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At LangChain, our mission is to make intelligent agents ubiquitous. We help developers build mission-critical AI applications across the entire agent development lifecycle. Our open source frameworks — LangChain and LangGraph — see over 70+ million downloads per month. Developers rely on LangChain for composable integrations and LangGraph for controllable agent orchestration. Our commercial agent platform, consisting of LangSmith and LangGraph Platform, enables teams to build, test, run, and manage agents at scale across their organization.
Founded in 2023, LangChain powers top engineering teams at companies like Replit, Lovable, Clay, Klarna, LinkedIn, and more.
About the role
In person 5 days/week in San Francisco
We're looking for a Senior Full Stack Engineer who will grow into a Tech Lead role for LangSmith, our rapidly-growing commercial product. In this role, you'll have the opportunity to shape the technical direction of our platform while working closely with customers and internal stakeholders.
- Lead the technical architecture and implementation of key product features for LangSmith, working across our entire Go, Python, and Typescript stack.
- 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
How to be successful in this role
- 7+ years of experience in software engineering
- Strong knowledge in at least one of Go or Python, strong knowledge of React + Typescript
- Strong understanding of database systems, particularly Postgres and Redis
- Experience designing and scaling APIs, preferably in a high-performance, data-intensive application
- A “get stuff done” attitude—comfortable shipping fast and iterating based on user feedback
- Strong communication skills—able to work with internal stakeholders and engage directly with customers
- Strong ownership mindset
- Bonus: Experience with AI/LLM-powered applications, developer tools, or observability platforms
- Competitive salary and equity stake for role and stage of company. Commensurate with experience.
- Annual salary range: $165,000-$195,000 USD for Senior Engineers
Seniority level
Seniority level
Mid-Senior level
Employment type
Employment type
Full-time
Job function
Industries
Technology, Information and Internet
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