C++ Software Engineer

Join to apply for the C++ Software Engineer role at Citadel Securities Join to apply for the C++ Software Engineer role at 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. 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 outcomes Build and Scale: Design, build and maintain high performance systems that are the backbone of our trading infrastructure Optimize Everything: Continuously push the limits of latency, reliability, and throughput in a distributed environment Partner and Deliver: Collaborate directly with traders, researchers, and fellow engineers to deliver ideas into production Own it in production: Take pride in running your code live - Monitoring, supporting and improving it every day Qualifications : Deep experience in C++ with a passion for clean, performant code A strong grasp of multithreading, concurrency, and distributed systems Curiosity to explore how things work and a drive to improve them Clear, thoughtful communication and the ability to thrive in a high ownership environment Bachelor’s (or higher) degree in a Computer Science, Engineering or related field Background in Trading or finance is a plus but not a requirement This 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: 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. Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Job function Referrals increase your chances of interviewing at Citadel Securities by 2x Sign in to set job alerts for “Software Engineer” roles. 2025 Software Development Graduate (AWS, Auckland,NZ), (0-2 Years, Entry-Level) Sydney, New South Wales, Australia 4 days ago Sydney, New South Wales, Australia 2 weeks ago Sydney, New South Wales, Australia 2 weeks ago Software Development Graduate (2025, AWS) Sydney, New South Wales, Australia 1 day ago Software Engineer, Engineering Productivity, Android, Early Career Software Engineer, Early Career, iOS, Photos Software Engineer - Frontend (Open to remote across ANZ) Sydney, New South Wales, Australia 2 weeks ago Sydney, New South Wales, Australia 2 weeks ago Frontend Software Engineer - CMS Team (Open Across ANZ) Sydney, New South Wales, Australia A$99,938.00-A$110,271.00 3 weeks ago Sydney, New South Wales, Australia 5 months ago Sydney, New South Wales, Australia 2 weeks ago North Sydney, New South Wales, Australia 2 weeks ago Graduate Software Developer (Java/Python) - Nasdaq Market Surveillance Sydney, New South Wales, Australia 1 day ago Sydney, New South Wales, Australia A$100,000.00-A$185,000.00 2 days ago Junior Software Engineer (Typescript/React/Node/AWS) - NEW TEAM Sydney, New South Wales, Australia 1 month ago Software Engineering Internship (Dec 2025 - March 2026) Sydney, New South Wales, Australia A$62,000.00-A$62,000.00 2 weeks ago Software Engineer, Google Global Networking Software Engineering Internship (Dec 2025 - March 2026) Sydney, New South Wales, Australia 2 weeks ago Sydney, New South Wales, Australia 2 weeks ago Sydney, New South Wales, Australia A$100,000.00-A$150,000.00 2 weeks ago Sydney, New South Wales, Australia A$80,000.00-A$100, hours ago Software Engineering Internship (Dec 2025 - March 2026) Sydney, New South Wales, Australia A$62,000.00-A$62,000.00 2 weeks ago Software Engineer, Platform - Sydney, Australia Sydney, New South Wales, Australia 4 days ago Sydney, New South Wales, Australia A$120,000.00-A$150,000.00 2 weeks ago Sydney, New South Wales, Australia 6 days ago Surry Hills, New South Wales, Australia 1 day ago Sydney, New South Wales, Australia 7 months ago Sydney, New South Wales, Australia 6 days ago Sydney, New South Wales, Australia A$100,000.00-A$185,000.00 2 weeks ago Sydney, New South Wales, Australia 2 days ago We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. #J-18808-Ljbffr