Senior Fullstack Engineer, AI Observability & Evals Platform (SF)

The role

You will lead the technical architecture and implementation of key product features for LangSmith. You will work across a Go, Python, and Typescript stack and collaborate with product, design, and enterprise customers.

What you will do

• Lead the technical architecture and implementation of key product features for LangSmith
• Collaborate closely with product and design teams to iterate on new features
• Mentor and guide more junior members of the team
• Drive aggressive project timelines while ensuring high engineering standards are being met
• Lead by example in writing clean, maintainable, and well-tested code

Required qualifications

• 5+ years of experience in software engineering working on complex platform products
• Fullstack engineering experience with Go or Python on the backend and React + Typescript on the frontend
• Strong understanding of database systems, particularly Postgres and Redis
• Experience designing and scaling APIs
• A get stuff done attitude
• Strong communicator with the ability to collaborate closely with various internal stakeholders and engage directly with our top-tier customers
• Strong ownership mindset

Nice to have

• Experience with AI/LLM-powered applications
• Experience with developer tools
• Experience with observability platforms

Benefits

• medical, dental, and vision coverage
• flexible vacation
• 401(k) plan
• meals on in-office days in the US

About the company

LangChain builds the foundation for agent engineering, offering open-source tools and a platform for building, evaluating, deploying, and operating agents at scale.