Fermi AI - Senior Frontend Engineer (React)

• Interactive infinite canvas with drawing, equation detection, and spatial analysis • Interactive infinite canvas • Teacher & educator tools — homework assignment, student progress tracking, classroom management, and analytics dashboards • Teacher & educator tools • Student journeys — onboarding flows, subject/topic navigation, question attempts, mock tests, and performance history • Student journeys • Cross-platform mobile apps — iOS & Android via Capacitor with native authentication (Google, Apple sign-in) • Cross-platform mobile apps • Complex state management — 13+ Redux slices orchestrating canvas, sessions, questions, notifications, classrooms, and more • Complex state management • Notification system, role-based access control, and multi-tenant organization support • Performance-critical systems — low-latency audio worklets, debounced syncing, rate-limited AI feedback • Our Stack • Next.js 16 (App Router) + React 19 + TypeScript • Next.js 16 • React 19 • TypeScript • Redux Toolkit for complex state management • Redux Toolkit • Socket.IO for real-time bidirectional AI communication • Web Audio API with custom AudioWorklets • Web Audio API • Capacitor for native iOS & Android builds • Capacitor • Jest + React Testing Library (95% coverage — we don't ship broken code) • Jest + React Testing Library • Sentry + Amplitude for monitoring & analytics • Sentry + Amplitude • 5+ years of professional front-end development — no shortcuts • 5+ years • Deep expertise in React, TypeScript, and Next.js • React, TypeScript, and Next.js • Hands-on experience with real-time applications (WebSockets, Socket.IO) • real-time applications • Strong state management skills (Redux, Zustand, or equivalent) • state management • Experience building complex, multi-role platforms — dashboards, workflows, and data-rich UIs • complex, multi-role platforms • A testing mindset — you write tests because you care about what you ship • Mobile-first thinking — responsive design and touch interactions are second nature • Experience with canvas/drawing libraries (tldraw or similar) • canvas/drawing libraries • Background in EdTech or AI-powered products • EdTech • Web Audio API or media streaming experience • Web Audio API • Capacitor / hybrid mobile development • Capacitor • Experience with role-based access control and multi-tenant architectures • role-based access control