Senior Front End Developer

Overview Job Purpose Intercontinental Exchange (ICE) is seeking a Senior-Front End Developer within the Index Technology team. The ICE Index Technology team is responsible for building software systems that construct, calculate and manage global Index and ETF products. IDI calculates millions of index levels per day, reliably and efficiently. The senior developer will focus on the migration of our Sigma application UI (Java Swing) to React UI technologies. The role will follow established design patterns and architectural principles, and collaborate well with QA, product management and other functional teams to implement high quality solutions to user requirements. The ideal candidate for this position will be a self-directed individual with a passion for excellence and demonstrable experience in building and maintaining diverse business applications containing complex workflows and business rules. The role requires strong knowledge of front-end technologies, good experience with iterative development and SDLC tools, and the ability to work well with others. Responsibilities Design, develop, and maintain complex, enterprise-scale GUIs  Collaborate with product managers, UX designers, backend engineers, and QA to deliver new features end to end  Translate UI/UX designs into high-quality, production-ready implementations  Ensure technical feasibility, accessibility, and performance of UI designs  Optimize applications for speed, scalability, and responsiveness  Integrate front-end components with Java Spring Boot back-end services  Participate in and lead code reviews, providing constructive feedback and promoting best practices  Troubleshoot and resolve UI performance, stability, and usability issues  Stay current with emerging front-end technologies, frameworks, and industry trends  Knowledge and Experience Bachelor’s in computer science or software/computer engineering (or equivalent) required 5+ years of professional experience developing graphical user interfaces for production systems  Strong proficiency in JavaScript, TypeScript, and React  Solid understanding of HTML5, CSS3, and modern web development standards  and, or similar)  Hands-on experience consuming and integrating RESTful APIs  Strong understanding of asynchronous programming patterns  Familiarity with Java Spring Boot–based backend integrations  Proficiency with Git and modern version control workflows  Preferred Knowledge and Experience Exposure to the financial services technologies domain Backend development experience in Java, or a strong willingness to learn and contribute to backend services  #LI-HR1 #LI-ONSITE ---------- Intercontinental Exchange, Inc. is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to legally protected characteristics.