Senior React Frontend Engineer – Design System & AI UI

Manpower, Inc.; Foster City (CA); On-site; USD 110,000 - 116,000; Full time

Job summary

ManpowerGroup is seeking a Frontend Developer (React) in Foster City, CA to build and maintain a scalable React component library. You will implement pixel-perfect designs from Figma, ensure accessibility and responsive behavior, and contribute to Storybook by creating stories and documentation.

You will also write tests with Vitest and Testing Library, and support CI-driven end-to-end coverage with Playwright, shaping a design system used across applications.

Qualifications

• 4+ years of frontend development experience, including significant work on a component library or design system.
• Deep React expertise, with thoughtful API design and performance considerations.
• Strong UI craft: attention to easing, focus states, and spacing; fix issues as needed.

Responsibilities

• Build and maintain React components—from primitives to complex composites—keeping the library consistent and scalable.
• Implement designs from Figma with precision, including interactions, responsiveness, and dark/light modes.
• Contribute to Storybook with stories; maintain documentation for engineers using the library.

Skills

Frontend development

React expertise

UI/UX craft

CSS animations

Testing & CI

Tools

Vitest

Testing Library

Playwright

Storybook

Job description

ManpowerGroup is seeking a Frontend Developer (React) in Foster City, CA to build and maintain a scalable React component library. You will implement pixel-perfect designs from Figma, ensure accessibility and responsive behavior, and contribute to Storybook by creating stories and documentation.

You will also write tests with Vitest and Testing Library, and support CI-driven end-to-end coverage with Playwright, shaping a design system used across applications.