CareerPlan

FullStack Engineer

Full-time$145k–$180k2026-10-21 → 2026-11-12
Based in United States

Core

Build new features and functionality for LangSmith, a commercial AI observability and evaluation platform.

Role type

Fullstack Engineer (Go, Python, React/TypeScript)

Builds

LangSmith platform features for enterprise customers and developer end-users

Domain

AI/LLM infrastructure, developer tools, observability

Deliverable

production ML models

Required skills

Go, Python, React, TypeScript, Postgres, Redis, API design, high-performance systems

Preferred skills

AI/LLM-powered applications, developer tools, observability platforms

Responsibilities

Develop and implement key product features across the full stack, collaborate with product and design teams, drive project timelines while maintaining high engineering standards

Seniority

Mid-level (2+ years experience)