Senior Design Systems Engineer: UI Library & Accessibility

LangChain; New York (NY); On-site; USD 170,000 - 195,000; Full time

Benefits offered by this job

Medical, dental, and vision coverage

401(k) plan

Meals on in-office days

Job summary

LangChain is building the infrastructure that powers the next generation of AI applications. We’re seeking a Design Systems Engineer to help build, own, and evolve LangChain’s component library—the foundation that frontend teams rely on to ship fast with quality and consistency.

You’ll collaborate with designers and product engineers, turn design intent into robust, reusable UI components, and contribute to tooling, testing, and accessibility initiatives across the product.

Qualifications

• Strong experience building modular, composable, and well-documented component libraries and/or design systems.
• Deep knowledge of React, TypeScript, HTML, and CSS, 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
• Strong attention to detail and a high bar for craft and genuine passion for accessibility and inclusive design
• Familiarity with testing UI components and visual regression testing

Responsibilities

• Build and own 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

Skills

Design Systems

React

TypeScript

HTML/CSS

Accessibility

Collaboration

Testing UI Components

Tools

Storybook

Chromatic

Design tokens pipelines

Job description

LangChain is building the infrastructure that powers the next generation of AI applications. We’re seeking a Design Systems Engineer to help build, own, and evolve LangChain’s component library—the foundation that frontend teams rely on to ship fast with quality and consistency.

You’ll collaborate with designers and product engineers, turn design intent into robust, reusable UI components, and contribute to tooling, testing, and accessibility initiatives across the product.