Hire the Best API Developers in Prague, CZ

AI-powered full-stack product engineer with 13+ years of experience building SaaS, e-commerce, fintech, IoT, education, and security products. Individual contributor, owning product feature delivery end-to-end - driving architecture decisions, mentoring juniors. I help companies turn business requirements into production-ready software: from MVPs that need to launch fast to enterprise systems that need to scale, stay secure, and keep shipping under pressure. Across 30+ delivered projects, I’ve built and extended platforms used by millions of users, contributed to SOX-compliant systems, shipped real-time and high-load applications, and led delivery across complex product environments. My work has supported measurable business outcomes, including 7% conversion growth, faster go-to-market, lower maintenance overhead, and reliable scaling in production. I work across the full stack, with a strong focus on architecture, execution, and business alignment. That includes React, Next.js, Node.js, Ruby on Rails, NestJS, AWS, distributed systems, payments, integrations, and cloud infrastructure. What clients get from working with me: - Clear technical decisions, not endless options - Strong ownership and high agency - Clean, maintainable code with production standards from day one - Fast adaptation to new tools, changing scope, and delivery pressure - A bias for experimentation, iteration, and measurable results What I deliver: - Product and system consulting - Custom web application development - SaaS platforms and multi-tenant systems - API design and third-party integrations - E-commerce platforms and payment flows - Performance optimization and scaling - AWS infrastructure and architecture - UX/UI improvements that support engagement and conversion If you’re looking for someone who understands both the technical and business sides, and can turn complexity into working software, let’s talk.

I build serverless backends on AWS – Node.js, TypeScript, Lambda, DynamoDB. You get one engineer handling infrastructure and code, so there's no coordination mess. My clients typically launch 30–40% faster and save $2K–$5K/month on AWS. I solve complex problems with clean, production-ready solutions. No fluff, no delays – just results that scale.

✔️ Skilled professional with an academic background in IT ✔️ Proven commercial coding experience as a software developer since 2014 ✔️ Extensive knowledge of the whole software development life cycle Over the last 10+ years, my team and I have been building AI-powered products, backend systems, SaaS platforms, and automation tools designed around one simple goal - solving real business problems, not just shipping code. We’ve worked both as founders building our own products and as a technical partner helping startups and businesses launch, scale, automate operations, and turn ideas into production-ready systems. I work as a Senior Backend Engineer / Python Developer / AI Engineer backed by a full-cycle engineering team covering backend architecture, AI systems, integrations, infrastructure, and product development. With 10+ years in Python and AI systems, I’ve helped products reach 5M+ users and reduce manual operations by up to 80% for SaaS startups and growing businesses. I build production-ready APIs, automation, and AI platforms that turn ideas into reliable systems. 🤖 HOW I CAN HELP YOU AI SAAS DEVELOPMENT Turn your product idea into a scalable AI SaaS platform that can launch faster and support growth without constant rebuilds. I’ve helped deliver MVPs to production in about 6–10 weeks, with systems that have reached $700K MRR and 5M+ users. AI AUTOMATION SYSTEMS Reduce manual work and accelerate operations with workflows that handle repetitive tasks, routing, and decision-making automatically. My automation systems have cut operational workload by up to 80% and reduced manual operations by up to 70% in production. PYTHON BACKEND DEVELOPMENT Build a backend that stays stable under load, supports clean integrations, and gives your product room to scale. I work with FastAPI and Django on systems processing 100K+ real-time events daily, with architecture designed for concurrency, security, and long-term maintainability. API INTEGRATION DEVELOPMENT Connect your product to payments, CRMs, messaging tools, and third-party services so everything works as one system. I’ve built API-driven workflows with Stripe, Google Sheets, Microsoft Graph, Zapier, Make, and n8n to reduce friction and speed up operations. AI AGENT AND RAG DEVELOPMENT Add AI assistants that improve support, sales, and internal knowledge access without overwhelming your team. I build LLM, embeddings, and RAG-based systems that have processed 1.9M+ AI interactions in production and improved document and data processing speed by up to 10x. ⚙️ WHAT WE BUILD 🔹 Backend architecture, APIs, databases, AI layers, integrations, and deployment 🔹 SaaS products, AI automation platforms, and internal business systems 🔹 AI agents for operations, support, and sales 🔹 Document processing systems, OCR pipelines, RAG tools, and data extraction 🔹 Real-time systems, messaging platforms, dashboards, and reporting systems 🔹 Secure systems with authentication, roles, permissions, and audit logs 🔹 CRM integrations, Stripe subscriptions, webhooks, and workflow automation 📊 ADDITIONAL BUSINESS RESULTS 🔹 $800K+ generated by a SaaS platform within its first year 🔹 Backend systems supporting products generating $1M+ revenue 🔹 Up to 90% reduction in reporting errors after workflow automation 🔹 Rescue and rebuild of unstable systems into scalable production platforms 🎖 Python Developer 🎖 AI Developer 🎖 Machine Learning Engineer 𝗛𝗼𝘄 𝗜 𝗪𝗼𝗿𝗸 I build backend systems in Python with FastAPI and Django, then connect them to PostgreSQL and REST APIs for stable, scalable delivery. I use OpenAI and LangChain to add practical AI workflows, and I deploy on AWS with Docker so environments stay reliable. I manage integrations, automation, and data pipelines through webhooks and Node.js, keeping releases clean and production-ready. I build FastAPI and Django backends, integrate AI automation, and ship SaaS platforms with PostgreSQL, REST APIs, and AWS for startups. 🤝 𝗚𝗘𝗧 𝗜𝗡 𝗧𝗢𝗨𝗖𝗛 Have an AI, backend, or SaaS project ready? Message me on Upwork today for a free consultation and a clear plan to move forward.