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Job Description Role Summary In our mission to be the most successful investment team in the world, we hire the brightest minds in technology, research, and finance to create innovative solutions that impact the financial markets and take data analysis to new levels. User Interface (UI) Engineers at Citadel Securities are crucial members of the team gathering requirements and continuously delivering high-quality applications. Our UI Engineers leverage advanced JavaScript knowledge and visualization skills to build scalable and performant web applications. These members of our team are thought leaders who engage the development community to push boundaries of what is the next generation our web platform. Opportunities may be available from time to time in any location in which the business is based for suitable candidates. If you are interested in a career with Citadel, please share your details and we will contact you if there is a vacancy available. Responsibilities Develop solutions that enable our internal investment professionals to research, monitor, and trade in real-time on internal/external information. This includes gathering requirements, prototyping solutions, and delivering final products that optimize users workflows and interactions across the investment process Partner with the industry's top analysts, traders, quantitative researchers, and data scientists to design, develop, and deploy solutions that answer fundamental questions about financial markets Visualize financial data in a way that will allow investment professionals to discover new insights, improve research processes, and decision-making Drive our evolution by challenging the status quo and identifying opportunities to enhance our platform Qualifications Passion for working with users and developing solutions that deliver amazing user experience Experience with any of the following: React, Angular, Redux, Electron/OpenFin, WebAssembly, Node.js Experience with wire-framing, prototyping and user-centric design Proficiency with JavaScript (ES6) and TypeScript Proficiency with HTML5 (Canvas, WebWorkers, WebSockets), CSS3, SASS Strong written and verbal communications skills Bachelor's, Master's degree in Computer Science or equivalent experience About Citadel Securities Citadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market's most critical challenges, turning big ideas into real-world outcomes.