React Engineer
Summary
Senior React engineer (10+ yrs experience) building data-heavy front-end applications in New Jersey using React 18, TypeScript, micro-frontends (Webpack Module Federation), modern state management, and testing/CI tooling, with real-time and AI streaming UI work plus some Node.js backend touches.
Job Description:
The Profile
- 10+ years front-end / full-stack;
8+ years hands-on React.
- Works independently with light direction;
product-minded;
banking / financial services a plus.
- 5+ years leading and mentoring developers.
Must-Haves
- React 18 (hooks, modern patterns) + strong TypeScript (ES2020+, generics).
- Webpack 5 Module Federation / micro-frontends — wiring host shells and remote MFEs. (Vite / Next.Js / other modern build setups count too.)
- State management (valtio / Zustand / Redux / Recoil) and react-router 6.
- API & data fetching — REST (or GraphQL), and server-state libraries (React Query / SWR), with proper loading / error / cancellation handling.
- Design systems (Mantine / MUI / Ant Design or similar) and HTML, CSS, SCSS/Sass;
responsive, accessible UI (WCAG / ARIA).
- Real-time UI via Server-Sent Events (SSE) / WebSockets (e.G., LLM token streaming).
- Data-heavy dashboards — building performant, data-dense UIs (tables, grids, charts) that handle large datasets smoothly.
- Testing: Jest + React Testing Library and E2E (Cypress / Playwright).
- Git workflow (branching, PRs, code review), CI/CD, and performance / bundle optimization (code splitting, lazy loading, virtualization).
- Familiarity with SSR / SSG (Next.Js or similar) is a plus.
- Node.Js
- MongoDB / Mongoose, Postgres, Kafka (KafkaJS), JWT auth, OpenAPI / Swagger.
Strong Plus — AI Interface Skills Priority: building chat / assistant UIs that stream responses token-by-token, code safely (XSS-safe), and visualize agentic tool-use workflows.