LangChain
Frontend Engineer, AI Observability & Evals Platform
About this role
LangChain is hiring a Frontend Engineer to develop and enhance features on LangSmith, their enterprise platform for LLM application observability, testing, and debugging. You'll build user-facing components and libraries using React and TypeScript while collaborating with backend engineers and designers.
What you'll do
- Develop new user-facing features using React and TypeScript
- Build reusable components and front-end libraries
- Translate designs and wireframes into high-quality code
- Optimize components for performance across devices and browsers
- Collaborate with fullstack, backend engineers, and UX/UI designers
What they're looking for
- React and TypeScript
- JavaScript
- Front-end build tools (Babel, Vite, Webpack, NPM, Yarn)
- REST APIs
- JWT authentication
- UI/UX design principles
- Component-driven development
- Cross-browser optimization
Benefits
- Medical, dental, and vision coverage
- Flexible vacation
- 401(k) plan
- Meals provided on in-office days in the US
- Meaningful equity
- Office locations in San Francisco, New York, or Boston with hybrid options available
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LangChain
LangChain builds platforms and frameworks for developing, deploying, and observing production AI agents at enterprise scale, including LangSmith for AI observability and evaluation. The company is hiring Deployed Engineers to work directly with enterprise customers on agent implementation and operations, as well as Fullstack Engineers to build features across its platform stack.
- Website
- langchain.com
Likely interview questions
- Walk us through a complex React component you've built—how did you handle state management and performance optimization?
- Describe your experience translating design mockups into responsive, pixel-perfect code. What challenges did you encounter?