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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Employee Reviews
Markets move fast. Citadel Securities’ engineers build innovative tools and distributed systems that keep its business nimble and responsive — operating with high reliability in real time.
The company works in small teams, partnering with researchers and traders to solve complex problems at scale. Teams move quickly from idea to implementation, and the markets deliver swift feedback.
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Dmitry loves the markets. His willingness to approach seemingly impossible feats as opportunities makes him a culture carrier and leader. His contributions propelled his rise from individual contributor to head of options technology within four years.
Recently posted jobs
Information Technology • Software • Financial Services • Quantitative Trading
Analyze financial markets and securities using fundamental and quantitative research. Develop sector expertise, identify pricing inefficiencies, transform unstructured data into signals, monitor market trends, and collaborate with traders to create actionable trade ideas during an 11-week internship.
Information Technology • Software • Financial Services • Quantitative Trading
Conduct end-to-end ML research for options trading: design experiments, train large-scale models (LLMs/transformers), build scalable pipelines, validate and deploy models to production, and translate research into measurable P&L impact.
Information Technology • Software • Financial Services • Quantitative Trading
Build high-performance trading tools and large-data research platforms in small teams. Design system architectures, develop resilient production software, and apply distributed computing, NLP, and machine learning to solve complex quantitative problems while collaborating with engineers, traders, and researchers.
At a glance
take time to socialize
A team motto is, "Whatever we do, we do to the utmost." Box seats for athletic events. Rooftop yoga. There are always opportunities to get to know fellow colleagues better.
care for your health
Benefits cover all aspects of team members’ physical and mental health, from fitness subsidies and wellness initiatives to mindfulness programs and telehealth.
realize your full potential
From day one, team members have the chance to learn and grow at an exceptional pace. Those who are ambitious and take initiative easily find new opportunities that push them even further.
join exceptional talent
The brightest minds in finance, mathematics and technology solve consequential problems at Citadel Securities. Team members drive operational excellence and help create more dependable global markets.
