Senior Frontend Engineer, AI Observability & Evals Platform

Description: Develop and enhance new features on LangSmith, an enterprise platform for LLM application observability, testing, and debugging. Collaborate with fullstack and backend developers and UX/UI designers to enhance usability. Requirements: Extensive front-end engineering experience with strong proficiency in React, JavaScript, and TypeScript. Hands-on experience with front-end development tools like Babel, Vite, Webpack, NPM, and Yarn. Familiarity with REST APIs and modern authorization mechanisms (e.g., JWTs). Strong communication skills to explain technical concepts to both technical and non-technical stakeholders. Ability to thrive in a fast-paced, startup environment with an ownership mindset. Strong computer science fundamentals, ideally with a degree in computer science or related field. Benefits: Competitive compensation including base salary, variable compensation, meaningful equity, and benefits. Medical, dental, and vision coverage, flexible vacation, a 401(k) plan, and meals on in-office days in the US.