Radiant
Senior Software Engineer, Frontend
$158K–$219K
El Segundo, CA · On-site · Senior · Full-time · Posted Oct 2, 2026
- Experience
- 5+ years of professional experience in web development, frontend development, and/or desktop GUI development.
- Education
- Bachelor's degree in Computer Science, Engineering, Physics, or a related technical field.
- Visa sponsorship
- Position involves access to technology subject to U.S. export controls; any offer is contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
About the job
Own and build frontend features for Radiant’s internal telemetry and fleet management platform, supporting monitoring, analysis, and configuration of its portable nuclear reactors.
What you'll do
- Own critical frontend components in the React, TypeScript, and Vite codebase; build reliable, performant data review and analysis systems.
- Develop pages for complex device configuration and telemetry systems.
- Collaborate with the Mission Software team and stakeholders across the company.
What they ask for
- Bachelor's degree in Computer Science, Engineering, Physics, or a related technical field.
- 5+ years of professional experience in web development, frontend development, and/or desktop GUI development.
- Proficient with React and TypeScript for SPAs, and testing with Vitest and Playwright.
- Experience building performant, complex, mission-critical systems using technologies such as WebSockets, WebRTC, or SSE.
Nice to have
- Experience with TanStack Query and React Router, Pixi.js and WebGPU, or Yjs or similar CRDT.
- HMI or dashboard design experience; hands-on hardware experience working closely with hardware engineers.
Pay
$158,000 – $219,450 USD base salary
Tools
React, TypeScript, Vite, Vitest, Playwright, WebSockets, WebRTC, SSE
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