Senior Python OSS Engineer — Production AI Systems

LangChain; Cambridge (MA); On-site; USD 160,000 - 225,000; Full time

Benefits offered by this job

Competitive salary

Meaningful equity

Health and dental coverage

Flexible vacation

401(k) plan

Life insurance

Job summary

A leading AI company is seeking a core maintainer for their LangChain team. The ideal candidate will be responsible for maintaining and improving the LangChain Python package, enhancing documentation, and building example applications. Required qualifications include over 5 years of software engineering experience, strong communication skills, and the ability to thrive in fast-paced environments. Competitive compensation between $160,000 and $225,000 is offered.

Qualifications

• 5+ years of software engineering or applied machine learning experience.
• Strong written and oral communication skills to explain technical concepts clearly.
• Ability to thrive in unstructured environments and to identify impactful work.
• Ownership-minded approach to manage work without close supervision.

Responsibilities

• Maintain and improve the LangChain Python package.
• Improve the core abstractions and runtime of LangChain and LangGraph.
• Answer user questions and resolve issues from the community.
• Build example applications demonstrating production AI systems.

Skills

Software engineering experience

Applied machine learning experience

Strong communication skills

Ability to thrive in fast-moving environments

Ownership-minded approach

Job description

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

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.

Today, LangChain, LangGraph, LangSmith, and Agent Builder are used by teams shipping real AI products across startups and large enterprises. Millions of developers trust LangChain to power AI teams at companies like Replit, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, and 35% of the Fortune 500.

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.

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.

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 & Benefits

• 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: $160,000- $225,000