vunderraffle

I'm a Senior Full-Stack Engineer with 6+ years of commercial experience building web products, backend services, and blockchain integrations with TypeScript, React, Next.js, Node.js/NestJS, PostgreSQL, and Solidity.
At Arkada GG, I own backend architecture and delivery: REST APIs, authorization, partner integrations, BullMQ workers, and a pipeline for collecting and validating on-chain activity. I automate deterministic CREATE2 smart-contract deployments across 16+ network environments, replacing manual deployment runbooks.
Previously, I spent 3 years as a Frontend Lead / Blockchain Developer at RedDuck. I led frontend and smart-contract teams, set engineering standards, reviewed code, mentored engineers, and worked directly with clients on requirements and delivery scope. A key project was Midas, tokenized RWA infrastructure.
My strongest area is reliable product engineering: consistent data, idempotent processing, resilient integrations, and repeatable releases. I work across frontend, backend, and smart contracts, with a strong focus on backend ownership.
I also build internal AI integrations with the Claude API, Claude SDK, Claude Managed Agents, MCP servers, and retrieval using pgvector, including schema validation before database writes. AI is part of my daily engineering workflow; I retain ownership of correctness and review what ships.
Core stack: TypeScript, React, Next.js, Node.js, NestJS, PostgreSQL, Prisma, BullMQ, Solidity, Foundry, Viem, Docker, CI/CD, AWS.
Open to Senior Full-Stack and Backend Engineer roles in product teams, including Web3. Based in Kraków; remote or hybrid locally. English and Russian.
Contact: [email protected]