Senior Backend Engineer & Tech Lead | Node.js · TypeScript · PostgreSQL · Cloud Architecture
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Build, extend, or fix backend systems using Node.js/TypeScript, NestJS, PostgreSQL, and cloud platforms (GCP/AWS). Includes REST/GraphQL APIs, microservice architecture, database design, payment integrations (Stripe), real-time features (WebSockets, RabbitMQ), and multi-tenant SaaS platforms. 8+ years of production experience across fintech, government, and event management domains.
Fractional Tech Lead / architectural consulting for your team. I'll review your codebase, make technology decisions, design system architecture, establish dev processes, mentor engineers, and run code reviews. Currently leading a team of 6 engineers on two production SaaS products. Ideal for startups needing senior technical guidance without a full-time CTO hire.
Tech Lead and Senior Backend Engineer with 8+ years building production systems at scale. I lead teams of 6+ developers and personally architect and code the solutions — not just manage from the sidelines. What I deliver: multi-tenant SaaS platforms, payment integrations (Stripe, PostFinance), microservice architectures (30+ services), real-time systems (WebSockets, RabbitMQ), and geospatial features (PostGIS). I've built platforms serving Europe's largest dance festival and green energy systems for Swiss/German governments. Stack: Node.js, TypeScript, NestJS, PostgreSQL, MongoDB, DynamoDB, GCP, AWS, Docker, GraphQL, gRPC. I also bring AI tooling experience (Copilot, Claude/ChatGPT APIs, prompt engineering) — I understand how AI agents work and can collaborate with them effectively. Fluent in English. Available for backend development, system architecture, code reviews, technical consulting, and team augmentation. Based in EU (Slovakia), flexible hours.