Find Linux System Administration Projects

Email Coordinator AI Agent
A phased build that takes the Email Coordinator's triage, routing, lead handling and follow-up tracking from human-operated to agent-operated, with people kept exactly where the risk is.

Overview
We are looking for an experienced DevOps or infrastructure specialist to help deploy a production-ready Laravel application on a Linux VPS. This is a targeted task to establish a solid foundation, automate the deployment workflow, and ensure the server and database are configured securely for production traffic.

Scope of Work

* VPS Provisioning & Web Server Setup: Configure a fresh Linux server with Nginx, PHP-FPM, and Redis. Secure the server with a UFW firewall and basic SSH hardening.
* Database Setup: Install and configure the production database (MySQL or PostgreSQL), optimize basic performance settings, and restrict external access.
* CI/CD Pipeline Construction: Build an automated pipeline (e.g., GitHub Actions, GitLab CI) integrated with a deployment tool (like Deployer or Envoy) to enable reliable, zero-downtime deployments.
* Laravel Production Readiness:
* Secure the `.env` configuration and restrict access to the project root by ensuring Nginx routes traffic exclusively through the `public/` directory.
* Set up and monitor Laravel queue workers using Supervisor.
* Configure cron jobs for Laravel's task scheduling.
* Execute application optimizations (route, config, view, and event caching) for production performance.


* SSL Implementation: Secure the domain with a free Let's Encrypt/Certbot SSL certificate.

Deliverables

* A fully functioning, secure production environment on the provided VPS.
* An automated CI/CD pipeline where code pushed to the deployment branch triggers a successful, zero-downtime rollout.
* A brief handover document detailing server configuration paths, database credentials, and instructions for managing the queue workers and SSL renewals.

Requirements

* Proven experience deploying Laravel applications to self-managed VPS environments.
* Deep knowledge of Linux server administration, Nginx, and secure database management.
* Hands-on experience with modern CI/CD workflows and deployment scripts.

To Apply, Please Provide:

1. A brief summary of your approach to handling zero-downtime deployments.
2. The CI/CD tools you prefer to use for this type of task.
3. Your estimated timeline and fixed-price quote for completion.

We are looking for an experienced Server / IT Infrastructure professional to independently review two proposed server specifications and advise us which option is most suitable for our business.

We currently operate a server environment supporting approximately 500 websites, together with email hosting and databases. We are reviewing our server infrastructure to ensure that we have the right balance of:

Performance and reliability
Data protection and redundancy
Backup and disaster recovery
Storage capacity and future growth
Cost effectiveness

We have received two different proposed server specifications, with different hardware, storage and RAID configurations. As we are not server specialists, we would like an independent expert to review both proposals and explain which solution is most appropriate for our actual requirements.

What we need from you:

Review both server specifications in detail.
Compare the processors, RAM, storage, NVMe/SSD/HDD configuration, RAID setup and other relevant hardware.
Assess whether either specification is over- or under-powered for our requirements.
Review the proposed backup/storage approach and identify any weaknesses.
Advise which of the two options you would recommend and why.
Identify any components you would change to improve reliability or reduce unnecessary cost.
Advise whether a separate NAS/backup server would be appropriate and what specification would be sufficient.
Explain your recommendation in clear, non-technical language so that we can make an informed purchasing decision.

We are not looking for someone to sell us hardware. We are looking for independent professional advice before making a purchase.

This should initially be a relatively small consultancy task. We will provide both specifications and further information about our current server/storage usage to the selected freelancer.

Ideal experience:

Server infrastructure / systems administration
Dell, HPE or similar enterprise server hardware
RAID and enterprise storage
NAS and backup solutions
Web/email hosting environments
Disaster recovery and backup planning

When applying, please briefly explain your experience with server infrastructure and RAID/storage design and confirm that you are comfortable providing an independent comparison rather than supplying the hardware.

We operate an automation agent that drives SAP GUI for Windows (thick client) to execute business transactions on behalf of our users. The current implementation is single-threaded: it runs one screen at a time, takes control of the physical mouse and keyboard, and blocks the user's desktop while it works.

We are re-architecting it into a parallel, unattended, non-interfering system. We need an engineer who has built this before and knows where the landmines are — session limits, scripting security policy, modal-dialog handling, Windows session licensing — rather than someone who will discover them on our timeline.

What you will build
Migrate from screen-level automation to the SAP GUI Scripting API. Replace synthetic mouse/keyboard input with the COM object model (GuiApplication → GuiConnection → GuiSession) so commands dispatch directly to the GUI and never steal focus from the user.
Implement multi-session parallelism. Use CreateSession() to run several SAP windows concurrently under a single connection, respecting rdisp/max_alt_modes limits. Design the worker pool to degrade gracefully when the session ceiling is reached.
Design the isolation layer. Evaluate and implement worker isolation so agent activity is invisible to the end user. Candidate approaches include Hyper-V VMs, Windows Server RDS, or Azure Virtual Desktop multi-session. You will be expected to produce a written recommendation covering licensing implications, not just a technical preference.
Build a robust orchestration and error layer. Session lifecycle management, unexpected modal-dialog handling, transaction retry and idempotency, structured logging, and clean recovery from GUI hangs or dropped connections. The COM model is STA and not thread-safe — your design must reflect that.
Identify and migrate transactions to RFC/BAPI where possible. Assess which processes can bypass the GUI entirely via SAP Connector for .NET (NCo). We expect a meaningful share of current UI automation to be replaceable with direct, thread-safe calls.
Document and hand over. Architecture documentation, runbooks, Basis-team configuration requirements, and a deployment guide. Knowledge transfer to our internal team is part of the engagement, not an afterthought.

Like in title,
This would require some experienced Django developer with some competences in react frontend.
Django cookies cutter app is hosted on Ubuntu server and is dockerized.
Some additional tasks may appear.

STRICT RULES - READ BEFORE BIDDING
. ZERO-TOLERANCE HARDWARE RULE:
DO NOT BID if you do not have direct, hands-on experience with ALL of these specific devices:

Cudy P2 5G Router

DrayTek Vigor 2915 Router

Yeastar S20 PBX
We are a live production business, NOT a testing ground or a network engineering academy. If you do not know these exact models inside out, do not waste our time. We will not teach you how our network works.

2. THE CORE AUTOMATION GOAL (MANDATORY):
We demand a 100% seamless, automated experience for the end-user. Moving in and out of the office must require ZERO manual network adjustments.

Smart VPN (Always-On): It must run 24/7. When a user walks into the KSA office and connects to the local Wi-Fi, the routing must automatically prioritize local traffic without conflicts. When outside on 5G, it must route to the remote sites smoothly. No manual ON/OFF switching.

Linkus App: It must auto-switch instantly. It must use the Local PBX IP when inside the office, and automatically switch to the DDNS endpoint when outside, bypassing the VPN completely to avoid latency.

3. STRICTLY ANYDESK OR ULTRAVIEWER ONLY:
ALL work MUST be done remotely via AnyDesk or UltraViewer. No direct access, VPN credentials, SSH keys, or passwords will be handed over.

4. MANDATORY BACKUPS:
You must take full configuration backups of all devices to my local PC before making a single change.

5. NO TIME-WASTING:
Do NOT message me asking "What is the problem?" or "What is your budget?". The scope is below. Your bid is your final price. Violating this results in an immediate BLOCK.

--- PROJECT DETAILS & TECHNICAL SCOPE ---

We need an expert to troubleshoot and optimize our site-to-site network and VoIP infrastructure between Saudi Arabia (5G behind CGNAT) and Egypt (Fiber).

Current Infrastructure:

KSA Site: DrayTek Vigor 2915 router cascaded behind a Cudy P2 5G router.

Egypt Site: Yeastar S20 PBX on stable Fiber (NO modifications needed here).

Cloud VPS (Germany): Used as a relay to bypass the KSA 5G CGNAT. It runs Docker, Caddy (reverse proxy) with a dynamic DNS setup.

Tunnels: WireGuard is ALREADY SET UP and working perfectly on the cloud server for the site-to-site link. Remote users currently use DrayTek SSL VPN.

The Issues to Fix via AnyDesk / UltraViewer:

Port 443 Conflict: The previous developer mapped port 443 on the VPS (via Caddy) directly to the DrayTek Web GUI. This conflicts with DrayTek SSL VPN. You must resolve this and forward the necessary Yeastar S20 PBX ports directly through the VPS so users can register Linkus natively via the DDNS hostname.

Smart VPN (Always-On Split Tunnel): Reconfigure the DrayTek remote dial-in VPN to IPsec/IKEv2. You MUST configure pure Split-Tunneling to route BOTH the remote Egypt subnets AND the local KSA subnets correctly to achieve the seamless transition mentioned above.

VoIP Instability: Fix the random drops and choppy audio on the Linkus app. Configure and enforce lightweight codecs (e.g., Opus) on the Yeastar S20.

Minor WireGuard Tweaks: Verify/adjust MTU/MSS clamping to prevent packet fragmentation over 5G, and ensure "PersistentKeepalive" is active.

General Check: Ensure the Cudy P2 5G router has DMZ pointing to the DrayTek to avoid Double NAT, and verify SIP ALG is disabled across all routers.

Need someone to build a Go High Level workflow for a follow-up sales sequence, including email, SMS, and manual call steps. Also need whisper setup when someone makes a sales request. Use hosted messaging to send texts directly from a business phone number in Quo, and ensure replies go to our number as well.

trigger new sales request to call connecting me and then to the lead once I'm on the line. With whisper saying lead source, square footage, and desired service.

https://chatgpt.com/s/t_6a9d06d1c9c08191bed4d0b0417e331f

Also need task flow management system in ghl, sales pipeline created, and a few current issues fixed with lead creation triggers. See attached.

Overview

We are a digital marketing agency running a Plesk-based hosting server for client websites. We have confirmed a root-level compromise: a setuid-root backdoor binary was planted on the server, and attacker artefacts are present across the large majority of vhosts on the box. The backdoor was installed while our team was already remediating what we initially believed was a single-site WordPress infection.

We are engaging separately on the full rebuild. This engagement is containment only. We need an experienced hand for the next 24 to 48 hours to stabilise the situation correctly, preserve evidence properly, and stop ongoing harm, so that we do not destroy our forensic position or make the rebuild harder through panicked action.

This is a live incident. We need someone who has done this before, not someone learning on our server.

Scope of work (fixed price, defined deliverables)
Evidence preservation. Coordinate a full disk snapshot with the hosting provider before any other action. Copy system and vhost logs to external storage before rotation or attacker cleanup. Document a chain of custody we can hand to a forensics provider later.
Stop outbound abuse. A bulk mailer is present in large numbers across the server and the IP is at risk of blocklisting. Halt outbound spam in a way that preserves evidence and, where possible, keeps legitimate client mail flowing. Report on what was queued and sent.
Backdoor assessment (identification, not reverse engineering). Locate and document privilege escalation artefacts and persistence mechanisms present on the box. Identify scheduled tasks, services, modified binaries and accounts used for persistence. We need an inventory, not a malware analysis report.
Secure administrative access. Remote shell access to the server is currently failing server-wide for reasons not yet explained and not configured by us. Establish a trustworthy administrative access path, working with the provider's rescue mode or console if required.
Credential exposure inventory. Produce a prioritised list of every credential class exposed by this compromise (control panel, databases, mail, management tooling, API tokens) so we can rotate methodically from clean machines.
Written handover. A concise report covering what you did, what you found, what remains dangerous, and your recommended sequence for the rebuild. This will be read by both technical and non-technical stakeholders.



Required experience
Demonstrable experience containing root-level Linux compromises, not just WordPress malware cleanups
Strong Plesk administration, including working effectively when the panel and shell access are degraded
Comfortable with provider rescue mode and out-of-band console access (OVH experience a plus)
Postfix and mail abuse containment
Sound judgement on evidence preservation. We need someone who understands why deleting the malware first is the wrong move
Clear written English. Part of the deliverable is a report our management will read

What we provide

Root-level access to the server and control panel
Hosting provider account access as required
An existing indicators-of-compromise report for the originally affected site, plus the results of a server-wide signature sweep we have already run
A direct line to a decision maker for the duration, including out of hours

Terms

Fixed price, with the six deliverables above as the acceptance criteria

Start: immediately. We will review proposals as they arrive rather than waiting for a closing date

Duration: 24 to 48 hours

NDA required before any server or client detail is shared

Please quote for the scope as written. If you believe the scope is wrong, tell us why in your proposal, we would rather hear that now than mid-engagement

I need a Discord expert to create and configure a server for my trading business. The work includes setting up channels, roles, permissions, and organizing the server structure to support community interaction and trading discussions. I’m looking for someone who can build a clean, functional server and help ensure it is easy to use for members. Please share relevant experience with Discord server creation and any examples of similar projects.

Looking for a remote technical support specialist to perform testing, provide technical support, and help with virtual customer demonstrations.

Required:
- Knowledge of both English and Spanish
- Experience with Active Directory, domains, and GPOs
- Experience with Linux (RedHat and Ubuntu preferred)
- Experience with hypervisors (VirtualBox, VMware, Hyper-V)
- Has hardware and resources available to perform thorough testing of our software
- Good communication skills, both written and verbal
- Available during business hours and some evening hours

Preferred:
- Besides English and Spanish, knowledge of other languages would be very helpful
- Knowledge of ADFS would be helpful

Linode DevOps / Linux Security Expert – Suspended Server & Malware Issue – 3–6 Hour Job

We are looking for an experienced Linux/DevOps security specialist to diagnose and resolve a security issue on an existing Linode server.

Linode suspended/restricted the server after detecting suspected malicious activity, possible malware, and/or unauthorized outbound network activity.

Our immediate goal is to identify and eliminate the source of the problem, properly secure the server, and provide the remediation information required by Linode so we can request that the server/account be reinstated.

The application is built with Laravel/Vue and hosted on Linode.

Estimated Time: 3–6 Hours

This is intended to be a focused troubleshooting and remediation project. We need someone who can start quickly and has previous experience handling compromised Linux servers.

SCOPE OF WORK

1. Diagnose the Issue

Review active processes and services

Review network traffic and open ports

Identify suspicious outbound activity

Determine what triggered Linode's security action

2. Malware / Compromise Investigation

Scan the server for malware and compromised files

Check suspicious processes, cron jobs, users, SSH keys, scripts, and services

Identify how the server may have been compromised

Remove malicious or unauthorized components

3. Secure the Server

Patch/update the Linux server where appropriate

Close unnecessary ports

Configure/review firewall rules

Secure SSH access

Rotate compromised credentials or keys if necessary

Address the vulnerability that caused the issue

4. Verify the Fix

Confirm malicious or suspicious outbound traffic has stopped

Confirm the application is functioning properly

Verify the server has been appropriately secured

5. Linode Reinstatement Support

Provide a short written remediation report that we can submit to Linode, including:

Root cause or suspected root cause

Malicious activity discovered

Files, processes, or accounts removed or corrected

Security vulnerabilities addressed

Security measures implemented

Steps taken to prevent recurrence

The goal is to satisfy Linode's remediation requirements and have the server/account reinstated.

REQUIRED EXPERIENCE

Linux System Administration

DevOps

Linode

Cybersecurity

Server Security

Malware Detection and Removal

Network Security

Firewall Configuration

Ubuntu/Linux

NGINX

SSH Security

WHEN APPLYING

Please answer the following:

1. Have you previously recovered a Linux/Linode server that was suspended or restricted because of malware or suspicious network activity?

2. Have you helped a client provide remediation information to a hosting provider to restore service?

3. Can you start immediately or within the next 24 hours?

4. Can the initial diagnosis and remediation reasonably be completed within 3–6 hours?

5. Briefly explain how you would approach this issue.

This is not primarily a website development project. We specifically need a Linux/DevOps security engineer experienced with compromised servers, malware remediation, network security, and hosting-provider reinstatement.

Looking for a mid-level system administrator based in the United States to help administer and maintain a mixed Linux and virtualization environment. This is hands-on operational work, not a C-level architecture engagement and not an entry-level help-desk role.
You should already be comfortable living in a terminal on Linux servers and handling day-to-day administration without needing a playbook for every task. You should also already use AI coding/ops tools in real work — not as a novelty, and not as a replacement for knowing the systems.
What you will work on

Linux server administration from the command line (installs, services, users, networking, troubleshooting, logs, package management)
IP-based storage (iSCSI and similar SAN/NAS connectivity, multipath, mounting, basic performance/capacity issues)
Monitoring and log aggregation with Zabbix and Graylog
Netgate pfSense firewalls (rules, NAT, VPNs, interfaces, basic HA/troubleshooting)
Using AI tools to draft, review, and deploy operational automation: scripts, config changes, runbooks, log analysis, and repeatable admin tasks
Occasional Microsoft Hyper-V work is a plus (VMs, virtual switches, storage, snapshots, live migration basics)

AI tools we care about
Practical experience with at least one of:

Anthropic Claude / Claude Code
xAI Grok (including Grok Build-style coding/ops workflows)
OpenAI ChatGPT

The point is using these to assist real system work — generate and tighten bash, parse logs, propose configs, document changes — then verify everything yourself before it touches production.
Who this is for

Intermediate experience: several years administering production Linux servers, not “I took a Linux class” and not “I only design enterprise platforms for Fortune 100.”
You can work independently, document what you change, and escalate clearly when something is outside scope.
You live in the domestic United States (required).

Must-haves

Strong Linux command-line administration experience
Experience with IP-based storage
Familiarity with Zabbix and Graylog
Experience with Netgate pfSense
Hands-on use of Claude, Grok, and/or ChatGPT to help automate or operate systems
US residency

Nice to have

Microsoft Hyper-V
Basic scripting (bash) for repeatable admin tasks
Comfort with Windows Server environments that sit next to Linux
Experience wiring AI tools into ops workflows (CLI agents, MCP-style tool use, script generation with review)

What this is not

Not looking for boutique “professional admins for hire” shops or senior consultants who only do architecture reviews.
Not looking for juniors who need training on basic Linux admin, storage, or firewalls.
Not looking for people whose only AI experience is asking ChatGPT generic questions.

If this matches your background, send a short note covering:

Years of hands-on Linux server admin
Storage / iSCSI experience
Zabbix, Graylog, and pfSense exposure
Which AI platforms you actually use for sysadmin work (Claude / Claude Code, Grok / Grok Build, ChatGPT) and one concrete example
Confirmation you are based in the US
Whether you have Hyper-V experience

Hourly or part-time ongoing work is preferred. Start with a small scoped task so we can see fit before expanding.

I need help troubleshooting and resolving issues with an EXE file. The file is not working as expected, and I’m looking for someone who can identify the problem, test the file, and make the necessary fixes. Please share your experience with similar issues and your approach to debugging and resolving EXE-related problems. I’m looking for a reliable freelancer who can communicate clearly and deliver a working solution.

I need an expert to urgently diagnose and fix a chat automation issue that is not delivering as expected. The work includes reviewing the current setup, identifying the root cause, and implementing a reliable solution. Please share relevant experience with similar automation problems and your approach to troubleshooting and resolving them quickly.

We are looking for an experienced AWS Cloud / Security Engineer to review our existing AWS infrastructure before we provide access to additional developers.
The goal is to make sure our AWS environment is properly secured, monitored, and structured so that developer access can be provided safely.
The company works with a HIPAA-regulated client, so the review and recommendations should follow AWS security best practices and support HIPAA-related requirements.
The engagement would include:
Review of the current AWS infrastructure and account setup
Review of IAM users, roles, permissions, and access policies
Recommend an appropriate access model for developers using least-privilege principles
Identify major security risks or misconfigurations
Review logging and audit capabilities
Configure or recommend monitoring and alerting using services such as:
CloudTrail
CloudWatch
AWS Config
GuardDuty
Security Hub
EventBridge / SNS alerts
Review encryption, KMS usage, S3 security, and sensitive data access
Review backup and recovery configuration where applicable
Recommend changes required to better support a HIPAA-aligned AWS environment
Provide a short list of critical actions that should be completed before developer access is granted
This is primarily a review, consultation, and monitoring/security setup engagement, not a large infrastructure migration project.
We are looking for someone with hands-on experience with:
AWS security and IAM
Production AWS infrastructure
Cloud monitoring and auditing
HIPAA workloads or other regulated environments
AWS security best practices and least-privilege access
Please briefly describe any similar AWS security, compliance, or infrastructure review work you have completed.

Need someone to build a Go High Level workflow for a follow-up sales sequence, including email, SMS, and manual call steps. Also need whisper setup when someone makes a sales request. Use hosted messaging to send texts directly from a business phone number in Quo, and ensure replies go to our number as well.

We need help improving our Bitbucket setup by implementing strong best practices for code management, collaboration, and security. The work includes reviewing our current workflows, recommending improvements, and helping configure Bitbucket to support better team processes. You should be able to assess our current setup, identify gaps, and guide us toward a more efficient and secure development environment.

Please do not respond to this job post unless you have at least 10 ratings of 10.

I have a number of websites, a few with emails that need to be migrated from AWS EC2 server instance to a shared hosting account with NameCheap. I need an administration that can zip of files and databases and then from the new shared hosting server, download those files (From old server to new server) and then help make sure cloudflare and DNS are setup properly so everything is working. I've done this myself with a few sites, but I need someone to take over and then maintain whenever needed in the future.

I'm looking for someone experienced with all these things. This will be a small project, but over time, I'm looking for a long and mutually beneficial relationship with a sysAdmin familiar with all these things.

Also, I prefer someone who is also a PHP/MySQL/WordPress coder/expert/designer so our relationship can expand over time.

I need quotes for a freelancer to set up a TP-Link Omada Cloud software instance on a VPS or dedicated server, secure the server, and provide guidance on where to set up backups. The work includes installing and configuring the software, ensuring the environment is properly secured, and offering clear recommendations for backup locations and procedures. Please include your approach, timeline, and any relevant experience with similar server setups.

We are seeking an experienced ecommerce specialist developer to design configure the ideal freelancer must have proven hands on experience building modern high converting stores on Salla tailored for the saudi arabian (KSA) GCC market.and fully launch an online store on the Salla (سلة) platform.

We are looking for an experienced AWS / DevOps engineer to diagnose and fix a production issue affecting an existing SaaS platform.

The frontend is loading normally, but API requests are returning:

503 Service Unavailable

Chrome Developer Tools shows requests such as:

/api/v1/user/me

returning 503, with the response header:

Server: awselb/2.0

Users are currently unable to log in properly, and the forgot-password function is also failing.

Our current setup includes:

AWS
AWS Elastic Load Balancer
Cloudflare
Resend for transactional emails
Existing backend/API

We need someone to diagnose the cause of the AWS 503 error, inspect the Load Balancer and Target Groups, check backend service/container/server health, review health checks and CloudWatch logs, inspect ECS/EC2 if relevant, confirm Cloudflare is not contributing to the issue, and restore login and forgot-password functionality.

This is a live production environment, so we need someone experienced with troubleshooting production AWS systems and making careful changes.

Required experience:
AWS, DevOps, AWS ELB/ALB, ECS, EC2, Target Groups, CloudWatch, Cloudflare, Linux, backend APIs.

When applying, please briefly explain:

What can cause an AWS Load Balancer to return a 503
Whether you have fixed similar issues before
Your availability to start

Please first diagnose the issue and identify the root cause before making major infrastructure changes. Initial work should be limited to a few hours unless further work is approved.

I need a tutor to help me set up and use Chat GPT and Claude. The ideal freelancer should be able to guide me through the process step by step, answer my questions, and help me understand how to use these tools effectively. Please share your experience with AI tools and your approach to teaching beginners.

Need a developer to create basic ESP32 code for WiFi and web server connectivity. The work includes setting up a simple web server, handling basic HTTP requests, and ensuring reliable network communication. This is a small, focused project for someone who can deliver clean, functional code quickly. Please share relevant experience with ESP32 and similar embedded projects.

Please share:
1. A short example of similar ESP32 networking code you've written
2. Your estimated timeline for this task
3. Any clarifying questions about the requirements

We are looking to try out two different msp/rmm (datto & super ops). We need you to setup using your company and add us to the 14 day trial so we can test. We will pay

I run a small law office with a self-hosted n8n instance for internal workflow automation. Looking for someone to do infrastructure work on it, starting with one small fixed-price task and roughly 20-30 hours to follow if it goes well.

Environment: Hetzner Cloud VPS, Ubuntu 24.04. Two Docker containers - n8n and Caddy - defined in a docker-compose file. n8n is currently published on 0.0.0.0:5678. Caddy runs as a reverse proxy.

The task: A Caddy configuration package already exists - Caddyfile, revised compose file, and a written runbook. It has never been applied. Apply it, rebind n8n to localhost, close 5678 with ufw, and confirm from outside the box that the port is unreachable and the editor is no longer served publicly. About ten inbound webhook endpoints must keep working; the runbook lists them and includes a verification script.

This is applying an existing config, not designing one.

Deliverables: the change applied and working, verification performed from outside the server rather than on it, and written documentation of what was actually done. The documentation matters as much as the change.

Scope: Infrastructure only - server, Docker, n8n configuration, monitoring. No access to client files or case data; that boundary is firm and covered by a confidentiality agreement signed before access. Access is a named sudo account, key-only, created for the task and removed after.

Follow-on work if this goes well: monitoring setup, version control on existing modules, a backup and restore drill, TLS and systemd work, and several small deployments that are built but never installed. Include your hourly rate for that.

To apply, answer two questions: (1) How would you verify the port is actually closed? (2) What would you check before closing it? I'll skip proposals that don't answer both.

We are seeking an experienced database administrator to troubleshoot and resolve issues with a broken MySQL cluster. The ideal candidate should have a strong background in database management and cluster configurations. You will be responsible for diagnosing problems, implementing solutions, and ensuring the stability of the cluster. Effective communication skills and a methodical approach are essential. If you have a proven track record in MySQL cluster troubleshooting, we want to hear from you!

Support for eugamehost, responding to tickets related to Linux and Windows VMs, and providing game server support for titles like Rust, Minecraft, FiveM, Ark, Conan Exiles, DayZ, and many other popular titles. The role involves troubleshooting server issues, assisting with configuration, and ensuring smooth operation for clients. Ideal candidates should be comfortable handling technical support requests and communicating clearly with users.

We need help resolving an issue with our Zimbra email server where incoming emails are not being received. The problem appears to be urgent, and we are looking for someone with hands-on experience to diagnose the issue, identify the root cause, and implement a working fix. Please be available to start quickly and communicate clearly throughout the troubleshooting process. Experience with similar email server issues is strongly preferred.

We need a freelancer to set up and configure a Discord server for a gaming community. The work includes organizing channels, setting up roles and permissions, creating a welcoming onboarding experience, and ensuring the server is easy to navigate. You should also help establish basic moderation workflows and provide guidance on best practices for community management. This is a small, short-term project for someone who can deliver a clean, functional server setup quickly.

We’re looking for an Email Deliverability Expert to audit and fix our email infrastructure. Our emails are not consistently reaching the inbox, and we need someone who can identify the technical cause rather than simply changing campaign settings.

The main issues we need help with include spam placement, inconsistent delivery, bounce/rejection errors, authentication failures, and potentially incorrect or conflicting DNS records.

You will be responsible for:
* Auditing SPF, DKIM, DMARC, MX, CNAME and TXT records
* Checking SPF alignment and SPF lookup limits
* Verifying DKIM selectors and authentication
* Checking DMARC alignment and policy configuration
* Reviewing MX records and mail routing
* Checking rDNS/PTR and SMTP configuration where applicable
* Diagnosing SMTP, bounce and delivery errors
* Reviewing domain and sender reputation
* Investigating poor inbox placement and spam filtering
* Auditing Google Workspace and/or Microsoft 365 mailboxes
* Reviewing cold email sending infrastructure and campaign configuration
* Identifying problems with multiple sending sources or domains
* Recommending the correct warm-up and sending strategy
* Performing inbox placement testing after the fixes
* Providing a clear report of what was wrong and what was changed

Our current setup may involve Google Workspace, Microsoft 365, Instantly, Smartlead and third-party email infrastructure. Experience with these platforms is strongly preferred.

We are looking for someone who understands email deliverability from the infrastructure and receiving-server perspective. Simply configuring SPF, DKIM and DMARC is not enough. You should be able to investigate why authentication is technically passing but emails are still being filtered, rejected or delivered inconsistently.

To apply, please explain how you would diagnose a domain where SPF, DKIM and DMARC are configured correctly but emails are still landing in spam.

This will start as a technical audit and troubleshooting project, with the possibility of ongoing deliverability monitoring and infrastructure management if the initial work goes well.

::NO AGENCIES::
::DO NOT MESSAGE US OUTSIDE OF UPWORK::

We are an iOS app with a video-based onboarding flow, subscription model, and custom video player. We are migrating our paywall and onboarding flow management to Superwall. We need an experienced iOS developer to install and configure the Superwall SDK.

The Problem

Superwall is not yet integrated into our iOS app. We need the SDK installed, configured, and ready to present our first paywall placement.

Scope of Work

Install Superwall SDK via Swift Package Manager or CocoaPods

Configure the SDK in the app's lifecycle (AppDelegate or SwiftUI App init) with the correct API key

Set up a test placement and confirm that a paywall presents correctly

Ensure basic delegate methods for purchase callbacks are implemented

Important

Our app is video-based with a custom video player and video processing pipeline. Experience with video-heavy apps is strongly preferred to ensure the installation does not interfere with video playback, AVFoundation, or media processing.

We have existing in-app purchases and subscriptions. The integration must work with our existing StoreKit setup.

Deliverables

A working Superwall SDK integration that can present a test paywall

A brief explanation of what was installed and how to test it

Tech Stack

iOS (SwiftUI)

StoreKit for In-App Purchases

Superwall SDK

AVFoundation for video playback

To Apply

Please share your experience with Superwall, iOS SDK installation, and any work on video-based apps.

Why Video Experience Matters
Why It's Important What Could Go Wrong
Video playback and paywalls often conflict in the view hierarchy The paywall may not display on top of the video player
AVFoundation and Superwall may have conflicting lifecycle events Video playback could pause unexpectedly or fail to resume
Memory management is critical in video-heavy apps The paywall could cause memory pressure and crashes
Your video pipeline requires careful integration The SDK could interfere with your custom player