Senior Frontend Platform Engineer, Design Systems – LangChain – Jobs in Cambridge, MA | OpenJobs AI

Job Details

Overview Company

Senior Frontend Platform Engineer, Design Systems

$170k/y-$195k/y

LangChain

2 days ago

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OnsiteFull-timeMid

Summary

LangChain is seeking a Senior Frontend Platform Engineer, Design Systems to join their team in Cambridge, MA. The role involves building and evolving LangChain's component library to support the development of AI applications.

About the Role

As a Senior Frontend Platform Engineer, you will be responsible for designing and implementing reusable, composable React components, collaborating closely with designers and product engineers to ensure high-quality UI foundations. You will also develop design system tooling, improve workflows, and make architectural decisions that enhance accessibility and performance across LangChain's UI stack.

About You

Required:

Strong experience building modular, composable, and well-documented component libraries and/or design systems.
Deep knowledge of React, TypeScript, HTML, and CSS.

Preferred:

Familiarity with styling approaches (CSS Modules, CSS-in-JS, Tailwind, Sass, etc.) and design system toolings (Storybook, Chromatic, tokens pipelines, etc.).
Experience collaborating closely with designers and non-engineering partners.

Benefits

Competitive compensation including base salary and meaningful equity.
Medical, dental, and vision coverage.
Flexible vacation and a 401(k) plan.
Life insurance.

LangChain

LangChain is the platform for building reliable agents. Our products power top engineering teams — from fast-growing startups like Lovable, Mercor, and Clay to global brands including AT&T, Home Depot, and Klarna. LangGraph is a low-level orchestration framework for building controllable agents and long-running workflows. It’s used in production by teams at Replit, Uber, LinkedIn, GitLab, and more. LangSmith offers unified evaluation and monitoring to help developers debug, evaluate, and improve their agents at scale. LangChain provides hundreds of integrations and composable components, making it easy to connect with the latest models, tools, and databases — with minimal engineering overhead. Together, these tools help teams build, deploy, and manage enterprise-grade agents, faster.

Cambridge, MA