Frontend Engineer - AI Observability & Evals Platform
langchainNew York (NY)
Frontend Engineer - AI Observability & Evals Platform
Posted 2 days ago
langchainNew York (NY)
SENIORITY
Senior
About the role
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.
Before you apply
Applying takes about a minute. These four things decide how fast it moves after that.
Your profile is current
It's what we read first. Occupations, seniority and locations matter more than a long history.
Two examples you can talk through
Not a portfolio — just two pieces of work where you can explain the decisions and what you'd change.
A number in mind
What you're on now and what would make you move. We negotiate better when we know both.
Your notice period
Employers plan around it, and it's the question that stalls offers most often.
Once you apply, someone reads it and calls you before anything reaches the employer — usually within two working days.