Company profile

LangChain Tech Stack

Agent engineering platform and open-source frameworks for production AI agents

Technology, Information and Internet San Francisco, CA 201–500 employees Privately Held

LangChain pairs open-source agent frameworks (LangGraph, LangChain) with LangSmith, a commercial platform for agent observability, evaluation and deployment. Its stack of ClickHouse, Go, Rust and Kubernetes across AWS, GCP and Azure points to a high-volume telemetry business. Hiring is accelerating and skews senior, split between engineering and sales, which signals a push from developer adoption toward enterprise revenue backed by solutions-led pre-sales.

Tech Stack 49 technologies

Core StackPython TypeScript JavaScript Go React PostgreSQL Redis ClickHouse AWS Confluence Vite Webpack Kubernetes Salesforce Rust Rippling Terraform Helm Docker Google Tag Manager LangGraph LangSmith GCP Azure Fleet Babel npm LinkedIn Sales Navigator GCS Azure Blob Storage+16 more

AdoptingLangSmith LangGraph Ironclad Fleet

What LangChain Is BuildingChallenges and projects from their job posts

◆Challenges

Scaling reliable AI infrastructure and observability platform
Deploying and operating agents reliably at scale
Handling high-volume observability data
Securing pre-sales technical wins
Customer adoption and retention
Debugging production issues

▲Active Projects

Building an enterprise go-to-market motion
LangSmith observability platform
Reusable PoC assets for pre-sales
Co-architecting production AI agents with customers
Internal agent tools and issue-triage diagnostics
AI-native onboarding and support agents

Hiring Activity

Accelerating140 roles · 45 in 30d

Department

Engineering

Sales

Support

Marketing

Security

Legal

Product

Seniority

Senior

Mid

Manager

Director

Lead

Junior

Principal

Notable leadership hires: Enterprise Sales Director

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About LangChain

LangChain builds tooling that helps developers take AI agents from prototype to production. Its open-source frameworks, LangGraph, LangChain and Deep Agents, cover agent construction. Its commercial product, LangSmith, provides observability, evaluation and deployment. The company is privately held, headquartered in San Francisco, and has 201–500 employees. It hires across the United States, United Kingdom, Canada, the Netherlands and Singapore.

HeadquartersSan Francisco, CA

Company Size201–500 employees

Hiring MarketsUnited States, United Kingdom, Canada, Netherlands, Singapore

Frequently Asked Questions

What tech stack does LangChain use?

LangChain builds with Python, TypeScript, Go and Rust, plus React and Vite. Data runs on PostgreSQL, Redis and ClickHouse. Infrastructure uses Kubernetes, Terraform, Helm and Docker across AWS, GCP and Azure.

Is LangChain hiring sales roles?

Yes. Hiring is accelerating, with sales the second-largest area after engineering. It includes an Enterprise Sales Director role and pre-sales work on proofs of concept.

What countries does LangChain hire in?

LangChain hires in the United States, United Kingdom, Canada, the Netherlands and Singapore. Its headquarters is in San Francisco, CA.

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How this profile is built

LangChain's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.