Senior Frontend Engineer API/Interface Design
RemotePoland
PolandRemoteFull TimeSenior LevelBachelors DegreeMedium
Full TimeSenior LevelBachelors DegreeMedium
Job Summary
Design and evolve the public REST and Server-Sent Events API surface, including OpenAPI specifications and generated partner clients. Implement and maintain the production frontend in React and TypeScript for real-time vehicle state dashboards, variant management, and partner-facing portals. Integrate 3D vehicle assets using three.js or react-three-fiber and build developer tools with typed clients, runtime validation, and contract tests. Own resilience of streaming UI components and participate in technical conversations with external integration partners for API design reviews and documentation.
Required Qualifications
- Bachelor's degree in Computer Science or related field, equivalent practical experience
- 5+ years of production experience with React and TypeScript, including end-to-end type safety
- Hands-on experience designing and evolving OpenAPI 3.x specifications and the tooling around them (validators, mocks, client generators)
- Strong schema-first instincts (Zod, JSON Schema, runtime validation at boundaries)
- Solid working understanding of REST and streaming protocols (Server-Sent Events, WebSocket)
- Practical experience integrating 3D content in the browser with three.js or react-three-fiber: scenes, cameras, glTF loading, basic performance tuning
- Strong code review culture and ability to collaborate with backend and design counterparts
- Fluent English
Desired Qualifications
- Frontend integration testing with Playwright or Cypress, including visual regression workflows
- Experience writing partner- or developer-facing technical content (HOWTOs, integration guides, release notes)
- Working experience with multi-site, multi-national and multi-contributor teams
- Knowledge of automotive products, is a plus but not required
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