At Citadel Securities, a leading global market maker, our team of quantitative researchers models the markets and brings trading strategies to life every day. Specifically, the goal of this team is to leverage and tailor the state-of-the-art machine learning and AI algorithms to modernize the quantitative trading industry. We're looking for extraordinary and highly motivated researchers who are excited about solving challenging problems and iterating in a fast-paced environment.
Your Objectives
- Use statistics, machine learning or AI (e.g. deep learning, NLP) to extract patterns from various kinds of datasets through innovative and rigorous research
- Implement algorithms in high-quality code
- Work with large data sets, including unconventional and unstructured data sources
- Back-test models and document research findings
Your Skills & Talents
- PhD degree in mathematics, statistics, physics, computer science, or another highly quantitative field
- Advanced training and strong research track record in statistics, machine learning, AI, or another highly quantitative field
- Prior experience working in a data driven research environment. Detail oriented and can deep dive into the data.
- Hands on programming experience in scripting (e.g. Python) and/or compiled languages (e.g. C++)
- A background demonstrating strong problem-solving skills
- An ability to communicate advanced concepts in a concise and logical way
- Proficiency in creating and using algorithms to meticulously investigate and work through large data or error-checking problems
Opportunities available in London, Zurich, and Dublin.
We collect and use personal data in accordance with our Privacy Policy . We retain data on prospective candidates and may consider suitability for alternative opportunities at Citadel. For more information, see our Privacy Policy.
About Citadel Securities
Citadel Securities is a technology-driven, next-generation global market maker. We provide institutional and retail investors with world-class liquidity, competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers, traders and researchers harness leading-edge quantitative research and the accelerating power of compute, machine learning and AI to power our analytics and tackle the market's and our clients' most critical challenges. Together, we are forging the future of capital markets. For more information, visit citadelsecurities.com .
Skills Required
- PhD degree in mathematics, statistics, physics, computer science, or another highly quantitative field
- Advanced training and strong research track record in statistics, machine learning, or AI
- Prior experience in a data-driven research environment and strong attention to detail
- Hands-on programming experience in scripting languages (e.g., Python) and/or compiled languages (e.g., C++)
- Experience working with large, unconventional, or unstructured datasets
- Ability to implement algorithms in high-quality code and back-test models
- Ability to communicate advanced concepts concisely and logically
- Proficiency creating and using algorithms to investigate large data or perform error-checking
What We Do
Citadel Securities is a technology-driven, next-generation global market maker. We provide institutional and retail investors with world-class liquidity, competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers, traders and researchers harness leading-edge quantitative research and the accelerating power of compute, machine learning and AI to power our analytics and tackle the market’s and our clients’ most critical challenges. Together, we are forging the future of capital markets.
Why Work With Us
We do not accept the status quo and we are constantly looking to achieve what others think is impossible. That’s true not just in our careers, but also in our communities.
Gallery
Citadel Securities Teams
Citadel Securities Offices
OnSite Workspace












