Senior Front-End Engineer, React & Design System

Photon

Sunnyvale (CA)

On-site

USD 120,000 - 180,000

Full time

14 hours ago

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Job summary

Photon is seeking a senior Front-End Engineer to build fast, accessible, and consistent user experiences. You will work with designers and backend teams to deliver polished interfaces built on a shared design system.

You will implement responsive UI with HTML, CSS, and React, contribute to performance improvements against Core Web Vitals, and help evolve our component library and build tooling with Node.js. We value code quality, testability, and collaborative QA reviews.

Qualifications

5+ years of front-end development experience.
Production experience with React; working knowledge of Angular.
Experience with API integration, CORS, and Web Sockets.
Knowledge of web performance and Core Web Vitals.
Experience with design systems or component libraries.

Responsibilities

Build and maintain responsive web interfaces using HTML, CSS, and React (Angular experience is also valued).
Integrate front-end applications with back-end services and REST APIs, handling CORS and authentication flows correctly.
Optimize performance and meet Core Web Vitals targets (LCP, INP, CLS).
Contribute to and consume the company design system, building reusable, welldocumented components.
Use Node.js tooling for builds, bundling, and lightweight services.
Participate in code reviews and collaborate with QA on testability.