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Citadel Securities

Miami, United States1000-5000 employeesFounded 2002

About Citadel Securities

Citadel Securities is a leading global market maker and liquidity provider operating across equities, options, fixed income, and foreign exchange markets. As one of the largest market makers in the world, the firm executes trades for retail and institutional clients across more than 35 countries, providing continuous two-sided liquidity that improves price discovery and lowers transaction costs. Citadel Securities serves as a Designated Market Maker on the New York Stock Exchange and handles a significant share of US equity volume daily. The firm leverages proprietary quantitative research, advanced technology infrastructure, and high-frequency trading systems to deliver competitive execution quality. Citadel Securities employs quantitative researchers, engineers, and traders who build and deploy sophisticated algorithms across asset classes. The firm is known for its rigorous, data-driven culture and investment in cutting-edge low-latency technology, making it a destination for top talent in quantitative finance and software engineering.

Office Locations

🇺🇸

Miami(HQ)

United States

🇺🇸

Chicago

United States

🇮🇪

Dublin

Ireland

🇮🇳

Gurugram

India

🇭🇰

Hong Kong

Hong Kong

🇬🇧

London

United Kingdom

🇺🇸

New York

United States

🇫🇷

Paris

France

🇨🇳

Shanghai

China

🇸🇬

Singapore

Singapore

🇦🇺

Sydney

Australia

🇯🇵

Tokyo

Japan

🇨🇭

Zurich

Switzerland

Open Positions(82)

Trade Support Analyst

Citadel Securities

  • Junior

New York

Salary: $175k–$225k per year

Posted 8 days ago

UI Engineer – CES Client Platforms

Citadel Securities

  • Medior

New York

Salary: $175k–$350k per year

Posted 15 days ago

Quantitative AI Technical Staff

Citadel Securities

  • Junior

Miami

Salary not disclosed

Posted 21 days ago

Quantitative Researcher – Post-Doctoral Intern (US)

Citadel Securities

  • Student
  • Intern

New York · Miami

Salary: $4,500–$5,800 per week

Posted 21 days ago

Full Stack Software Engineer

Citadel Securities

  • Medior

New York · London · Sydney

Salary: $175k–$350k per year

Posted 21 days ago

Crypto Market Feed Handlers Lead

Citadel Securities

  • Senior

New York · London

Salary: $175k–$350k per year

Posted 21 days ago

Equities Engineering | Product Frontend Engineer | New York

Citadel Securities

  • Medior

New York

Salary: $105k–$300k per year

Posted 21 days ago

FPGA Engineer – Intern (Asia)

Citadel Securities

  • Student
  • Intern

Hong Kong · Singapore

Salary not disclosed

Posted 21 days ago

Quantitative Trader – University Graduate (US – Miami)

Citadel Securities

  • Student

Miami

Salary not disclosed

Posted 21 days ago

Designated Market Maker (DMM) Trader – Intern (US)

Citadel Securities

  • Student
  • Intern

New York

Salary: $2,000–$2,800 per week

Posted 21 days ago

Quantitative Trading – Intern (Asia)

Citadel Securities

  • Student
  • Intern

Hong Kong

Salary not disclosed

Posted 21 days ago

Senior Python Software Engineer

Citadel Securities

  • Senior

New York · London

Salary: $125k–$350k per year

Posted 21 days ago

Rates Trading – Intern (Europe)

Citadel Securities

  • Student
  • Intern

London · Paris

Salary not disclosed

Posted 21 days ago

Quantitative Trader – University Graduate (US – New York)

Citadel Securities

  • Student

New York

Salary: $235k–$300k per year

Posted 21 days ago

Research Engineer

Citadel Securities

  • Medior

Miami

Salary not disclosed

Posted 21 days ago

Principal Data Visualization Engineer

Citadel Securities

  • Senior

New York

Salary: $175k–$350k per year

Posted 21 days ago

C++ Market Data Engineer

Citadel Securities

  • Senior

New York · Miami

Salary: $125k–$350k per year

Posted 21 days ago

Software Engineer – University Graduate (Europe)

Citadel Securities

  • Student

London

Salary not disclosed

Posted 21 days ago

Software Engineer – Intern (US)

Citadel Securities

  • Student
  • Intern

New York · Miami

Salary: $4,500–$5,800 per week

Posted 21 days ago

FPGA Engineer – Intern (US)

Citadel Securities

  • Student
  • Intern

New York · Miami

Salary: $4,500–$5,800 per week

Posted 21 days ago

Machine Learning Researcher – PhD Graduate (Asia)

Citadel Securities

  • Student

Hong Kong · Singapore

Salary not disclosed

Posted 21 days ago

Trading Fundamental Analyst – Intern (US)

Citadel Securities

  • Student
  • Intern

New York

Salary: $3,800–$4,300 per week

Posted 21 days ago

UI Engineer (Contractor)

Citadel Securities

  • Senior
  • Contractor

New York

Salary: $175k–$350k per year

Posted 21 days ago

Systematic Crypto Trader

Citadel Securities

  • Medior

London · Singapore

Salary not disclosed

Posted 21 days ago

Software Engineer – Intern (Australia)

Citadel Securities

  • Student
  • Intern

Sydney

Salary not disclosed

Posted 21 days ago