Senior Frontend Engineer, AI Observability & Evals Platform

LangChain; San Francisco (CA); Remote; USD 180,000 - 240,000; Full time

Benefits offered by this job

Medical coverage

Dental coverage

Vision coverage

401(k) plan

Flexible vacation

In-office meals

Job summary

LangChain is hiring an experienced frontend engineer to build and enhance LangSmith, our enterprise platform for LLM observability, testing, and debugging. You will develop user-facing features with React and TypeScript, create reusable components, and translate designs into high-quality code.

You will collaborate with backend engineers and UX/UI designers to optimize performance and usability, thriving in a fast-paced startup environment with ownership and impact.

Qualifications

• Experience with frontend development using React, JavaScript, and TypeScript.
• Familiar with frontend tooling like Babel, Vite, Webpack, NPM, and Yarn.
• Experience with REST APIs and collaborating with backend teams.
• Knowledge of modern authorization methods, e.g., JWTs.
• Strong emphasis on UX, design, and intuitive interfaces.

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 fullstack, backend, and UX/UI teams to improve usability.

Skills

React

JavaScript

TypeScript

REST APIs

UX/UI collaboration

Communication

Ownership mindset

CS degree

Education

Bachelor's degree in Computer Science or related field

Tools

Babel

Vite

Webpack

NPM

Yarn

Job description

LangChain is hiring an experienced frontend engineer to build and enhance LangSmith, our enterprise platform for LLM observability, testing, and debugging. You will develop user-facing features with React and TypeScript, create reusable components, and translate designs into high-quality code.

You will collaborate with backend engineers and UX/UI designers to optimize performance and usability, thriving in a fast-paced startup environment with ownership and impact.