Senior Frontend Engineer, Annotation Tools
7 days ago
Role Number: 200619972-3956
Summary
We’re seeking a detail-oriented Senior Frontend Engineer to build world-class web-based annotation tools using React and TypeScript. You’ll design and implement modular, scalable frontend architectures that power multiple annotation workflows (image, text, audio) in a shared platform.
You’ll create responsive, high-quality interfaces that enable global annotators to work efficiently-combining exceptional frontend craftsmanship with thoughtful system design and AI-assisted productivity. This role is ideal for someone who values design quality, architectural clarity, and close collaboration with product and design partners.
Description
As a Senior Web Frontend Engineer, you’ll lead the design and development of sophisticated React-based annotation tools that combine polished user experiences with intelligent AI integration.
You’ll 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 worldwide.
You’ll bring both precision and creativity—implementing pixel-accurate designs when specifications exist and exercising strong UX judgment when they don’t. You’ll help shape frontend systems that scale gracefully, balancing user experience, maintainability, and performance.
This role sits at the intersection of frontend engineering, design sensibility, and product thinking.
Minimum Qualifications
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5+ years of experience building and scaling production web applications in React and TypeScript, including component architecture, state management, and performance optimization.
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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.
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Proven ability to translate design specifications into pixel-perfect UI implementations and to make thoughtful, user-centered UI/UX decisions when specifications are incomplete.
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Demonstrated experience collaborating with product managers, designers, and end-users to deliver high-quality, customer-facing web applications.
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Solid understanding of frontend architecture and modular design principles (e.g., design systems, component reuse, scalability).
Preferred Qualifications
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Experience designing or implementing multi-tool or modular frontend systems that support evolving product workflows.
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Expertise building annotation, labeling, or complex data-visualization tools.
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Experience integrating AI/ML models or SDKs into frontend applications.
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Strong performance optimization skills in data-heavy, real-time, or media-rich web applications.
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Experience developing or maintaining shared design systems or component libraries.
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Proficiency using AI-assisted development tools (e.g., Cursor, Windsurf, Claude Code, VS Code extensions) to accelerate coding tasks while maintaining code quality.
Apple is an equal opportunity employer that is committed to inclusion and diversity. We seek to promote equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Learn more about your EEO rights as an applicant (https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf) .
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