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Senior Fullstack Engineer

USA💼 Full-time🗓 2026-09-12 → 2026-09-26

Core

Lead technical architecture and implementation of key features for LangSmith, a developer tools and observability platform.

Role type

Senior Fullstack Engineer (Platform/Developer Tools)

Builds

LangSmith product features across Go, Python, and TypeScript stack

Domain

Developer tools, observability, AI/LLM-powered applications

Deliverable

production ML models | product features

Required skills

Go, Python, TypeScript, React, Postgres, Redis, API design, scaling high-performance systems, clean code practices, unit testing

Preferred skills

Experience with AI/LLM applications, developer tools, or observability platforms

Responsibilities

Lead technical architecture and implementation of key product features; Collaborate with product and design teams to iterate on new features; Drive aggressive project timelines while maintaining high engineering standards; Write clean, maintainable, and well-tested code; Engage with enterprise customers, developer end-users, and cross-functional internal stakeholders

Seniority

Senior, hands-on IC

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