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.

United Kingdom

London

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

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  <h2 class="jobSectionHeader"><b>Job Description</b></h2> 
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   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.
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   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.
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   <b>Your Objectives:</b>
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  <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> 
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   <b>Your Skills &amp; Talents:</b>
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   <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>
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   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>
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  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

Requirements

Responsibilities

FAQs

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Are interns expected to have strong analytical skills?

Citadel Securities

Mission & Purpose