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C++ Software Engineer

Citadel Securities
🇺🇸New YorkMediorFull-time$150k–$300kPosted March 24, 2026

About the Role

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, read on.

  • 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

Responsibilities

  • Break down intricate challenges and deliver clear, elegant solutions that drive real world outcomes
  • Design, build and maintain high performance systems that are the backbone of the trading infrastructure
  • Continuously push the limits of latency, reliability, and throughput in a distributed environment
  • Collaborate directly with traders, researchers, and fellow engineers to deliver ideas into production
  • Take pride in running your code live – Monitoring, supporting and improving it every day

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
  • 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

What You'll Get

  • $150k–$300k base salary
  • Medical and life insurance
  • Retirement and tax-free savings plans
  • Access to other healthcare programs
  • Discretionary incentive compensation program