LangChain
AI & Machine LearningDirect Ashby career site

Python OSS Engineer

Pay
$150,000 – $250,000 per year
Location
San Francisco, CA · On-site
Job type
Full-time
Level
Lead / Staff
Experience
5+ years
Listed
23 days ago

Skills & highlights for this role

  • Python
  • LangChain
  • LangGraph
  • API design
  • software architecture

Also useful

  • LLM agents
  • technical documentation

Stated benefits & perks

  • Medical
  • Dental
  • Vision
  • 401k
  • Flexible vacation

About the role

In person 5 days/week in San Francisco, CA or Boston, MA (SF preferred)

We’re looking to add a core maintainer to the LangChain team. This person would be responsible for maintaining and improving the LangChain 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

What You'll Do

  • Improve the core abstractions and runtime of the LangChain and LangGraph packages
  • Improve documentation across the LangChain ecosystem
  • Answer user questions and resolve issues from the community
  • Use LangChain to build example applications that demonstrate how to build production AI systems

What You'll Bring

  • 5+ years of software engineering or applied machine learning experience
  • Strong written and oral communication skills, with the ability to explain technical concepts clearly and concisely to both technical and non-technical stakeholders
  • The ability to thrive in a fast-moving environment and view unstructured environments as an opportunity to identify impactful work and define the future success of the company
  • An ownership-minded approach to work, with the ability to manage your work efficiently and effectively without the need for close supervision

Compensation

  • Annual salary range: $150,000- $250,000

Compensation Philosophy

We offer competitive compensation that includes base salary, variable compensation for relevant roles, meaningful equity, benefits, and perks.

We are hiring for this role across a range of scope, and the compensation band reflects that. Your offer depends on what we learn about your impact, craft, leadership, and communication during the interview process. We will tell you early where you’re tracking and talk comp with you before offer stage. Team members in the EU, UK, and APAC receive locally competitive benefits aligned with regional norms and regulations.

Benefits

Benefits include medical, dental, and vision coverage, flexible vacation, a 401(k) plan, meals on in-office days in the US and more.

About US

At LangChain, our mission is to make intelligent agents ubiquitous. We build the foundation for agent engineering in the real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale.

With $125M raised at Series B from IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we’re at a stage where we’re continuing to develop new products, growth is accelerating, and all team members have meaningful impact on what we build and how we work together. LangChain is a place where your contributions can shape how this technology shows up in the real world.

Today, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. We have 100M+ monthly open source downloads, 6,000+ active LangSmith customers, and 5 of the Fortune 10 use LangSmith in production (+ 35% of the Fortune 500 overall), including teams at Klarna, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, LinkedIn, Monday.com, Nvidia, and Bridgewater.

About the Team

The Python Open Source team maintains and evolves the core LangChain Python ecosystem used by millions of developers worldwide. We focus on building reliable, well-designed abstractions for developing AI agents and integrating them with real-world tools and systems. The team works closely with the open-source community, incorporating feedback and contributions while ensuring the core libraries remain stable, scalable, and production-ready. Our work defines the developer experience for building AI applications with Python.

Read the original posting

From LangChain's careers page, first listed on Rolev.ai on October 17, 2026. Rolev.ai is not the employer.

How Rolev.ai helps with this application

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Common questions

What is the salary for the Python OSS Engineer role at LangChain?

The Python OSS Engineer posting at LangChain states compensation of $150,000 – $250,000 per year. It is listed as a full-time position. Final pay may depend on location, experience, and interview evaluation on LangChain's official career site.

Where is the Python OSS Engineer job at LangChain located?

This Python OSS Engineer position at LangChain is located in San Francisco, CA (On-site). Always check LangChain's application page for specific state eligibility or relocation policies.

What qualifications are required for Python OSS Engineer at LangChain?

For the Python OSS Engineer role, LangChain highlights 5+ years of relevant experience; experience with Python, LangChain, LangGraph, API design, software architecture. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.

How do I apply for the Python OSS Engineer position at LangChain?

This listing links directly to LangChain's Ashby application page. You can apply directly on LangChain's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Ashby application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.