About Citadel SecuritiesCitadel 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.Role Overview:We’re looking for driven innovators and optimizers who are excited about cutting-edge technology and making a measurable impact. If you’re passionate, obsessed with performance, and excited to work where nanoseconds matter.Responsibilities:Solve What Matters: Break down intricate challenges and deliver clear, elegant solutions that drive real world outcomesBuild and Scale: Design, build and maintain high performance systems that are the backbone of our trading infrastructureOptimize Everything: Continuously push the limits of latency, reliability, and throughput in a distributed environmentPartner and Deliver: Collaborate directly with traders, researchers, and fellow engineers to deliver ideas into productionOwn it in production: Take pride in running your code live - Monitoring, supporting and improving it every dayQualifications:Deep experience in C++ with a passion for clean, performant codeA strong grasp of multithreading, concurrency, and distributed systemsCuriosity to explore how things work and a drive to improve themClear, thoughtful communication and the ability to thrive in a high ownership environmentBachelor’s (or higher) degree in a Computer Science, Engineering or related fieldBackground in Trading or finance is a plus but not a requirementThis role requires you to be based in one of our global offices listed below. If you are not currently located in one of these cities, we offer a comprehensive relocation package to support your move:Gurugram, Hong Kong, London, Miami, New York, Shanghai, Singapore, Sydney, Zurich.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.
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