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Senior Fullstack Engineer, AI Observability & Evals Platform (SF)
LangChainSan Francisco, CA · full time · Senior
$175,000 – $240,000
Listed on LangChain’s own careers site. You apply with them directly — we never stand between you and the employer.
What this role is
LangChain is hiring a senior engineer to build and scale LangSmith, their observability and evaluation platform for AI agents. This role suits someone with 5+ years of fullstack experience who can lead technical direction, mentor teammates, and work across Go, Python, and TypeScript to ship features that enterprise customers depend on.
Our summary, not LangChain’s wording. The full posting is on their site.
Skills this role names
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What they ask for
Required
- 5+ years of software engineering on complex platform products
- Fullstack experience with Go or Python backend and React + TypeScript frontend
- Strong understanding of PostgreSQL and Redis
- Experience designing and scaling APIs in high-performance, data-intensive applications
- Shipping velocity and iteration based on user feedback
- Strong communication and stakeholder collaboration
- Ownership mindset
Nice to have
- Experience with AI/LLM-powered applications
- Experience with developer tools
- Experience with observability platforms