Senior Frontend Engineer

About the role

Radiant is building the world’s first mass‑produced portable nuclear microreactors. The Senior Software Engineer will own the frontend of the internal telemetry and fleet‑management platform that monitors and configures these reactors.

Key responsibilities

• Develop and maintain critical frontend components in a modern React + TypeScript + Vite codebase.
• Build performant data‑review and analysis tools, as well as complex device‑configuration pages.
• Collaborate with the Mission Software team and cross‑functional stakeholders to deliver mission‑critical features.

Required profile

• Bachelor’s degree in Computer Science, Engineering, Physics, or a related technical field.
• 5+ years of professional experience in web or desktop GUI development.
• Strong code‑review, debugging, and consensus‑building skills.

Required skills

• React, TypeScript, Vite, Vitest, Playwright.
• WebSockets, WebRTC, Server‑Sent Events (SSE).
• TanStack Query, React Router, Pixi.js, WebGPU, Yjs.
• Rust with Axum, Python with FastAPI.

What we offer

• Substantial equity plan for all full‑time employees.
• Comprehensive medical, dental, vision, and life benefits.
• 8‑week paid parental leave and additional pregnancy leave for CA employees.
• Daily catered lunch, free snacks, flexible PTO and remote‑workday allocation.
• On‑site work at a beautiful El Segundo headquarters near the Pacific Ocean.