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Senior Fullstack Engineer for AI Observability & Evals Platform

LangChainSan Francisco, CA
On-site Full-time $175K/yr - $225K/yr

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Experience Level

Senior

Qualifications

7+ years of experience in software engineering, specifically with complex platform products. Proficiency in fullstack engineering, particularly with Go or Python for back-end development and React + TypeScript for front-end. Strong grasp of database systems, especially Postgres and Redis.

About the job

About Us:

LangChain is dedicated to making intelligent agents commonplace. We are pioneering the foundations of agent engineering in the real world, empowering developers to transition from prototypes to production-ready AI agents that teams can depend on. Initially known for our widely embraced open-source tools, we have expanded to provide a comprehensive platform for constructing, assessing, deploying, and managing agents at scale.

Our products, including LangChain, LangGraph, LangSmith, and Agent Builder, are utilized by teams delivering genuine AI solutions in both startup environments and large corporations. Millions of developers trust our technology to elevate AI initiatives at organizations such as Replit, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, and 35% of the Fortune 500.

With $125M raised in our Series B funding from IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we are poised for continued product development and accelerating growth, where each team member plays a significant role in shaping our technology and collaborative culture.

About the Role:

On-site 5 days a week in San Francisco

We are seeking a Senior Fullstack Engineer for our commercial product, LangSmith, which serves as an observability and evaluation platform. In this role, you will have the chance to influence the technical direction of our platform while engaging with enterprise clients, developer end-users, and internal stakeholders.

  • Lead the technical architecture and implementation of essential product features for LangSmith, utilizing our entire stack of Go, Python, and TypeScript.

  • Work closely with product and design teams to iterate and refine new features.

  • Mentor and support junior team members, driving ambitious project timelines while upholding high engineering standards.

  • Set an example by producing clean, maintainable, and thoroughly tested code.

About LangChain

LangChain is at the forefront of AI technology, dedicated to creating innovative solutions that enable the widespread use of intelligent agents. Our platform is built on a foundation of robust open-source tools, which has allowed us to evolve into a critical resource for developers aiming to build, evaluate, and deploy AI agents efficiently.

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