Senior Game Frontend Engineer

- Build game frontends: visuals, interactions, animation, audio, and game API integration

- Maintain shared packages (core framework / UI modules), including version releases and cross-project upgrades

- Own responsive quality across three layouts (phone portrait, phone landscape, desktop/tablet), verified on real devices

- Write unit tests and verify your own work in a browser before handing it over

- Progressively build out automated testing and frontend performance measurement

Requirements

- 3+ years of professional React + TypeScript experience (strict mode, no reliance on any)

- Able to hand-write CSS / SCSS for responsive layouts, without depending on UI framework templates

- Solid grasp of animation and timing: requestAnimationFrame, CSS transitions/animations

- Hands-on debugging experience on mobile devices (iOS Safari / Android Chrome)

- Writes unit tests (Vitest / Jest + Testing Library)

- Able to develop day-to-day with AI tools (Claude Code / Cursor / Copilot, etc.): break requirements down into executable instructions, review and verify AI-generated code line by line, and judge when to accept it, correct it, or discard it entirely

Nice to have

- Experience maintaining and releasing shared packages / SDKs / monorepos

- Vite / Rollup build optimization (code splitting, bundle analysis)

- Canvas 2D / WebGL, Web Audio API

- Real-time streaming with SSE / WebSocket

- A solid sense of design and aesthetics, with concrete input on layout, visual hierarchy, and interaction details

- Able to judge whether your own feature is heading in the right direction, grounded in industry conventions or first-hand play experience

- Building AI development workflows: maintaining project rule documents, designing reusable prompts or agent workflows, MCP integration

- Game frontend development experience