LangChain
Senior Frontend Platform Engineer, Design Systems
$180K–$240K
Remote - US +2 · Remote · Senior · Full-time · Posted Aug 22, 2026
- Location
- Remote - US
Boston, MA
New York, NY
About the job
Build and evolve LangChain’s reusable frontend component library and tooling to support consistent, accessible, high-quality UI across its products.
What you'll do
- Design and implement reusable React components in collaboration with designers.
- Develop design-system tooling and workflows for theming, tokens, versioning, testing, and component discovery.
- Improve component-library build performance, bundling, package versioning, and UI testing workflows.
What they ask for
- Extensive experience building modular, composable, well-documented component libraries and/or design systems.
- Deep knowledge of React, TypeScript, HTML, and CSS.
- Experience collaborating closely with designers and non-engineering partners.
- Attention to detail and passion for accessibility and inclusive design.
Nice to have
- Familiarity with styling approaches such as CSS Modules, CSS-in-JS, Tailwind, or Sass, and design-system tooling such as Storybook, Chromatic, or tokens pipelines.
- Familiarity with UI component testing and visual regression testing.
Pay
$180,000 - $240,000 (base salary)
Tools
React, TypeScript, HTML, CSS, CSS Modules, CSS-in-JS, Tailwind, Sass
Model-written summary · the original posting is authoritative