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Citadel Securities Logo

C++ Software Engineer

Citadel Securities

$150,000 - $300,000
Aug 14, 2025
Chicago, IL, USA • New York, NY, USA
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Citadel Securities is looking for driven innovators and optimizers who are excited about cutting-edge technology and making a measurable impact. The company needs to solve intricate challenges and deliver clear, elegant solutions that drive real-world outcomes, build and scale high-performance systems that are the backbone of their trading infrastructure, and optimize latency, reliability, and throughput in a distributed environment.

Requirements

  • 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

Responsibilities

  • 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
  • Solve What Matters: Break down intricate challenges and deliver clear, elegant solutions that drive real world outcomes
  • 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

Other

  • Opportunities may be available from time to time in any location in which the business is based for suitable candidates.
  • Clear, thoughtful communication and the ability to thrive in a high ownership environment
  • Background in Trading or finance is a plus but not a requirement