Hire the Best Systems Developers
Buenos Aires, Argentina
Most game projects don't fail because of missing features. They fail because the systems underneath weren't built to scale. I build the systems that hold. I'm Technical Director at Override Systems. I've led the architecture on shipped PC, console, and mobile titles — not just features, but the data flow, authority models, and structural decisions that determine whether a project survives production. What I Do Gameplay & Combat: combat flow, player mechanics, ability systems, interaction models Data-Oriented Architecture: custom ECS, UE5 Mass Entity, performance-critical pipelines Multiplayer & Networking: authoritative replication, GAS, Steam/Edgegap dedicated server backend AI Systems: behavior trees, decision logic, pathfinding, simulation Tooling: editor tooling, configuration systems, designer-facing pipelines Shipped Work Lead & Architect — Grow Empire: Rome (Unity, mobile, 10M+ players) Lead & Architect — Toxic Crusaders (Unity, PC/Console) Lead & Architect — Mythic Legions (Unity, PC) Built Clockwork — custom archetype-based ECS in C# for high-performance simulation How I Work Architecture first. I ask about data flow and authority before writing a line of code. I lead small focused teams, write the hard systems myself, and flag problems early. I don't hide complexity behind magic frameworks. If you have a multiplayer or systems-heavy project and need someone to own the technical direction — send me the scope.
- C++
- C#
- Artificial Intelligence
- Game Development
- AWS Systems Manager
- Game Design
- Unity
- Mobile Game
- Unreal Engine
Lahore, Pakistan
If you're looking for a fast, experienced, reliable, and practical developer to build your project, you're in the right place. I specialize in completing challenging projects and designing highly customized, secure software architectures from the ground up. I'm Expert in 30+ Programming Languages and hundreds of Technologies in my 15+ years of experience and have an impressive more than 80% client rehire rate. Impressive Success Stories: A browser project abandoned after $15,000 and 3 months. I delivered it in 3 weeks. Another left incomplete after $30,000 and 6 months. I started from 0 and shipped the same in one week. A mobile app stuck for 2 months. Fixed in 4 days. which was 20-25 times faster then previous developers and companies. Are you ready to get impressed as well? I focus on delivering solutions significantly faster than most developers while maintaining high standards of quality, security, and long-term maintainability, as well as providing after-sales support and making sure my clients have all source code, logins and some documentation, so if needed they can modify it easily themselves, and my work on deep browser modifications, anti-fingerprint, LLM and Web3 can speak mountains for itself. My Technical Track Record: Anonymous Anti-Detect Browser: Engineered specialized Chromium browsers from the source code, specifically hardened to bypass advanced anti-bot and device fingerprinting systems including the most advanced security and anti-bot systems. DemoStory Browser: Developed sophisticated session separation architecture to ensure 100% isolated environments, bypassing hardware-level restrictions. Total Security Browser: The Giant company also trusted me with development of their security browser. Privacy & Web3 Customization: Developed the Max Browser (complete block-out of big tech monitoring and data brokers) and in GTX and several browsers integrated IPFS protocols with custom URL schemes (gtx://, orbiti://) for decentralized ecosystems. I have developed 30+ Chromium browsers, including: Total Security Browser, Symphony Browser, Anonymous anti-fingerprint browser, Web3 Browser, Hassane Fake Camera Browser with bypass-anti-bot technology (privately distributed) Epic Browser Kahf Browser CEF transparency (company's internal) Max browser GTX browser Egon browser Ajna Browser BrowseWeb3 / BW3 Orbiti browser Minego browser Demostory browser True browser Sonmit browser Asil browser Halalz browser (for muslims) XFII browser Browser for company's internal support agents A custom hardware browser for a company's custom made tablets with limits on what users can do on it & OS Development including: Eye Tracking for Android Smart Glasses Linux OS patches Android OS patch & Mobile Apps including: AccuRange cross platform mobile app for golfers, AccuPin mobile app for golf club owners and managers. & AI Development contribution including Mira, the SaaS platform for deploying custom AI bots FlowX, AI Agents in Weeks with enterprise observability. Campaign AI, replaces 6 hours of manual SEO research AI MDR, cybersecurity automation platform with intelligent triggers and real-time AI threat response. and also 300+ chrome extensions and hundreds of websites, desktop & mobile apps, scripts, games. My 3-Step Process To ensure your project is successful, I follow a strict process: Free Architecture Audit: I map out your requirements and provide a free technical plan outlining the fastest, perfect and most effective path to delivery. Development: Once a contract begins or sometimes during the planning phase, I work directly with source code. Unlike other developers, I can implement modifications at the perfect place. Live Demonstration: You See Your Software/App/Browser whenever you want or at final delivery, you receive all source code, logins, API keys, and some documentation before we close the project and give each other 5 stars. The Proof & Client Feedback: With an impressive 80% rehire rate and over $180,000 in platform earnings. I regularly take on projects that other developers consider time taking, expensive, difficult or impractical, and bypass those roadblocks other developers face, which has resulted in many long-term client relationships and repeat engagements. Let's get started on your project and build it faster, more securely, and with greater flexibility than most developers and agencies do. 🌐. Chromium & Brave based Browser Development, 💻 Desktop Development, 📱 Mobile Development, 🚨 Security Systems Development, Patches, Bypasses, 🧠 AI and LLM Development, 🌐 Web Development, ⚙️ OS & System Software Development
- React Native
- Chromium
- C#
- C++
- Python
- Google Chrome Extension
- Android
- Operating Systems Development
- Chrome OS
- Computer Operating System
- Mobile Operating System
- Flutter
- Front-End Development
- Full-Stack Development
- Mobile App Development
Tando Allahyar, Pakistan
I build production-ready AI systems that automate complex business workflows, transform unstructured data into actionable intelligence, and integrate seamlessly into existing software. Whether you need an AI agent, a Retrieval-Augmented Generation (RAG) platform, a computer vision pipeline, document intelligence, or a complete AI-powered web application, I design, develop, and deploy solutions that are reliable, scalable, and built for production not demos. My work covers the complete AI engineering lifecycle, from architecture and backend development to deployment and long-term maintenance. I don't just connect APIs; I build systems that businesses can depend on every day. My expertise includes: • Large Language Model (LLM) Applications • AI Agents & Multi-Agent Systems • Retrieval-Augmented Generation (RAG) • Model Context Protocol (MCP) • AI Workflow Automation • Computer Vision & OCR • Document Intelligence • Custom Chatbots & Internal Knowledge Bases • FastAPI & Python Backend Development • Full-Stack AI Applications • REST APIs & Third-Party Integrations • Docker & Cloud Deployment • Vector Databases & Semantic Search • AI Infrastructure & Production Architecture Recent projects include: AI Knowledge Platform Designed and deployed a secure enterprise knowledge assistant capable of searching thousands of internal documents with source-backed responses, role-based access control, and production monitoring. Document Intelligence Pipeline Built an automated document processing system that extracts, classifies, validates, and structures information from PDFs, invoices, contracts, and business forms using modern AI techniques. Autonomous AI Agent Workflow Developed AI agents that research information, interact with external tools, analyze data, and generate structured reports with minimal human intervention. Computer Vision Automation Created production computer vision solutions for object detection, document understanding, and automated video analysis using deep learning models. Handwritten Formula Recognition Engineered an AI pipeline that converts handwritten mathematical expressions and technical diagrams into structured LaTeX with significantly reduced processing time. What clients can expect when working with me: • Clean, maintainable, production-quality code • Scalable architectures designed for long-term growth • Clear communication throughout the project • Security-first development practices • Comprehensive documentation • Reliable post-deployment support I work with startups, growing businesses, and enterprise teams looking to build AI software that delivers measurable business value rather than experimental prototypes. If you're planning to build an AI product, automate a business process, modernize an existing application with AI, or launch a production-ready intelligent system, I'd be happy to discuss your project and recommend the most practical approach.
- LangChain
- Retrieval Augmented Generation
- OpenAI API
- FastAPI
- Chatbot Development
- Python
- Machine Learning
- API Integration
- Docker
- Generative AI
- MLOps
- Vector Database
- Large Language Model
- Computer Vision
- AI Agent Development
Surat, India
✅ Available Now | 🎯 Top Rated Plus | 💯 100% Job Success I help startups and enterprises design and build production-grade GenAI systems, including AI agents, RAG pipelines, and LLM-powered platforms, using AWS Bedrock, OpenAI, and scalable cloud architecture. With 11+ years of engineering experience and a strong track record of delivering complex systems, I specialize in turning AI concepts into reliable, scalable, real-world applications. Most developers can integrate AI APIs. I focus on building end-to-end AI systems that actually work in production. What I Build ✅ AI Agents & Autonomous Workflows » Multi-step reasoning systems that automate business operations, decision-making, and task execution. ✅ RAG (Retrieval-Augmented Generation) Systems » Knowledge assistants built on internal data (PDFs, CRMs, databases) with citation-based answers and hallucination control. ✅ AWS Bedrock-Powered AI Solutions » Enterprise-grade GenAI systems using Claude/Titan with structured outputs, secure architecture, and scalable pipelines. ✅ LLM-Powered SaaS Platforms » End-to-end AI product development with clean architecture, real-time processing, and cost-optimized LLM usage. ✅ AI Analytics & NL2SQL Systems » Query your data in natural language, turn dashboards into conversational intelligence tools. ✅ AI Workflow Automation » Combine LLMs with APIs, scraping, and business logic to eliminate manual processes. Why Clients Hire Me → AI System Thinking I design complete AI architectures, not just prompts or APIs → Production-Ready Approach Built for scale, latency control, and cost efficiency → Business-First Execution Every system is aligned with measurable outcomes (efficiency, automation, ROI) → Fast Execution on Existing Systems Can jump into projects with ready docs, schemas, or wireframes ✅ Rapid Prototyping → Production AI Systems » Design and build fast AI prototypes (POCs/MVPs) to validate ideas, test feasibility, and demonstrate value. » Seamlessly transition prototypes into scalable, production-grade systems without rework. » Ideal for startups and teams exploring GenAI use cases before full investment. What Clients Say ~ “They consistently exceeded our expectations… a true partner in our automation journey.” “Delivered ahead of schedule with clean architecture and clear communication.” “They have no boundaries in terms of ability…” Results Delivered → Built enterprise AI document & workflow platforms with semantic search and automation → Delivered RAG systems with strict knowledge grounding and citation accuracy → Developed AWS Bedrock-based AI assistants for structured data extraction → Created AI-powered analytics systems with natural language querying → 10,000+ hours across SaaS, AI, and automation systems → 100% client satisfaction across all Upwork contracts Best Fit Projects → Building AI products (not experiments) → Implementing RAG / AI agents / automation systems → Migrating to AWS Bedrock or scalable GenAI infra → Adding AI capabilities to existing platforms Let’s Build AI Systems That Actually Work If you’re serious about using AI to solve real problems, not just testing ideas, I can help you design and build a system that delivers measurable impact.
- Python
- Django
- MongoDB
- Serverless Stack
- AWS Lambda
- AI Chatbot
- ChatGPT
- OpenAI API
- Point of Sale & Payment Systems
- Hugging Face
- ExpressJS
- Tailwind CSS
- Next.js
- Generative AI
- AI Agent Development
- Retrieval Augmented Generation
- Large Language Model
- Amazon Bedrock
- Natural Language Processing
- OCR Software
Tulkarm, Palestinian Territories
I build AI-powered systems, multi-agent platforms, and scalable SaaS applications that automate complex workflows and solve real business problems. With strong expertise in full-stack development and advanced AI engineering, I specialize in designing and implementing: 𝐀𝐈 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 & 𝐀𝐠𝐞𝐧𝐭 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞𝐬 • Multi-agent systems using LangChain and LangGraph • Autonomous AI agents for task execution, monitoring, and decision-making • RAG pipelines (Retrieval-Augmented Generation) with vector databases • Custom LLM integrations (chatbots, copilots, internal tools) • AI automation using Claude Code, OpenClaw, and agent-based workflows 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 • End-to-end automation systems for business processes • Server management and DevOps automation using AI agents • Workflow orchestration with n8n, Zapier, APIs, and event-driven systems 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 • Next.js & React: High-performance, SEO-optimized applications • Node.js / Express & Laravel: Scalable backends and APIs • Databases: MongoDB, PostgreSQL, MySQL (optimized for performance) • Real-time systems (WebSockets, live dashboards) • WordPress Ecosystem: Custom themes, WooCommerce stores, CartFlows sales funnels, and performance optimization 𝐀𝐈 𝐌𝐞𝐝𝐢𝐚 & 𝐂𝐨𝐧𝐭𝐞𝐧𝐭 𝐏𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬 • Advanced ComfyUI workflows for image & video generation • Automated content pipelines (generation, enhancement, upscaling) • Batch processing systems for scalable media production 𝐖𝐡𝐚𝐭 𝐌𝐚𝐤𝐞𝐬 𝐌𝐞 𝐃𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐭 I don’t just integrate AI — I design intelligent systems. I focus on: • Building production-ready AI architectures, not demos • Creating autonomous workflows that reduce human effort • Delivering scalable, maintainable systems that grow with your business 𝐑𝐞𝐬𝐮𝐥𝐭𝐬 𝐘𝐨𝐮 𝐂𝐚𝐧 𝐄𝐱𝐩𝐞𝐜𝐭 • Reduced manual work through automation • AI-powered features that enhance your product value • Clean, scalable architecture ready for growth
- Laravel
- PHP
- Node.js
- React
- Next.js
- JavaScript
- TypeScript
- MySQL
- Bootstrap
- Tailwind CSS
- Full-Stack Development
- n8n
- AI Development
- AI Model Integration
- AI Chatbot
Rabat, Morocco
⭐Top Rated AI Automation Expert ⭐ Tell me what you need built and I will make it run for you around the clock. That is what I do. If you send me an invite or a message, I will send you a personalised video showing exactly how I can help your specific situation. A little more about me: I help ambitious businesses save time and grow faster by building AI-powered workflows and automations. Whether it is data scraping, marketing systems, AI chatbots, or custom no-code tools, everything I build keeps working for you long after the project is done. If your team is drowning in spreadsheets or stuck doing the same manual tasks every day, I will build the automations and AI agents that turn that mess into a clean, efficient, data-driven operation with no developers required. - 150+ Automation systems and AI projects delivered - 100% Job Success Score | 5.0 stars average - Zapier Certified Expert | Make, n8n, Airtable specialist - Real, measurable ROI: my systems pay for themselves in weeks - Clear communication and tailored solutions, every time If you want someone professional, in the top 10% of Upwork, who delivers fast, I am the right person for this. EXPERTISE: AI Automation | No-Code Development | Airtable | Zapier | Make | n8n | AI Agents | ChatGPT Integration | LLM Implementation | Workflow Automation | API Integration | Database Design | Digital Workers | Business Process Automation
- Systems Development
- Automated Workflow
- n8n
- HighLevel
- Make.com
- Zapier
- AI Chatbot
- Prompt Engineering
- Automation
- Software Development
- Process Design
- Python
- System Analysis
- Generative AI
- CRM Automation
How it works
Post a job for free Post a job
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
“Upwork provides an umbrella-level of security. I can see a talent’s work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.”
Kim Darling
Emerald Tiger
“Upwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.”
David Merry
Kinetic Investments
“Our very specific requirements can be a challenge—With Upwork, we’re able to access a bigger community to ensure the success of our projects.”
Katja Krohn
Summa Linguae
How do I hire a Systems Developer on Upwork?
You can hire a Systems Developer on Upwork in four simple steps:
- Create a job post tailored to your Systems Developer project scope. We’ll walk you through the process step by step.
- Browse top Systems Developer talent on Upwork and invite them to your project.
- Once the proposals start flowing in, create a shortlist of top Systems Developer profiles and interview.
- Hire the right Systems Developer for your project from Upwork, the world’s largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a Systems Developer?
Rates charged by Systems Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a Systems Developer on Upwork?
As the world’s work marketplace, we connect highly-skilled freelance Systems Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Systems Developer team you need to succeed.
Can I hire a Systems Developer within 24 hours on Upwork?
Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive Systems Developer proposals within 24 hours of posting a job description.
Find more freelancers
Similar Systems Developer Skills
- ASP.NET Developers
- Java Developers
- CakePHP Developers
- Composable Application Developers
- Driver Developers
- Django Developers
- Desktop Applications Developers
- VB.NET Developers
- Doctrine ORM Specialists
- Application Engineers
- Operating Systems Developers & Programmers
- FastAPI Developers
- Embedded Systems Engineers
- CVS Developers
- Nhibernate Developers
- C# Developers & Programmers
Top Countries for Systems Developers
- Systems Developers in Kenya
- Systems Developers in Australia
- Systems Developers in Ethiopia
- Systems Developers in Egypt
- Systems Developers in Pakistan
- Systems Developers in Bangladesh
- Systems Developers in the United Arab Emirates
- Systems Developers in the Philippines
- CakePHP Developers in Poland
- CakePHP Developers in Venezuela
- CakePHP Developers in Morocco
- CakePHP Developers in Serbia
- CakePHP Developers in Sri Lanka
- CakePHP Developers in India
- SAP ABAP Developers in India
- CakePHP Developers in Bangladesh