Responsibilities:
- Ship complex, real-time trading features using React 18+ with TypeScript (hooks, context, concurrent features)
- Design robust client data flows with Redux Toolkit + Redux-Saga and React Query for caching and real-time sync
- Integrate REST and WebSocket endpoints for live trading feeds, order books, balances, and notifications
- Build responsive UIs with Tailwind CSS and Styled Components ensuring cross-device, mobile-first UX
- Deliver rich visualizations (candlesticks, P&L, live dashboards) using ApexCharts/React-ApexCharts
- Optimize front-end performance through code-splitting, lazy loading, virtual scrolling, and bundle optimization
- Apply scalable architecture patterns (feature-based modules, SOLID principles) for data-heavy applications
- Implement secure authentication flows (JWT, OAuth, 2FA) and handle exchange API keys safely
- Contribute to internationalization with i18next (13+ languages, including RTL support)
- Raise code quality through reviews, documentation, and mentoring team members
Technical Requirements:
- Mid-Level: 3-5 years building React/TypeScript products in production
- Senior-Level: 5+ years with evidence of architectural impact and technical leadership
- Strong proficiency in React 18+, TypeScript, and modern JavaScript (ES2020+)
- Hands-on experience with Redux Toolkit, Redux-Saga, React Query in production environments
- Real-time client integrations (WebSockets), REST API design, and efficient large dataset handling
- Charting experience with ApexCharts or comparable libraries (zoom, overlays, live updates)
- Performance optimization skills: measuring, profiling, and fixing bottlenecks
- Security awareness for authentication and key management
- Bonus: Experience with CCXT or exchange libraries, trading/fintech background, Jest + React Testing Library, CI/CD, monitoring tools (Sentry, Datadog), PWA features, Web3/wallet integrations