Python OSS Engineer

Python OSS Engineer

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At Lang Chain, 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, Lang Chain and Lang Graph, see over 90+ million downloads per month and help developers build agents with speed and granular control. Lang Smith offers observability, evaluation, and deployment for rapid iteration, enabling teams to transform LLM systems into dependable production experiences.

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

In person 5 days/week in San Francisco, CA or Boston, MA (SF preferred). We’re looking to add a core maintainer to the Lang Chain team. This person would be responsible for maintaining and improving the Lang Chain Python package.

• Improving the core abstractions and runtime of the langchain and langgraph packages
• Improving documentation
• Answering user questions and resolving issues
• Use langchain to build example applications

• 5+ years of software engineering or applied machine learning background
• Have strong written and oral communication skills, with the ability to explain technical concepts clearly and concisely to both technical and non-technical stakeholders
• Can thrive in a fast‑moving environment. Views unstructured environments as an opportunity to figure out the most impactful work and define the future success of the company
• Are ownership‑mindset. You excel at managing your work efficiently and effectively without the need for close supervision

• 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.
• Annual salary range: $145,000-$195,000 USD

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