Frontend Engineer - AI Observability & Evals Platform

LangChain; New York (NY); Hybrid; USD 160,000 - 195,000; Full time

Benefits offered by this job

Equity

401(k)

Medical, Dental, Vision

Job summary

LangChain is seeking a frontend engineer to develop and enhance features on LangSmith, our enterprise platform for LLM observability, testing, and debugging. You will join our San Francisco, New York, or Boston offices, contributing to a fast-paced, collaborative startup culture.

You will build user-facing features with React and TypeScript, create reusable UI components, and translate designs into high-quality code while ensuring performance across devices.

Qualifications

• 2+ years of frontend engineering experience with React, JavaScript, and TypeScript.
• Experience with front-end dev tools such as Babel, Vite, Webpack, NPM, and Yarn.
• Familiarity with REST APIs and collaborating with fullstack/backend engineers.
• Knowledge of modern authorization mechanisms like JWTs.
• Passion for user experience and creating clean, engaging 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 frontend, backend, and UX/UI teams to improve usability.

Skills

React

JavaScript

TypeScript

Babel

Vite

Webpack

REST APIs

JWTs

UX/UI

Communication

Startup mindset

CS fundamentals

Education

B.S. in Computer Science

Tools

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. You will join our San Francisco, New York, or Boston offices, contributing to a fast-paced, collaborative startup culture.

You will build user-facing features with React and TypeScript, create reusable UI components, and translate designs into high-quality code while ensuring performance across devices.