Fullstack Software Engineering Manager, Observability & Evals Platform

About LangChain

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

At LangChain, our mission is to make intelligent agents ubiquitous. We provide the agent engineering platform and open source frameworks developers need to ship reliable agents fast.

Our open source frameworks, LangChain and LangGraph, see over 90+ million downloads per month and help developers build agents with speed and granular control. LangSmith offers observability, evaluation, and deployment for rapid iteration, enabling teams to transform LLM systems into dependable production experiences.

LangChain is trusted by millions of developers worldwide and powers AI teams at companies like Replit, Clay, Cloudflare, Harvey, Rippling, Vanta, Workday, and more.

What you will do

Lead the technical architecture and implementation of key product features for LangSmith working across our entire Go, Python, and Typescript stack

Partner with product and design teams to build new features

Drive aggressive project timelines while ensuring high engineering standards are being met.

Lead by example in writing clean, maintainable, and well-tested code

Work closely with customers to understand their needs and shape the product direction

How to be successful in this role

Extensive experience i n software engineering ideally working on fullstack, complex platform products

Prior experience building and managing a team of engineers

Strong backend experience with Go and / or Python

Strong frontend experience with React + Typescript

Good understanding of database systems, particularly Postgres and Redis

Experience designing and scaling APIs ideally for high-throughput or data-intensive systems

A “get stuff done” attitude—comfortable shipping fast and iterating based on user feedback

Strong communication skills—able to collaborate with internal stakeholders and engage directly with customers

Ownership mindset with a bias for action and a focus on delivering impact

Bonus : Experience building AI / LLM-powered applications, developer tools, and / or observability platforms

Compensation

We offer competitive compensation that includes base salary, meaningful equity, and benefits such as health and dental coverage, flexible vacation, a 401(k) plan, and life insurance. Actual compensation will vary based on role, level, and location. For team members in the EU and UK, we provide locally competitive benefits aligned with regional norms and regulations. Salary range : $200,000 - $235,000

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