Frontend Engineer (React.js / Next.js)
Sundayy
full-remoteleadpermanentfrontend United States Yesterday via LinkedIn
200,000 - 300,000 USD/annual
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ReactNext.jsTypeScriptWebSocketsReal-time DataFront-End PerformanceTrading PlatformsCrypto TradingDeFiMobile Optimization
About the role
Role Overview
Senior/Staff Front-End Engineer to help build a new high-performance, web-based trading terminal. You will translate complex trading functionality into a seamless, fast, user-centric React/Next.js application with real-time capabilities.
Responsibilities
- Develop and maintain a responsive, user-centric web application using React/Next.js and TypeScript
- Implement performance and usability best practices, with strong attention to mobile optimization
- Integrate and manage real-time data streams using WebSockets to support trading features
- Collaborate with back-end/full-stack engineers to ensure smooth front-end/back-end integration
- Solve complex technical problems and propose effective, innovative improvements to user experience
- Maintain high code quality with clean, maintainable, well-documented code
- Contribute to technical decision-making (stack and design choices)
Requirements
- 5+ years of front-end development experience
- Strong focus on React/Next.js and TypeScript
- Proven experience building frontend components for trading platforms/exchanges
- Experience acting as a key decision-maker for front-end architecture/components
- Ability to work independently and proactively manage tasks and projects
- Expertise building fast, dynamic, optimized web interfaces
- Comfort handling real-time data and WebSocket management
- Strong problem-solving skills
- Genuine interest in cryptocurrency, DeFi, and trading trends
Nice to Have
- Experience influencing or leading major front-end platform components (e.g., terminal/critical UX flows)
Benefits
- Competitive base salary: $200,000–$300,000
- Performance-based bonuses
- Remote working flexibility with a flexible schedule
- Collaborative/inclusive environment and access to cutting-edge trading technology
About Sundayy
Sundayy is hiring for a client in the cryptocurrency trading technology sector. The client operates a high-performance trading platform that supports advanced on-chain trading features such as DCA, limit orders, sniping, and wallet copy-trading, serving tens of thousands of active users and handling massive daily trading volume.
Scraped 6/18/2026