Senior Frontend Engineer - React + Design System Expert

Photon; Sunnyvale (CA); On-site; USD 140,000 - 190,000; Full time

Job summary

Photon is hiring Front-End Engineers to build fast, accessible, and consistent user experiences in Sunnyvale. You will collaborate with designers and back-end teams to deliver polished interfaces backed by a shared design system.

Role emphasizes React work (Angular knowledge welcomed), performance optimization for Core Web Vitals, and contributing to reusable components within our design system. Join a team focused on scalable, enterprise-grade digital platforms.

Qualifications

• 5+ years of front-end development experience.
• Production experience with React; working knowledge of Angular.
• Experience with API integration, CORS, and WebSockets.
• Practical knowledge of web performance and Core Web Vitals.
• Experience working within a design system or component library.

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, components.
• Use Node.js tooling for builds, bundling, and lightweight services.
• Participate in code reviews and collaborate with QA on testability.

Skills

Front-end development

Web performance optimization

API integration

Design system experience

Tools

React

Angular

Node.js

Job description

Photon is hiring Front-End Engineers to build fast, accessible, and consistent user experiences in Sunnyvale. You will collaborate with designers and back-end teams to deliver polished interfaces backed by a shared design system.

Role emphasizes React work (Angular knowledge welcomed), performance optimization for Core Web Vitals, and contributing to reusable components within our design system. Join a team focused on scalable, enterprise-grade digital platforms.