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October 1, 2026
Senior Frontend Engineer (React/TypeScript)
Senior • Remote
269,346 - 346,302 PLN/yr
Warsaw, Poland
Quick Facts
Role: Senior Frontend Engineer (React/TypeScript)
Description
Own end-to-end frontend features, from early product conversations through shipped production UI. Maintain and improve a multi-year React/TypeScript codebase while partnering with product and business stakeholders to deliver higher quality, speed, and accessibility. Build rapid, credible prototypes using AI coding tools, ensuring outputs stay reviewable.
Responsibilities
Deliver own frontend features end to end, including parts nobody assigned
Build quick, credible prototypes to help the team choose direction before committing
Work directly with product and business stakeholders to refine questions that change the spec
Push back on specifications and API designs when they make the frontend worse
Keep a several-year-old React codebase healthy so it remains pleasant to work in
Improve UI quality, performance, and accessibility
Turn designs and rough sketches into interfaces that look right on every screen
Prototype and ship faster with AI coding tools while keeping output reviewable
Review code and participate in technical decisions in a small senior frontend team
Requirements
5+ years of experience building production web applications
Deep knowledge of React (rendering behavior, state management trade-offs)
Strong TypeScript skills
Solid CSS and layout skills
Experience consuming and shaping REST APIs
Daily use of AI coding tools as a core part of development
Ability to build faster working prototypes with AI and explain concretely how you delegate, write, and review
Working knowledge of AI failure modes and habits to catch issues (e.g., plausible-but-wrong code, scope drift)
Experience owning frontend work in a small team or startup
Ability to communicate effectively with non-technical stakeholders
Availability for at least 3 hours daily overlap with US Eastern Time
Professional spoken and written English
Benefits
Take features from concept to production while influencing product direction
Work in a small senior frontend team with direct collaboration
Use AI coding tools to prototype and ship faster with reviewable output
Focus on improving quality, performance, and accessibility in a real production UI
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