Full-stack product engineer with 5+ years shipping production React/TypeScript applications, now building AI-first systems with Claude Code, local LLM orchestration, and agent architectures. Proven track record migrating legacy codebases, scaling apps to 50K+ DAU, and independently shipping complex full-stack side-projects end-to-end (backend, frontend, infra, CI/CD). Fluent in Polish, Ukrainian, and English, comfortable with async, remote, cross-timezone work.
Ship production React/TypeScript components powering the core platform, with strict focus on accessibility (WCAG) and cross-browser reliability. Drive UI consistency and modularity by evolving the internal design system, reducing duplication and onboarding time for new contributors. Translate ambiguous product requirements into clean, maintainable, scalable code; active participant in sprint planning, grooming, and delivery cycles.
Led full rewrite of a legacy codebase from KnockoutJS/jQuery to a modern TypeScript + React stack, dramatically improving maintainability and velocity. Selected and integrated TanStack Query, styled-components, and Ant Design to replace aging dependencies, introducing modern patterns to the team. Operated in a fully remote async team, delivering features independently across timezones.
Joined early-stage pharma project at 15% completion and drove it to production delivery. Owned both frontend (React) and backend (Node.js) work end-to-end, full-stack ownership on a small, high-trust team.
Built and maintained .NET backend services and REST APIs backed by SQL databases, part-time hybrid role.
B.Eng., Information Technology (Robotics)
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