Frontend Engineer for AI Observability & Evaluations

Neura Market; San Francisco, Northern (CA, KY); Hybrid; USD 160,000 - 195,000; Full time

Job summary

LangChain is seeking a frontend engineer to develop and enhance features on LangSmith, our enterprise platform for LLM observability, testing, and debugging. The role offers offices in San Francisco, New York, or Boston, with hybrid options for those outside commuting distance.

You will build robust UI components, collaborate with cross-functional teams, and contribute to a fast-paced startup culture that values ownership and impact.

Qualifications

• 2+ years of frontend engineering experience with React and TypeScript.
• Hands-on experience with frontend tools like Babel, Vite, Webpack, NPM, and Yarn.
• Familiarity with REST APIs and collaboration with backend teams.
• Knowledge of modern authorization mechanisms, such as JWTs.
• Passion for user experience and building clean, intuitive interfaces.

Responsibilities

• Develop new user-facing features using React and TypeScript.
• Build reusable components and front-end libraries for future use.
• Translate designs and wireframes into high-quality code.
• Optimize components for performance across devices and browsers.
• Collaborate with full-stack, backend, and UX/UI designers to enhance usability.

Skills

React

TypeScript

JavaScript

REST APIs

JWTs

UI/UX design

Communication

Startup mindset

CS degree

Education

Bachelor's degree in CS or related

Tools

Babel

Vite

Webpack

NPM

Yarn

Job description

LangChain is seeking a frontend engineer to develop and enhance features on LangSmith, our enterprise platform for LLM observability, testing, and debugging. The role offers offices in San Francisco, New York, or Boston, with hybrid options for those outside commuting distance.

You will build robust UI components, collaborate with cross-functional teams, and contribute to a fast-paced startup culture that values ownership and impact.