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Senior Frontend Platform Engineer, Design Systems

Langchain 🇺🇸 Cambridge, Massachusetts, United States

$170,000 - $195,000 Full-time Senior

You will build and own LangChain's component library by designing reusable, accessible React components. Additionally, you will partner with designers and engineers to develop UI quality systems, tooling, and workflows for theming and testing.

Responsibilities

  • You will build and own LangChain's component library by designing reusable, accessible React components. Additionally, you will partner with designers and engineers to develop UI quality systems, tooling, and workflows for theming and testing.

Requirements

  • The role requires strong experience in building modular component libraries and deep knowledge of React, TypeScript, HTML, and CSS. Candidates must demonstrate a high bar for craft, attention to detail, and a passion for accessibility and inclusive design.

Benefits

  • Medical coverage
  • Dental coverage
  • Vision coverage
  • Flexible vacation
  • 401(k) plan
  • Life insurance
  • Equity
  • Meals on in-office days

Key Skills

React TypeScript HTML CSS Component library development Design system creation Accessibility (a11y) Inclusive design Theming Testing frameworks (e.g., Jest, React Testing Library) Storybook UI quality tooling Collaboration with designers Collaboration with engineers Code review Modular architecture Performance optimization Git version control Continuous integration Agile development

About Langchain

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. What began as widely adopted open-source tools has grown into a platform for building, evaluating, deploying, and operating agents at scale. LangChain provides the agent engineering platform and open source frameworks developers need to ship reliable agents fast. LangSmith offers observability, evaluation, and deployment for rapid iteration. Our open source frameworks, LangGraph, LangChain, and Deep Agents, help developers build agents with speed and granular control. LangSmith is trusted by leading AI teams at Zip, Vanta, Klarna, Workday, Linkedin, Cloudflare, and more.

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