cost when applying. I’m open to suggestions on the best way to implement this functionality.

We are seeking a skilled freelancer to develop Part 1 of MasterFlow OS, a multi-tenant SaaS platform for the printing industry. The project involves building a cloud-based system with a user-friendly interface, integrating with existing systems, and ensuring scalability and security. The ideal candidate will have experience in software development and cloud computing, with a strong understanding of SaaS architecture.

• Required Skills: 5+ years .NET experience, SaaS experience, Azure experience, API development, SQL Server, GitHub workflow.
• Describe your SaaS experience; Explain tenant isolation; Describe Azure experience; Provide API examples; Share GitHub examples; Explain clean architecture approach.
• Describe your recent experience with similar projects
• Please list any certifications related to this project
• Include a link to your GitHub profile and/or website

Preferred Stack: Python, Java, Node.js
Open to AI coding tools(Claude, Codex...) if you can use it professionally.
Since AI coding tools are getting too smart, I don't need engineers who have extensive experience, but someone who knows fundamentals of software engineering.
Beside technical skills, communication would be the most high priority. American accent is REQUIRED.
Developers from Pakistan are preferred.
(Potential to full-time hire.)

Skills: Java, JavaScript, Python, Node.js, Web Development, Artificial Intelligence, Back End Development, ReactJS, Communications Technology

Hiring web developer who will pair program with me on zoom any day weekdays/weekends 9am-6pm eastern time on zoom the whole work duration (New York time). Java and react experience is preferred.

Thank you

I need help with constructing a trading zone automation program on S&P500 FUTURES using bracket orders. The program should be able to automatically place and manage trades based on predefined trading zones. The ideal candidate will have experience in trading zone automation and be able to deliver a reliable and efficient solution.

We are looking for an experienced Java developer to support the development and maintenance of reporting functionality within our system.
The role requires both strong programming skills and a solid understanding of how reporting systems work from a data and business logic perspective.

Responsibilities:
- Develop, maintain, and optimize reporting features using Java
- Design and implement report generation logic based on business requirements
- Integrate reports with existing data sources (e.g., databases, APIs)
- Implement filtering, sorting, and aggregation mechanisms
- Ensure data accuracy, consistency, and performance of report queries
- Collaborate with stakeholders to understand reporting needs and translate them into technical solutions
- Troubleshoot and resolve issues related to report generation and data discrepancies

Requirements:
- Strong experience in Java development
- Proven experience working with reporting systems (e.g., JasperReports, BIRT, or similar)
- Solid understanding of data structures, SQL, and data sourcing concepts
- Experience with filtering logic, parameters, and dynamic report generation
- Ability to analyze data flows and understand where and how data is sourced
- Familiarity with REST APIs and database integration
- Strong problem-solving skills and attention to detail

Nice to Have:
- Experience with hotel PMS, booking systems, or similar data-heavy platforms
- Knowledge of ETL processes or data pipelines
- Experience with performance optimization of large datasets

Project Type
- Ongoing work with milestones
- Potential long-term collaboration

• Can you show a reporting or dashboard project that you have done?
• Do you understand what we mean by pre-calculating all metrics and storing them efficiently in MongoDB?
• Are you familiar with the Gaussian (normal) distribution and standard deviations?
• Are you familiar with the CI/CD workflow? We are using GitLab as our repo.
• Which reporting tools or frameworks in Java have you used (e.g., JasperReports), and in what context?

We are seeking a technically proficient Back-End Developer to join our dynamic team, focusing on the development and maintenance of robust backend systems that are crucial for our operations in vendor management, customer order processing, product catalog management, sourcing coordination, and comprehensive business reporting within the manufacturing and distribution sector. As a Back-End Developer, you will play a crucial role in designing and implementing scalable and efficient services that connect our internal business operations with various external partners, including suppliers, logistics companies, sales platforms, and inventory management systems. Your expertise will be vital in optimizing communication channels across different departments, which will contribute to enhancing operational efficiency and providing accurate and timely business data that empowers effective decision-making on a day-to-day basis. Collaboration will be at the core of your role, as you will work closely with product managers to understand their needs, operations teams to grasp workflow requirements, frontend developers to ensure cohesive integrations, sourcing specialists to align on product offerings, and various business stakeholders to develop and refine solutions. This collaborative approach will enable you to create and implement innovative solutions that enhance workflow automation, improve system reliability, and support the company's growth and responsiveness to market demands. The ideal candidate for this position is not just a skilled programmer, but also someone who enjoys tackling complex business challenges through technology. You will have the opportunity to build systems that have a direct and measurable impact on the success of our operations, allowing you to see the tangible results of your work in our day-to-day activities and strategic initiatives.

Responsibilities for this position include:

- Building secure and scalable APIs that support both internal and customer-facing applications.

- Developing backend workflows that automate order processing, vendor onboarding, and procurement activities.

- Creating services that manage product information, pricing updates, production status tracking, and shipment coordination.

- Supporting integrations across business applications, supplier systems, logistics providers, and e-commerce platforms.

- Implementing validation, auditing, and business rules to ensure data accuracy across operational systems.

- Designing and optimizing relational database structures for operational applications.

- Building reporting APIs and backend services that support operational dashboards and management reporting.

- Monitoring application performance and resolving bottlenecks that affect system responsiveness.

- Implementing logging, monitoring, and error-handling processes to improve reliability and troubleshooting.

- Assisting with deployment activities, system upgrades, and backend maintenance initiatives.

- Collaborating with frontend developers to support efficient data delivery and enhance application performance.

- Contributing to code reviews, testing initiatives, and the establishment of development best practices.

- Identifying opportunities to automate repetitive tasks and enhance operational workflows.

- Documenting backend services, integrations, and technical processes for future maintenance and scalability.