LangChain

Product Manager, LangSmith

Product Manager

3+ years in product management or engineering, strong technical depth, action-oriented, clear communicator.

Senior Fullstack Engineer, Growth & Monetization

Fullstack Engineer

Fullstack development with React, TypeScript, Go and/or Python; growth/monetization features; REST APIs, Postgres, Redis; startup mindset; in-person in NYC/SF/Boston.

Fullstack Software Engineering Manager, Observability & Evals Platform 

Fullstack Software Engineering Manager

Experience leading software teams, strong backend in Go/Python, frontend in React/Typescript, API design, and observability platform work.

Senior QA / SDET Engineer

QA / SDET Engineer

3+ years in QA/SDET with test automation for distributed or cloud products; strong Python (pytest) and TypeScript (Playwright/Jest); CI/CD (GitHub Actions); API testing; cross-team collaboration.

Fullstack Software Engineer, Applied AI 

Applied AI Engineer

3+ years software engineering; 1+ year building AI apps; Python/TypeScript; evaluating agents; strong communication; startup mindset.

Senior Backend Software Engineer, Observability & Evals Platform

Backend Engineer

3+ years backend experience; Python or Go; API design; high-throughput systems; databases (Postgres, Redis, Clickhouse); cloud platforms (AWS, GCP, Azure); strong collaboration.

Full Stack Engineer,  Observability & Evals Platform (LangSmith)

Full Stack Engineer

2+ years software engineering; full-stack with Go or Python backend and React + Typescript frontend; Postgres/Redis; API design; strong collaboration; ownership; able to ship quickly; bonus AI/LLM experience.

Education Engineer

Experience in software development or ML; ability to create educational content for developers; strong communication; experience teaching technical topics; degree in CS/Data Science or related field.

Senior Frontend Engineer, Observability & Evals Platform (LangSmith)

Frontend Engineer

Senior frontend engineer with React/TypeScript, experience in UI/UX, REST APIs, and strong CS fundamentals; able to work in a fast-paced startup.

Senior Technical Support Engineer

Technical Support Engineer

4+ years in technical support or SRE in deeply technical B2B environments; strong troubleshooting APIs, SDKs, Kubernetes, Docker; Python; enterprise support.

Senior Full Stack Engineer,  Observability & Evals Platform (LangSmith)

Senior Full Stack Engineer

Senior full stack engineer with 7+ years, backend Go/Python, frontend React/Typescript, Postgres/Redis, API design, collaboration, ownership.

Account Executive

5+ years enterprise software sales; experience leading a engineering team; relationship-builder with strong communication; thrive in fast-paced startup; knowledge of generative AI; capable of negotiating and guiding deals.

JavaScript Engineer (Open Source Team) 

JavaScript Engineer

JavaScript engineer to maintain and improve LangChain JS package; in-person SF preferred.

Python OSS Engineer 

5+ years software engineering or applied ML; strong communication; fast-moving environment; ownership-minded.

Title	Location	Date
Product Manager, LangSmith Full Time · $175K-$200K · 3+ YOE San Francisco, California, United States · Onsite	San Francisco, California, United States Onsite	Nov 24, 2025
Senior Fullstack Engineer, Growth & Monetization Full Time New York City or San Francisco or Boston · Onsite	New York City or San Francisco or Boston Onsite	Oct 23, 2025
Fullstack Software Engineering Manager, Observability & Evals Platform Full Time · $200K-$235K San Francisco, California, United States · Onsite	San Francisco, California, United States Onsite	Oct 17, 2025
Senior QA / SDET Engineer Full Time · $145K-$195K · 3+ YOE San Francisco or New York · Onsite	San Francisco or New York Onsite	Sep 29, 2025
Fullstack Software Engineer, Applied AI Full Time · 3+ YOE San Francisco or New York or Boston · Onsite	San Francisco or New York or Boston Onsite	Sep 12, 2025
Senior Backend Software Engineer, Observability & Evals Platform Full Time · $155K-$195K · 3+ YOE San Francisco or New York City · Onsite	San Francisco or New York City Onsite	Sep 1, 2025
Full Stack Engineer, Observability & Evals Platform (LangSmith) Full Time · $140K-$175K · 2+ YOE San Francisco or New York or Boston · Onsite	San Francisco or New York or Boston Onsite	Aug 15, 2025
Education Engineer Full Time San Francisco, California, United States · Hybrid	San Francisco, California, United States Hybrid	Jul 29, 2025
Senior Frontend Engineer, Observability & Evals Platform (LangSmith) Full Time · $155K-$195K San Francisco or New York or Boston or London or Amsterdam · Onsite	San Francisco or New York or Boston or London or Amsterdam Onsite	Jun 9, 2025
Senior Technical Support Engineer Full Time · $130K-$170K · 4+ YOE United States · Onsite	United States Onsite	Jun 4, 2025
Senior Full Stack Engineer, Observability & Evals Platform (LangSmith) Full Time · $165K-$198K · 7+ YOE San Francisco, California, United States · Onsite	San Francisco, California, United States Onsite	Feb 19, 2025
Account Executive Full Time · $225K-$325K · 5+ YOE San Francisco or New York City or Chicago or Dallas or Minneapolis or London or Amsterdam · Onsite	San Francisco or New York City or Chicago or Dallas or Minneapolis or London or Amsterdam Onsite	Feb 10, 2025
JavaScript Engineer (Open Source Team) Full Time · $115K-$155K San Francisco or New York City · Onsite	San Francisco or New York City Onsite	Feb 10, 2025
Python OSS Engineer Full Time · $115K-$155K · 5+ YOE San Francisco or Boston · Onsite	San Francisco or Boston Onsite	Feb 10, 2025

Activities	ai application frameworksai observability softwarecloud deployment platformsllm orchestration toolsagentic workflow management
Headquarters	US
Industries	Artificial IntelligenceSoftware
Name	LangChain
Employees	230
Type	Private
Tagline	Tools for building and deploying production-ready AI agents.
Founded	2,022
Website	langchain.com
Latest Funding Round	Series B
Latest Funding Year	2,025
Latest Funding Amount	125,000,000
Latest Investors	IVP

LangChain

About LangChain