Citadel Securities

About Citadel Securities

Citadel Securities is a leading global market maker that provides institutional and retail investors with the liquidity they need to execute transactions in all market conditions across a broad array of equity and fixed income products. At Citadel Securities, the brightest minds in finance, science and technology use next-generation analytics to solve the market’s most critical challenges, turn big ideas into real-world outcomes and accelerate their careers. For more information, visit

C++ at Citadel Securities

Our Software Engineers create next-generation software to support business areas across the firm in developing and delivering custom-solutions that optimize performance and efficiency.


  • Build, maintain, and support one of the world’s most powerful trading platforms while continuously improving performance, functionality, and stability of the system
  • Design, develop, test, and deploy elegant software solutions across the firm
  • Partner with business leaders to define priorities and deliver custom solutions
  • Analyze complex business and technical problems
  • Make sound decisions proactively and in a self-directed manner
  • Provide timely systems support for trading activities

Skills and Preferred Qualifications

  • A deep passion for technology and software development
  • In-depth experience working in C++
  • The ambition to solve open-ended problems using analytical methods
  • Sound understanding of multi-threaded application design and development
  • Professional experience working with distributed systems
  • Strong communication and interpersonal skills applicable to a dynamic trading environment
  • Minimum Bachelor’s degree in Computer Science or related field
  • Experience with proprietary trading is preferable but not necessary