Demo

JavaScript Engineer (Open Source Team)

LangChain
York, NY Full Time
POSTED ON 11/29/2025 CLOSED ON 12/27/2025

What are the responsibilities and job description for the JavaScript Engineer (Open Source Team) position at LangChain?

About LangChain

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.

About the role:

We’re looking to add a core maintainer to the LangChain team. This person would be responsible for maintaining and improving the LangChain JavaScript package. In-person in SF preferred.

  • 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

How To Be Successful In This Role

  • 3 years of software engineering or applied machine learning background
  • Have a Software Engineering 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-minded. You excel at managing 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.

$155,000-$195,000 USD

Salary : $155,000 - $195,000

QA Engineer - JavaScript
STAND 8 Technology Consulting -
York, NY
QA Engineer - JavaScript
STAND 8 -
York, NY
QA Engineer - JavaScript
Jobs via Dice -
York, NY

If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a JavaScript Engineer (Open Source Team)?

Sign up to receive alerts about other jobs on the JavaScript Engineer (Open Source Team) career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$123,167 - $152,295
Income Estimation: 
$146,673 - $180,130
Income Estimation: 
$70,239 - $89,209
Income Estimation: 
$88,984 - $115,784
Income Estimation: 
$92,017 - $124,111
Income Estimation: 
$90,707 - $120,959
Income Estimation: 
$91,486 - $118,193
Income Estimation: 
$150,756 - $194,140
Income Estimation: 
$126,569 - $164,899
Income Estimation: 
$208,447 - $279,762
Income Estimation: 
$153,752 - $200,235
Income Estimation: 
$101,441 - $130,752
Income Estimation: 
$111,369 - $141,168
Income Estimation: 
$117,871 - $153,580
Income Estimation: 
$109,939 - $144,341
Income Estimation: 
$114,500 - $144,633
Income Estimation: 
$120,936 - $155,014
Income Estimation: 
$131,745 - $167,716
Income Estimation: 
$144,503 - $184,592
Income Estimation: 
$102,541 - $137,871
Income Estimation: 
$153,752 - $200,235
This job has expired.
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at LangChain

  • LangChain San Francisco, CA
  • About LangChain At LangChain, our mission is to make intelligent agents ubiquitous. We provide the agent engineering platform and open source frameworks de... more
  • 14 Days Ago

  • LangChain York, NY
  • About LangChain At LangChain, our mission is to make intelligent agents ubiquitous. We provide the agent engineering platform and open source frameworks de... more
  • 5 Days Ago

  • LangChain San Francisco, CA
  • About LangChain At LangChain, our mission is to make intelligent agents ubiquitous. We provide the agent engineering platform and open source frameworks de... more
  • 5 Days Ago

  • LangChain San Francisco, CA
  • About LangChain: At LangChain, our mission is to make intelligent agents ubiquitous. We provide the agent engineering platform and open source frameworks d... more
  • 6 Days Ago


Not the job you're looking for? Here are some other JavaScript Engineer (Open Source Team) jobs in the York, NY area that may be a better fit.

  • Maania Consultancy Services New York, NY
  • Job Description Our client is looking for JavaScript Engineer in New York City, Raleigh, Philadelphia across US. If you are interested, please send your up... more
  • 14 Days Ago

  • JavaScript Notes York, NY
  • Company Description We suggest you enter details here. Role Description This is a full-time on-site Researcher role located in New York, NY. The Researcher... more
  • 2 Months Ago

AI Assistant is available now!

Feel free to start your new journey!