Frontend Engineer — AI Observability & Evaluations

LangChain, Inc.; Town of Boston, Northern (NY, KY); Hybrid; USD 160,000 - 195,000; Full time

Benefits offered by this job

Medical, dental, vision coverage

401(k) plan

In-office meals

Job summary

LangChain, Inc. is seeking a frontend engineer to develop and enhance features on LangSmith, our enterprise platform for LLM observability, testing, and debugging.

You will implement user-facing features with React and TypeScript, build reusable components, and translate designs into high-quality code. The role offers collaboration with backend and UX teams, a path in a fast-paced startup environment, and a hybrid arrangement across San Francisco, New York, or Boston offices with some remote

Qualifications

• 2+ years of front-end engineering experience with React, JavaScript and TypeScript
• Experience with front-end development tools like Babel, Vite, Webpack, NPM, and Yarn
• Familiarity with REST APIs and collaboration with backend engineers
• Knowledge of modern authorization mechanisms such as JWTs
• Strong communication and ability to explain technical concepts clearly

Responsibilities

• Develop new user-facing features using React & 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 and UX/UI designers to enhance usability

Skills

React

JavaScript

TypeScript

REST APIs

JWT

UI/UX appreciation

Communication

CS fundamentals

Education

CS degree or related field

Tools

Babel

Vite

Webpack

NPM

Yarn

Job description

LangChain, Inc. is seeking a frontend engineer to develop and enhance features on LangSmith, our enterprise platform for LLM observability, testing, and debugging.

You will implement user-facing features with React and TypeScript, build reusable components, and translate designs into high-quality code. The role offers collaboration with backend and UX teams, a path in a fast-paced startup environment, and a hybrid arrangement across San Francisco, New York, or Boston offices with some remote