Large

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


Finance

Citadel Securities

You need a degree in a quantitative field, strong stats knowledge, coding skills (Python/R/C++), research experience, and excellent analytical and communication abilities.

You will develop and refine mathematical models, back test trading strategies, analyze unconventional data, and conduct research to enhance monetization systems for trading signals.

London

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  <h2 class="jobSectionHeader"><b>Job Description</b></h2> 
  <div>
   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, this team develops and tests automated quant trading strategies using sophisticated statistical techniques. You’ll get to challenge the impossible in quantitative research by applying sophisticated and complex statistical techniques to financial markets, some of the most complex data sets in the world. 
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  <div>
   As an intern, you’ll get to challenge the impossible in research through an 11 week program that will allow you to collaborate and connect with senior team members. In addition, you’ll get the opportunity to network and socialize with peers throughout the internship.
  </div> 
  <div></div>
  <div>
   <b>Your Objectives</b>
  </div> 
  <ul>
   <li>Conceptualize valuation strategies, develop and continuously improve upon mathematical models, and help translate algorithms into code</li> 
   <li>Back test and implement trading models and signals in a live trading environment</li> 
   <li>Use unconventional data sources to drive innovation</li> 
   <li>Conduct research and statistical analysis to build and refine monetization systems for trading signals</li> 
  </ul>
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  <div>
   <b>Your Skills &amp; Talents</b>
  </div> 
  <ul>
   <li>Bachelor’s or master’s degree in mathematics, statistics, physics, computer science, or another highly quantitative field </li>
   <li>Strong knowledge of probability and statistics (e.g., machine learning, time-series analysis, pattern recognition, NLP)</li> 
   <li>Prior experience working in a data driven research environment</li> 
  </ul>
  <ul>
   <li>Experience with translating mathematical models and algorithms into code (Python, R or C++)</li> 
   <li>Independent research experience</li> 
   <li>Ability to manage multiple tasks and thrive in a fast-paced team environment</li> 
   <li>Excellent analytical skills, with strong attention to detail</li> 
   <li>Strong written and verbal communication skills</li> 
  </ul>
  <div></div>
  <div>
   Opportunities available in London, Paris.
  </div> 
  <h2 class="jobSectionHeader"><b>About Citadel Securities</b></h2> 
  <p> Citadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market’s most critical challenges, turning big ideas into real-world outcomes.</p>
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<div></div>


 
  Job Description 
  
   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, this team develops and tests automated quant trading strategies using sophisticated statistical techniques. You’ll get to challenge the impossible in quantitative research by applying sophisticated and complex statistical techniques to financial markets, some of the most complex data sets in the world. 
  
  
  
   As an intern, you’ll get to challenge the impossible in research through an 11 week program that will allow you to collaborate and connect with senior team members. In addition, you’ll get the opportunity to network and socialize with peers throughout the internship.
   
  
  
   Your Objectives
   
  
   Conceptualize valuation strategies, develop and continuously improve upon mathematical models, and help translate algorithms into code 
   Back test and implement trading models and signals in a live trading environment 
   Use unconventional data sources to drive innovation 
   Conduct research and statistical analysis to build and refine monetization systems for trading signals 
  
  
  
   Your Skills & Talents
   
  
   Bachelor’s or master’s degree in mathematics, statistics, physics, computer science, or another highly quantitative field 
   Strong knowledge of probability and statistics (e.g., machine learning, time-series analysis, pattern recognition, NLP) 
   Prior experience working in a data driven research environment 
  
  
   Experience with translating mathematical models and algorithms into code (Python, R or C++) 
   Independent research experience 
   Ability to manage multiple tasks and thrive in a fast-paced team environment 
   Excellent analytical skills, with strong attention to detail 
   Strong written and verbal communication skills 
  
  
  
   Opportunities available in London, Paris.
   
  About Citadel Securities 
   Citadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market’s most critical challenges, turning big ideas into real-world outcomes.
 



Quantitative Research Analyst – 2025 Intern - Citadel Securities

Quantitative Research Analyst – 2025 Intern

You need a degree in CS or related field, strong programming skills, analytical abilities, effective communication, and a passion for solving complex tech problems.

You will create tools for trading strategies, develop high-performance data research platforms, and collaborate in small teams to innovate in finance.

<div>
 <div>
  <h2 class="jobSectionHeader"><b>Job Description</b></h2> 
  <div>
   At Citadel Securities, our engineers work in small teams to turn the best ideas into high-performing and resilient technology. With short development cycles, work rapidly goes into production. As an engineer, you can create systems architectures, develop platforms and build web frameworks. You’ll have access to state-of-the-art tools and apply innovative techniques including distributed computing, natural language processing, machine learning and more.
  </div> 
  <div></div>
  <div>
   As an intern, you’ll get to challenge the impossible in technology through an 11 week program that will allow you to collaborate and connect with senior team members. In addition, you’ll get the opportunity to network and socialize with peers throughout the internship.
  </div> 
  <div></div>
  <div>
   <b>Your Objectives:</b>
  </div> 
  <ul>
   <li>Create technological tools that bring trading strategies to life</li> 
   <li>Develop high-performance, large data research platforms</li> 
   <li>Work in small teams to build the future of finance</li> 
  </ul>
  <div></div>
  <div>
   <b>Your Skills &amp; Talents:</b>
  </div> 
  <ul>
   <li>Degree in Computer Science, Computer Engineering or related fields (Bachelor’s, Master’s, PhD)</li> 
   <li>Exceptional programming and design skills</li> 
   <li>Strong analytical skills and familiarity with probability and statistics</li> 
   <li>Ability to communicate effectively in a collaborative, complex and highly technical team environment</li> 
   <li>Intellectual curiosity and passion for solving challenging problems using technology</li> 
  </ul>
  <div></div>
  <div>
   Opportunities available in London.
  </div> 
  <h2 class="jobSectionHeader"><b>About Citadel Securities</b></h2> 
  <p> Citadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market’s most critical challenges, turning big ideas into real-world outcomes.</p>
 </div>
</div>
<div></div>


 
  Job Description 
  
   At Citadel Securities, our engineers work in small teams to turn the best ideas into high-performing and resilient technology. With short development cycles, work rapidly goes into production. As an engineer, you can create systems architectures, develop platforms and build web frameworks. You’ll have access to state-of-the-art tools and apply innovative techniques including distributed computing, natural language processing, machine learning and more.
   
  
  
   As an intern, you’ll get to challenge the impossible in technology through an 11 week program that will allow you to collaborate and connect with senior team members. In addition, you’ll get the opportunity to network and socialize with peers throughout the internship.
   
  
  
   Your Objectives:
   
  
   Create technological tools that bring trading strategies to life 
   Develop high-performance, large data research platforms 
   Work in small teams to build the future of finance 
  
  
  
   Your Skills & Talents:
   
  
   Degree in Computer Science, Computer Engineering or related fields (Bachelor’s, Master’s, PhD) 
   Exceptional programming and design skills 
   Strong analytical skills and familiarity with probability and statistics 
   Ability to communicate effectively in a collaborative, complex and highly technical team environment 
   Intellectual curiosity and passion for solving challenging problems using technology 
  
  
  
   Opportunities available in London.
   
  About Citadel Securities 
   Citadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market’s most critical challenges, turning big ideas into real-world outcomes.
 



Software Engineer – 2025 Intern - Citadel Securities

Software Engineer – 2025 Intern

You need a degree in a quantitative field, strong analytical skills, a passion for markets, and programming experience to tackle complex trading challenges.

You will analyze financial markets, apply statistical methods to trading, adapt strategies continuously, and leverage advanced trading platforms to innovate and improve performance.

<div>
 <div>
  <h2 class="jobSectionHeader"><b>Job Description</b></h2> 
  <div>
   At Citadel Securities, our traders make complex risk decisions and execute trades at scale, in real-time. As a markets and trading expert, you’ll use predictive analytics and advanced technology to monitor risk, respond to market signals and execute trading strategies across Options, ETFs, Equities, Fixed Income, Commodities and Currencies.
  </div> 
  <div></div>
  <div>
   As an intern, you’ll get to challenge the impossible in markets and trading through an 11 week program that will allow you to collaborate and connect with senior team members. In addition, you’ll get the opportunity to network and socialize with peers throughout the internship.
  </div> 
  <div></div>
  <div>
   <b>Your Objectives:</b>
  </div> 
  <ul>
   <li>Develop in-depth knowledge of a financial market</li> 
   <li>Apply advanced statistical techniques to trading</li> 
   <li>Constantly learn and adapt trading approaches</li> 
   <li>Innovate by using one of the industry’s most powerful trading platforms</li> 
  </ul>
  <div></div>
  <div>
   <b>Your Skills &amp; Talents:</b>
  </div> 
  <ul>
   <li>Bachelor’s, master’s or PhD in applied math, engineering, statistical modeling, calculus, computer science, physics or related disciplines required</li> 
   <li>Ability to think about the world systematically and quantitatively, as well as the ability to deal with uncertainty in a rigorous and statistical approach</li> 
   <li>Interest in applying technology and/or quantitative skills to solve complex trading problems</li> 
   <li>Passion for the markets and a desire to seize investment opportunities</li> 
   <li>Experience with programming, scripting, and/or statistical software strongly preferred</li> 
  </ul>
  <div></div>
  <div>
   Opportunities available in London.
  </div> 
  <h2 class="jobSectionHeader"><b>About Citadel Securities</b></h2> 
  <p> Citadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market’s most critical challenges, turning big ideas into real-world outcomes.</p>
 </div>
</div>
<div></div>


 
  Job Description 
  
   At Citadel Securities, our traders make complex risk decisions and execute trades at scale, in real-time. As a markets and trading expert, you’ll use predictive analytics and advanced technology to monitor risk, respond to market signals and execute trading strategies across Options, ETFs, Equities, Fixed Income, Commodities and Currencies.
   
  
  
   As an intern, you’ll get to challenge the impossible in markets and trading through an 11 week program that will allow you to collaborate and connect with senior team members. In addition, you’ll get the opportunity to network and socialize with peers throughout the internship.
   
  
  
   Your Objectives:
   
  
   Develop in-depth knowledge of a financial market 
   Apply advanced statistical techniques to trading 
   Constantly learn and adapt trading approaches 
   Innovate by using one of the industry’s most powerful trading platforms 
  
  
  
   Your Skills & Talents:
   
  
   Bachelor’s, master’s or PhD in applied math, engineering, statistical modeling, calculus, computer science, physics or related disciplines required 
   Ability to think about the world systematically and quantitatively, as well as the ability to deal with uncertainty in a rigorous and statistical approach 
   Interest in applying technology and/or quantitative skills to solve complex trading problems 
   Passion for the markets and a desire to seize investment opportunities 
   Experience with programming, scripting, and/or statistical software strongly preferred 
  
  
  
   Opportunities available in London.
   
  About Citadel Securities 
   Citadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market’s most critical challenges, turning big ideas into real-world outcomes.
 



Quantitative Trading – 2025 Intern - Citadel Securities

Quantitative Trading – 2025 Intern

You should possess strong analytical skills, a passion for finance, and a collaborative mindset. Relevant coursework or experience in finance, economics, or related fields is preferred.

You will assist in various projects, analyze data, collaborate with teams, support trading operations, and contribute to the development and execution of strategic initiatives.

Chicago

<div>
 <div>
  <h2 class="jobSectionHeader"><b>Job Description</b></h2> 
  <div>
   The Launch Internship is an eleven-week paid internship program for students aspiring to be engineers and seeking an opportunity learn about the finance industry.
  </div> 
  <div>
   As a Launch Intern, you will join us in a premier destination of learning and mentorship. During the 11-week program, you will be immersed in the finance industry, collaborating with experienced engineers on projects that have impact on our firms and global capital markets. You will have the opportunity to network and socialize with peers and even connect with senior leaders at Citadel and Citadel Securities.
  </div> 
  <div></div>
  <div>
   <b>Engineering at Citadel and Citadel Securities</b>
  </div> 
  <div>
   Our engineers work in small teams to turn the best ideas into high-performing and resilient technology. With short development cycles, work rapidly goes into production, whether we’re releasing new features, improving efficiency or reducing operational risk. We create systems architectures, develop platforms and build web frameworks—all critical to our business. We use state-of-the-art tools and apply innovative techniques including distributed computing, natural language processing, machine learning and more.
  </div> 
  <div></div>
  <div>
   <b>Your Objectives:</b>
  </div> 
  <ul>
   <li>Aid in creating technological tools that bring investing and trading strategies to life</li> 
   <li>Work on high-performance, large data research platforms</li> 
   <li>Collaborate in small teams to help build the future of finance</li> 
   <li>Be immersed in the industry and see how tech is applied in finance</li> 
   <li>Learn and grow personally and professionally through project work and curated development programming</li> 
  </ul>
  <div></div>
  <div>
   <b>Your Skills &amp; Talents:</b>
  </div> 
  <ul>
   <li>Currently a sophomore pursuing a bachelor’s degree in Computer Science, Computer Engineering, or STEM related field</li> 
   <li>Intermediate proficiency in at least one coding language</li> 
   <li>Ability to communicate effectively in a collaborative, complex and highly technical team environment</li> 
   <li>Intellectual curiosity and passion for solving challenging problems using technology</li> 
  </ul>
  <div></div>
  <div>
   Because Citadel is committed to an inclusive, respectful workplace culture, all candidates are welcome to apply. Candidates who have an ability to bring a diverse perspective to the firm as a result of their adaptability, cultural fluency, resilience, and life experiences are strongly encouraged to apply.
  </div> 
  <div></div>
  <div>
   Opportunities available in New York, Chicago, Miami.
  </div> 
  <p></p> 
  <div>
   <i>In accordance with New York City’s Pay Transparency Law, the base salary range for this role is $4,300 to $4,800 per week. Base salary does not include other forms of compensation or benefits.</i>
  </div> 
  <h2 class="jobSectionHeader"><b>About Citadel Securities</b></h2> 
  <p> Citadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market’s most critical challenges, turning big ideas into real-world outcomes.</p>
 </div>
</div>
<div></div>


 
  Job Description 
  
   The Launch Internship is an eleven-week paid internship program for students aspiring to be engineers and seeking an opportunity learn about the finance industry.
   
  
   As a Launch Intern, you will join us in a premier destination of learning and mentorship. During the 11-week program, you will be immersed in the finance industry, collaborating with experienced engineers on projects that have impact on our firms and global capital markets. You will have the opportunity to network and socialize with peers and even connect with senior leaders at Citadel and Citadel Securities.
   
  
  
   Engineering at Citadel and Citadel Securities
   
  
   Our engineers work in small teams to turn the best ideas into high-performing and resilient technology. With short development cycles, work rapidly goes into production, whether we’re releasing new features, improving efficiency or reducing operational risk. We create systems architectures, develop platforms and build web frameworks—all critical to our business. We use state-of-the-art tools and apply innovative techniques including distributed computing, natural language processing, machine learning and more.
   
  
  
   Your Objectives:
   
  
   Aid in creating technological tools that bring investing and trading strategies to life 
   Work on high-performance, large data research platforms 
   Collaborate in small teams to help build the future of finance 
   Be immersed in the industry and see how tech is applied in finance 
   Learn and grow personally and professionally through project work and curated development programming 
  
  
  
   Your Skills & Talents:
   
  
   Currently a sophomore pursuing a bachelor’s degree in Computer Science, Computer Engineering, or STEM related field 
   Intermediate proficiency in at least one coding language 
   Ability to communicate effectively in a collaborative, complex and highly technical team environment 
   Intellectual curiosity and passion for solving challenging problems using technology 
  
  
  
   Because Citadel is committed to an inclusive, respectful workplace culture, all candidates are welcome to apply. Candidates who have an ability to bring a diverse perspective to the firm as a result of their adaptability, cultural fluency, resilience, and life experiences are strongly encouraged to apply.
   
  
  
   Opportunities available in New York, Chicago, Miami.
   
   
  
   In accordance with New York City’s Pay Transparency Law, the base salary range for this role is $4,300 to $4,800 per week. Base salary does not include other forms of compensation or benefits.
   
  About Citadel Securities 
   Citadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market’s most critical challenges, turning big ideas into real-world outcomes.
 



Launch – 2025 Intern - Citadel Securities

Launch – 2025 Intern

You need a strong academic background, interest in financial markets, systematic thinking skills, and some programming experience for the Trading Fundamental Analyst intern role at Citadel Securities.

You will develop sector knowledge, identify pricing inefficiencies, analyze data, and monitor trends to collaborate with traders and maximize profits in the financial markets.

Data

Banking & Finance

Miami

<p><strong>Job Description</strong></p><p>Citadel Securities is a leading Market Maker. The ability to seamlessly blend fundamental and quantitative analysis has been one of the drivers of our success. Fundamental research analysts work closely with the trading team, using superior processes, data and intuition to forecast the first, second and third moment of a security’s price distribution around thematic and idiosyncratic events. Fundamental research analysts refine forecasts into actionable trade ideas.</p><p>As an intern, you’ll get to challenge the impossible in markets through an 11-week program that will allow you to collaborate and connect with senior team members. In addition, you’ll get the opportunity to network and socialize with peers throughout the internship.&nbsp;</p><p><strong>Your Objectives:</strong>&nbsp;</p><ul><li>Develop in-depth fundamental knowledge of a sector or industry, as well as broad base knowledge of financial markets</li><li>Identify pricing inefficiencies and collaborate with traders to monetize predictions</li><li>Identify new sources of data and transform unstructured data sets into signals</li><li>Own the information space you work within (i.e. large-cap tech) by monitoring trends in the marketplace</li></ul><p><strong>Your Skills &amp; Talents:&nbsp;</strong></p><ul><li>Strong academic background from a top school</li><li>A strong interest in financial markets and a desire to learn about the fundamentals that drive them</li><li>Ability to think about the world systematically and quantitatively, as well as the ability to deal with uncertainty in a&nbsp;logical and consistent approach</li><li>Intermediate experience with programming, especially Python, preferred, but not required</li></ul><p>Opportunities available in Miami, New&nbsp;York.</p><p><em>In accordance with New&nbsp;York&nbsp;City’s Pay Transparency Law, the base&nbsp;salary&nbsp;range for this role is $3,300 to $4,300 per week. Base&nbsp;salary&nbsp;does not include other forms of compensation or benefits.</em></p><p><strong>About Citadel Securities</strong></p><p>Citadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market’s most critical challenges, turning big ideas into real-world outcomes.</p>

Job DescriptionCitadel Securities is a leading Market Maker. The ability to seamlessly blend fundamental and quantitative analysis has been one of the drivers of our success. Fundamental research analysts work closely with the trading team, using superior processes, data and intuition to forecast the first, second and third moment of a security’s price distribution around thematic and idiosyncratic events. Fundamental research analysts refine forecasts into actionable trade ideas.As an intern, you’ll get to challenge the impossible in markets through an 11-week program that will allow you to collaborate and connect with senior team members. In addition, you’ll get the opportunity to network and socialize with peers throughout the internship. Your Objectives: Develop in-depth fundamental knowledge of a sector or industry, as well as broad base knowledge of financial marketsIdentify pricing inefficiencies and collaborate with traders to monetize predictionsIdentify new sources of data and transform unstructured data sets into signalsOwn the information space you work within (i.e. large-cap tech) by monitoring trends in the marketplaceYour Skills & Talents: Strong academic background from a top schoolA strong interest in financial markets and a desire to learn about the fundamentals that drive themAbility to think about the world systematically and quantitatively, as well as the ability to deal with uncertainty in a logical and consistent approachIntermediate experience with programming, especially Python, preferred, but not requiredOpportunities available in Miami, New York.In accordance with New York City’s Pay Transparency Law, the base salary range for this role is $3,300 to $4,300 per week. Base salary does not include other forms of compensation or benefits.About Citadel SecuritiesCitadel Securities is the next-generation capital markets firm and a leading global market maker. We provide institutional and retail investors with the liquidity they need to trade a broad array of equity and fixed income products in any market condition. The brightest minds in finance, science and technology use powerful, advanced analytics to solve the market’s most critical challenges, turning big ideas into real-world outcomes.

Citadel Securities

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