Look for profiles with strong trading experience, particularly someone who has presented data to clients and has experience reviewing large datasets related to trade and finance. Javascript/ReactJS Developer Key Responsibilities: Design, develop, and maintain high-performance front-end applications supporting trading, risk, and research workflows. Build responsive, data-intensive UIs using ReactJS, JavaScript (ES6+), HTML/CSS, and the Browser API. Implement real-time data visualization and interaction features optimized for low-latency environments. Integrate seamlessly with backend systems via WebSockets and REST APIs to deliver live market data and trading updates. Collaborate closely with KDB, Java, and Kafka engineers to ensure robust data flow and efficient UI–backend interaction. Apply modern React design patterns (hooks, context, state management) to build scalable, maintainable components. Conduct performance tuning, debugging, and profiling to ensure smooth operation under production trading loads. Work directly with traders, quants, and technology teams to translate workflow requirements into intuitive, reliable user interfaces. Qualifications Bachelor's degree in Computer Science, Software Engineering, or a related technical discipline. Expert-level proficiency in ReactJS, JavaScript (ES6+), HTML/CSS, and browser-based development. Deep understanding of React UI architecture and design patterns, as well as commonly used JavaScript patterns. Proven experience integrating UIs with real-time backend services (developing and debugging WebSockets and REST APIs). Working knowledge of Node.js for tooling or lightweight backend integration. Experience with JavaScript testing frameworks (e.g., Jest, Mocha, Cypress). Strong grasp of front-end performance optimization, cross-browser compatibility, and secure web application practices. Ability to operate effectively in a fast-paced trading or financial technology environment with high standards for reliability and latency. Preferred Experience working with AWS for deployment or service integration. Exposure to Electron, Progressive Web Apps (PWA), or Glue42 integration technologies used in trading desktop environments. Familiarity with streaming data systems (e.g., Kafka) and real-time event-driven architectures. Understanding of financial markets, market data, or order/trade workflows. Strong communication skills and a collaborative mindset suited to small, high-impact teams in a hedge fund setting.