Senior Fullstack Engineer - AI Observability & Evals

LangChain; United States; Presencial; USD 180.000 - 240.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Medical, dental, vision

401(k)

Equity

Flexible vacation

In-office meals in US

Descripción de la vacante

LangChain is seeking a Senior Fullstack Engineer for LangSmith, our observability and evaluation platform. You will shape the technical direction across Go/Python backend and React/TypeScript frontend, working with enterprise customers and internal teams.

We value at least 5 years of software engineering experience on complex platform products, API design, and high-performance data apps. The role offers a competitive USD salary and meaningful equity, with in-office days in the US.

Formación

• 5+ years of software engineering on complex platform products.
• Backend in Go or Python with frontend in React + TypeScript.
• Strong understanding of database systems (Postgres, Redis).
• Experience designing and scaling APIs in high-performance data apps.

Responsabilidades

• Lead the technical architecture and implementation of key LangSmith features across Go, Python, and TypeScript.
• Collaborate with product and design teams to iterate on new features.
• Mentor junior engineers and drive timelines while maintaining high standards.
• Write clean, maintainable, well-tested code and ship rapidly.

Conocimientos

5+ years experience

Go backend

Python backend

React frontend

TypeScript

API design

Herramientas

PostgreSQL

Redis

Descripción del empleo

LangChain is seeking a Senior Fullstack Engineer for LangSmith, our observability and evaluation platform. You will shape the technical direction across Go/Python backend and React/TypeScript frontend, working with enterprise customers and internal teams.

We value at least 5 years of software engineering experience on complex platform products, API design, and high-performance data apps. The role offers a competitive USD salary and meaningful equity, with in-office days in the US.