🚀 Senior Full Stack Engineer | 10+ Years | Built Platforms Used by Thousands If you need a developer who can turn your idea into a reliable, scalable product — not just write code — you’re in the right place. Over the past 10+ years, I’ve helped startups and companies build production-grade platforms from scratch, modernize legacy systems, and scale applications to support thousands of real users. I specialize in React, Next.js, Node.js, Java Spring Boot, and cloud-native deployment with Docker and Kubernetes. At Zalando, I helped build a B2B platform that improved feature delivery speed by 40% and supported high concurrent traffic reliably. I’ve worked across the full lifecycle — architecture, development, deployment, and long-term scalability. 💼 What I can help you with: • Build your SaaS, web app, or platform from scratch • Scale and optimize your existing application • Fix performance, architecture, or reliability issues • Develop high-quality frontend (React, Next.js) • Build secure, scalable backend APIs (Node.js, Java, Python) • Deploy and manage applications with Docker, Kubernetes, CI/CD 🧠 What makes me different: • I take full ownership, not just tasks • I focus on long-term, scalable solutions • I communicate clearly and respond quickly • I write clean, maintainable, production-ready code • I think like a product partner, not just a programmer My goal is simple: build software that helps your business grow reliably. If you’re looking for someone dependable, experienced, and committed to your success — let’s talk.

🚀 Senior Full Stack Engineer | 10+ Years | Built Platforms Used by Thousands If you need a developer who can turn your idea into a reliable, scalable product — not just write code — you’re in the right place. Over the past 10+ years, I’ve helped startups and companies build production-grade platforms from scratch, modernize legacy systems, and scale applications to support thousands of real users. I specialize in React, Next.js, Node.js, Java Spring Boot, and cloud-native deployment with Docker and Kubernetes. At Zalando, I helped build a B2B platform that improved feature delivery speed by 40% and supported high concurrent traffic reliably. I’ve worked across the full lifecycle — architecture, development, deployment, and long-term scalability. 💼 What I can help you with: • Build your SaaS, web app, or platform from scratch • Scale and optimize your existing application • Fix performance, architecture, or reliability issues • Develop high-quality frontend (React, Next.js) • Build secure, scalable backend APIs (Node.js, Java, Python) • Deploy and manage applications with Docker, Kubernetes, CI/CD 🧠 What makes me different: • I take full ownership, not just tasks • I focus on long-term, scalable solutions • I communicate clearly and respond quickly • I write clean, maintainable, production-ready code • I think like a product partner, not just a programmer My goal is simple: build software that helps your business grow reliably. If you’re looking for someone dependable, experienced, and committed to your success — let’s talk.

Available to hire

🚀 Senior Full Stack Engineer | 10+ Years | Built Platforms Used by Thousands

If you need a developer who can turn your idea into a reliable, scalable product — not just write code — you’re in the right place.

Over the past 10+ years, I’ve helped startups and companies build production-grade platforms from scratch, modernize legacy systems, and scale applications to support thousands of real users. I specialize in React, Next.js, Node.js, Java Spring Boot, and cloud-native deployment with Docker and Kubernetes.

At Zalando, I helped build a B2B platform that improved feature delivery speed by 40% and supported high concurrent traffic reliably. I’ve worked across the full lifecycle — architecture, development, deployment, and long-term scalability.

💼 What I can help you with:
• Build your SaaS, web app, or platform from scratch
• Scale and optimize your existing application
• Fix performance, architecture, or reliability issues
• Develop high-quality frontend (React, Next.js)
• Build secure, scalable backend APIs (Node.js, Java, Python)
• Deploy and manage applications with Docker, Kubernetes, CI/CD

🧠 What makes me different:
• I take full ownership, not just tasks
• I focus on long-term, scalable solutions
• I communicate clearly and respond quickly
• I write clean, maintainable, production-ready code
• I think like a product partner, not just a programmer

My goal is simple: build software that helps your business grow reliably.

If you’re looking for someone dependable, experienced, and committed to your success — let’s talk.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
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Expert
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Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Language

Czech
Fluent
English
Fluent
Russian
Advanced
Japanese
Advanced

Work Experience

Senior Full Stack Engineer at Zalando
January 1, 2021 - January 1, 2025
I was part of the engineering team building a new B2B platform from the ground up, used internally and by business partners across multiple regions. This wasn’t just feature work — it involved making architectural decisions that would support the platform long-term. I designed and implemented backend services using Spring Boot, PostgreSQL, and Redis, focusing on reliability, scalability, and clear service boundaries. On the frontend, I developed production interfaces using React and TypeScript, ensuring the system was responsive and intuitive for users handling real business operations. As the system grew, I helped introduce Docker-based containerization and CI/CD pipelines using GitHub Actions, allowing safe and frequent deployments. I also diagnosed and resolved production issues, including performance bottlenecks and database inefficiencies. This platform successfully scaled to support thousands of concurrent users, and our improvements significantly increased development velocity and system reliability.
AI Engineer at Freelance/contract
January 1, 2023 - Present
I’ve worked on integrating AI capabilities into real-world applications, helping platforms automate workflows and improve productivity using large language models. I designed and implemented backend services using Python (FastAPI) and Node.js to integrate with LLM APIs such as OpenAI and Claude. These services handled prompt processing, response validation, and system integration. One of the key challenges was ensuring reliability and performance when interacting with AI systems. I implemented caching strategies, error handling, and fallback mechanisms to ensure stable operation in production environments. These systems enabled automation of tasks such as content generation, document processing, and intelligent workflow assistance. This experience strengthened my ability to deploy AI-powered features in real production systems.
Full Stack Engineer at LusoTech
July 14, 2017 - January 28, 2021
I worked on modernizing a legacy enterprise platform that had become difficult to maintain and risky to extend. The system was originally a tightly coupled monolith, and even small changes carried deployment risk. I helped redesign backend components into smaller, maintainable services using Node.js, Java, and Python. I implemented core system functionality, including authentication, order workflows, and integrations with external systems such as payment providers and CRMs. I also worked extensively with PostgreSQL and MongoDB, improving query performance and ensuring stable system behavior under production load. This role strengthened my ability to improve complex systems while maintaining stability for existing users.
Full Stack Developer at Denevy
October 3, 2013 - May 12, 2017
I developed customer-facing web applications used in real production environments. My work included both frontend and backend development using React, Angular, Node.js, and Laravel. I implemented APIs, built reusable frontend components, and optimized database queries to improve performance. I also worked on diagnosing and resolving production issues, ensuring systems remained reliable as usage increased. This role provided a strong foundation in full stack development and production system reliability.

Education

BSc Software Engineering at Czech Technical University
January 1, 2011 - January 1, 2015

Qualifications

IBM Full Stack Software Developer Professional Certification
September 13, 2019 - December 11, 2019

Industry Experience

Telecommunications, Energy & Utilities, Travel & Hospitality
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    uniE621 Music Artist & Media Platform
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