Senior Frontend Engineer, Annotation Tools
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Job Location:
Sunnyvale, CA - USA
Monthly Salary:
Not Disclosed
Posted on:
30+ days ago
Vacancies:
1 Vacancy
Job Summary
As a Senior Web Frontend Engineer youll lead the design and development of sophisticated React-based annotation tools that combine polished user experiences with intelligent AI collaborate directly with product managers designers and end-users to understand annotation workflows translate requirements into elegant web applications and continuously improve tools that enhance annotator productivity bring both precision and creativityimplementing pixel-accurate designs when specifications exist and exercising strong UX judgment when they dont. Youll help shape frontend systems that scale gracefully balancing user experience maintainability and role sits at the intersection of frontend engineering design sensibility and product thinking.
- 5 years of experience building and scaling production web applications in React and TypeScript including component architecture state management and performance optimization.
- Expertise with modern frontend build tools and styling frameworks (e.g. Vite Webpack Tailwind CSS CSS Modules) and strong grasp of modern JavaScript/CSS practices.
- Proven ability to translate design specifications into pixel-perfect UI implementations and to make thoughtful user-centered UI/UX decisions when specifications are incomplete.
- Demonstrated experience collaborating with product managers designers and end-users to deliver high-quality customer-facing web applications.
- Solid understanding of frontend architecture and modular design principles (e.g. design systems component reuse scalability).
- Experience designing or implementing multi-tool or modular frontend systems that support evolving product workflows.
- Expertise building annotation labeling or complex data-visualization tools.
- Experience integrating AI/ML models or SDKs into frontend applications.
- Strong performance optimization skills in data-heavy real-time or media-rich web applications.
- Experience developing or maintaining shared design systems or component libraries.
- Proficiency using AI-assisted development tools (e.g. Cursor Windsurf Claude Code VS Code extensions) to accelerate coding tasks while maintaining code quality.
Required Experience:
Senior IC
Key Skills
- APIs
- C/C++
- Computer Graphics
- Go
- React
- Redux
- Node.js
- AWS
- Library Services
- Assembly
- GraphQL
- High Voltage
About Company
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