Software Engineer – Intern (Europe)
Citadel·London·United Kingdom·Backend
Citadel is hiring a Software Engineer – Intern (Europe) in London. Posted 2025-12-26; applications close 2026-07-05 (in 29 days).
Role details
Overview
At Citadel, our engineers work in small teams to transform the best ideas into high-performing, resilient technology. With short development cycles, work quickly moves 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.
Internship Program
As an intern, you’ll challenge the impossible in technology through an 11-week program that enables collaboration and connection with senior team members. You’ll also have opportunities to network and socialize with peers throughout the internship.
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
Location
Opportunities available in London.
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 across 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.
How to Apply
Start Application
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Applying to this role
This Software Engineer – Intern (Europe) role at Citadel runs through the firm's own careers portal and expects a CV and cover letter written specifically for the posting, not a portable submission carried across firms. Jorb AI's application agent tailors a CV and cover letter from your background to this posting and tracks the role alongside the rest of your applications.
Jorb AI tracks details for Software Engineer – Intern (Europe) at Citadel. Postings refresh hourly from primary careers pages. Job details mirror the firm's posting; the apply link goes directly to the source. Last refreshed 2026-06-06.
