# Software Engineer – Intern (US)

[Citadel Securities](https://www.jorb.ai/firms/citadel-securities.md) · London · United Kingdom · [Backend](https://www.jorb.ai/jobs/backend.md)

Citadel Securities is hiring a Software Engineer – Intern (US) in London. Posted 2026-07-13; applications close 2026-09-11.

**Apply**: https://www.citadelsecurities.com/careers/details/software-engineer-intern-us-2/

Posted 8d ago.

## Role details

## About the Role

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 moves into production. As an engineer, you can create system 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 challenge the impossible in technology through an 11-week program that allows you to collaborate and connect 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

## Skills & Talents

  
- Bachelor’s, master’s, or PhD in computer science, computer engineering, or related fields
  
- 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 may be available from time to time in any location in which the business is based for suitable candidates. If you are interested in a career with Citadel Securities, please share your details and we will contact you if there is a vacancy available.

## 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.

## Applying to this role

This Software Engineer – Intern (US) role at Citadel Securities 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.

[Tailor this application](https://www.jorb.ai/signup?ref=job-atom&firm=citadel-securities&job=6a5549e74246285cc85e0e07)

## More open roles at Citadel Securities

- [Quantitative Trading – Intern (Asia)](https://www.jorb.ai/jobs/6a57b153f6a0d5ad0702b918.md) – Hong Kong, posted 6d ago
- [Software Engineer – Intern (Asia)](https://www.jorb.ai/jobs/69d5c82f9d70fc6e282fee20.md) – Singapore, posted 3mo ago
- [Quantitative Researcher – PhD Intern (Asia)](https://www.jorb.ai/jobs/6a198039471c722e4024ddcd.md) – Hong Kong, posted 1mo ago
- [Machine Learning Researcher – PhD Intern (US)](https://www.jorb.ai/jobs/6a198039471c722e4024ddd9.md) – New York, posted 1mo ago
- [Machine Learning Researcher – PhD Intern (Asia)](https://www.jorb.ai/jobs/6a449753553fc3f8cb32915d.md) – Singapore, posted 21d ago

## Other open Backend roles

- [Modeling Engineering - London](https://www.jorb.ai/jobs/69f4d43a67c428f5cdcd7d25.md) at [Two Sigma](https://www.jorb.ai/firms/two-sigma.md) – London, posted 2mo ago
- [Internship Programme 2027: Software Engineer (Java)](https://www.jorb.ai/jobs/6a2956a39a43d08d0a019315.md) at [Revolut](https://www.jorb.ai/firms/revolut.md) – London, posted 1mo ago
- [Internship Programme 2027: Software Engineer (Python)](https://www.jorb.ai/jobs/6a2956a39a43d08d0a0192b3.md) at [Revolut](https://www.jorb.ai/firms/revolut.md) – London, posted 1mo ago
- [2026 APAC Long Internship (Jul - Dec) – Wealth Management IT – Singapore](https://www.jorb.ai/jobs/6a48f12fd522e14fd10e54cc.md) at [BNP Paribas](https://www.jorb.ai/firms/bnp-paribas.md) – Singapore, posted 26d ago
- [Software Developer Intern (New York) – Summer 2027](https://www.jorb.ai/jobs/6a1d8c785934adb8262c10c6.md) at [D. E. Shaw](https://www.jorb.ai/firms/d-e-shaw.md) – New York, posted 1mo ago

---

Updated: 2026-07-22
Canonical: https://www.jorb.ai/jobs/6a5549e74246285cc85e0e07