drjobs Senior Frontend Engineer, Annotation Tools

Senior Frontend Engineer, Annotation Tools

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1 Vacancy
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Job Location drjobs

Sunnyvale, CA - USA

Monthly Salary drjobs

Not Disclosed

drjobs

Salary Not Disclosed

Vacancy

1 Vacancy

Job Description

As a Senior Web Frontend Engineer youll design and develop sophisticated Reactbased annotation tools that combine polished user experiences with intelligent AIintegration. Youll collaborate directly with product managers designers and end-usersto understand workflows translate requirements into elegant applications andcontinuously improve tools that support annotators worldwide.


  • Extensive experience (5 years) building and scaling production web applications in React and TypeScript including component architecture state management and performance optimization.
  • Proficiency with modern frontend build tools and styling frameworks (e.g. Vite Webpack Tailwind CSS CSS Modules) and strong grasp of modern JavaScript/CSS practices.
  • Ability to translate design specifications into pixel-accurate UI implementations and to make thoughtful user-centered UI/UX decisions when specifications are incomplete balancing usability accessibility and consistency with the products design system.
  • Proven experience working directly with product managers designers or end-users to gather requirements and iteratively deliver production-ready customer-facing applications.


  • Experience building annotation labeling or complex data visualization tools or other workflow-driven web applications.
  • Experience integrating AI/ML models into web applications through APIs and SDKs
  • Performance optimization expertise in data-heavy real-time or media-rich web applications (e.g. optimizing rendering state management or network performance).
  • Experience developing or contributing to design systems and reusable component libraries that ensure consistency and scalability across applications.
  • Proficiency using AI-assisted development tools (e.g. claude code vs code extensions cursor windsurf etc) to accelerate coding tasks while maintaining code quality and review standards.

Required Experience:

Senior IC

Employment Type

Full Time

Company Industry

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