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Latest Fullstack Engineering jobs at LangChain

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LangChain

Principle Software Engineer, AI Observability & Evals Platform

LangChainCambridge, MA +3

Leads technical direction for AI observability platform, building full-stack features in Go/Python/TypeScript, driving architecture, mentoring engineers, and ensuring production reliability at scale. Requires 10+ years backend/fullstack experience with high-throughput systems.

230k – 270k/yr
On-site10+ YOEFullstack Engineering
LangChain

Senior Fullstack Engineer, Growth & Monetization

LangChainNew York, NY +2

Senior fullstack engineer building growth and monetization systems including onboarding, experimentation, billing, and self-serve expansion features. Works across React, TypeScript, Python, and Go in a high-impact 0→1 role.

175k – 240k/yr
On-site5+ YOEFullstack Engineering
LangChain

FullStack Engineer, Observability & Evals Platform (LangSmith)

LangChainSan Francisco, CA +2

Build features for LangSmith AI observability and evals platform using Go/Python backend and React/TypeScript frontend. Requires 2+ years fullstack experience, database knowledge (Postgres/Redis), and API design skills.

145k – 180k/yr
On-site2+ YOEFullstack Engineering
LangChain

Senior Fullstack Engineer, AI Observability & Evals Platform

LangChainNew York, NY +2

Senior Fullstack Engineer leads architecture and implementation of observability platform features using Go/Python backend and React/TypeScript frontend. Requires 7+ years experience, database expertise (Postgres/Redis), and API scaling skills; onsite in SF with enterprise collaboration.

175k – 225k/yr
On-site7+ YOEFullstack Engineering