Frontend Developer

Manpower, Inc.; Foster City (CA); Presencial; USD 110.000 - 116.000; Jornada completa

Descripción de la vacante

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.

Formación

• 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.

Responsabilidades

• 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.

Conocimientos

Frontend development

React expertise

UI/UX craft

CSS animations

Testing & CI

Herramientas

Vitest

Testing Library

Playwright

Storybook

Descripción del empleo

Job Title

Frontend Developer (React)

Location

Foster City, CA

Pay Range

$80-$84/hour + Benefits

What's the Job?

• Build and maintain React components—from primitives to complex composite components—while keeping the component library consistent and scalable.
• Implement designs to spec from Figma with precision, including interaction states, transitions, responsive behavior, and light/dark mode support.
• Contribute to Storybook by writing and maintaining stories, keeping documentation current, and improving usability for engineers who consume the library.
• Write component tests with Vitest and Testing Library, and help ensure end-to-end and visual regression coverage with Playwright running in CI.
• Build and strengthen the AI harness (prompts, rules, linting, type constraints, and review workflow) so AI-generated code matches style and conventions at scale.

What's Needed?

• 4+ years of frontend development experience, including significant time working on a component library or design system.
• Deep React expertise, including composition patterns, hooks, performance, and the discipline of designing component APIs other engineers can rely on.
• Genuine UI craft: you notice when easing curves are wrong, when focus states are missing, and when spacing is off—then you fix it.
• Strong CSS experience, including animation and transitions, plus comfort implementing design tokens as a single source of truth across platforms.
• Testing and CI experience: component testing with Vitest and Testing Library, plus Playwright for end-to-end and snapshot/visual regression coverage.

What's in it for me?

• Work on a component library that powers every application, where your attention to detail directly improves product quality.
• Collaborate closely with designers and engineers to review specs early, flag issues, and build the best solution—not just the fastest one.
• Use AI heavily in your workflow, with the responsibility to review every line and build guardrails that keep output consistent.
• Develop motion, animation, and WebGL experiences when the product calls for it, including 3D components.
• Strengthen engineering confidence through thorough testing: unit/component, end-to-end, and visual regression coverage in CI.

About ManpowerGroup, Parent Company of: Manpower, Experis, Talent Solutions, and Jefferson Wells

ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing, and managing the talent that enables them to win. We develop innovative solutions for hundreds of thousands of organizations every year, providing them with skilled talent while finding meaningful, sustainable employment for millions of people across a wide range of industries and skills. Our expert family of brands – Manpower, Experis, Talent Solutions, and Jefferson Wells – creates substantial value for candidates and clients across more than 75 countries and territories and has done so for over 70 years. We are recognized consistently for our diversity - as a best place to work for Women, Inclusion, Equality and Disability and in 2023 ManpowerGroup was named one of the World's Most Ethical Companies for the 14th year - all confirming our position as the brand of choice for in-demand talent.