Senior Frontend Platform Engineer, Design Systems

Responsibilities

• Build out LangChain’s component library
• Design and implement reusable, composable React components that are flexible, accessible, and production-ready
• Partner closely with designers to translate design systems, tokens, and interaction patterns into code
• Build reliable UI quality systems
• Develop design system tooling and improve workflows around theming, tokens, versioning, testing, and component discovery (e.g. Storybook)
• Make thoughtful architectural decisions that enable accessibility, performance, consistency, and maintainability across LangChain’s UI stack
• Improve UI build and test workflows
• Optimize build performance, bundling strategy, and package versioning for the component library
• Maintain tooling for testing, dependency management of the UI app

Languages