Citadel Securities

HQ
Miami, Florida, USA
Total Offices: 13
1,900 Total Employees
Year Founded: 2002
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Teams at Citadel Securities

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The Next-Generation Capital Markets Firm

Citadel Securities’ work is powered by the deepest integration of financial, mathematical and engineering expertise. Combining deep trading acumen with cutting-edge analytics and technology, team members deliver critical liquidity to the world’s most important financial institutions — while helping shape the global markets of tomorrow.

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Citadel Securities

Quantitative Researcher - 2025 PhD Graduate (Europe)

10 Hours Ago
London, Greater London, England, GBR
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Information Technology • Software • Financial Services
As a Quantitative Researcher, you will develop and enhance mathematical models for trading strategies, back test and implement these models, utilize unconventional data sources for innovation, and conduct statistical analysis for monetization systems.
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Citadel Securities

Quantitative Researcher - 2025 PhD Intern (Europe)

10 Hours Ago
London, Greater London, England, GBR
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Information Technology • Software • Financial Services
As a Quantitative Researcher intern at Citadel Securities, you will develop and test automated trading strategies, conduct statistical analysis, and work on modeling valuation strategies using advanced statistical techniques. The role emphasizes collaboration and networking within a fast-paced team environment.
Information Technology • Software • Financial Services
As a Machine Learning Researcher at Citadel Securities, you will apply advanced machine learning and AI techniques to analyze datasets, back-test models, and document your findings. Your work will contribute to developing innovative trading strategies in a fast-paced environment.
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