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Citadel

Software Engineer - Intern (Europe)

Likely open now
Summer Internship
Software Engineering
Paid
Year groups

2nd Year, 3rd Year, Final Year, Postgraduate

Deadline

Summer 2025

Field

Software Engineering

Overview

The Citadel Software Engineer Internship in Europe is a highly sought-after program designed for students pursuing degrees in Computer Science or related fields. Interns work on challenging projects, contributing to critical low-latency, high-throughput systems that power Citadel's global financial operations. The program offers direct exposure to cutting-edge technology and real-world financial markets.

About the employer

Citadel is a global financial institution operating one of the world’s largest and most successful hedge funds, alongside a leading market-making business through Citadel Securities. Founded in 1990 by Kenneth Griffin and headquartered in Miami, the firm manages capital across equities, credit, commodities, and global macro strategies.

Selection process

Assessment: Wonderlic

Application timeline

Opens: 12 Aug 2025; Opened last year: 06 Aug 2024

Structure & format

The program typically runs for 10-12 weeks during the summer months. It is an in-person internship, usually based in London, UK, or other European offices. Interns are expected to work full-time hours, immersing themselves in their assigned teams and projects.

Pay & benefits

Citadel is known for offering highly competitive salaries to its interns, often among the highest in the industry, along with potential relocation assistance and other benefits.

Eligibility

Applicants are typically university students in their penultimate or final year of study, or postgraduate students, pursuing a degree in Computer Science, Software Engineering, or a closely related quantitative field. A strong academic record and significant programming experience in languages like C++, Java, Python, or C# are usually required. Work authorization for the location of the internship is essential.

Application process

The application process generally involves an online application, resume and cover letter submission, followed by multiple rounds of technical interviews. These interviews often include coding questions, data structure and algorithm problems, and discussions about systems design and past project experience. Some candidates may also face behavioral questions.

Competitiveness & scale

Citadel's software engineering internships are extremely competitive, attracting a vast number of applications from top universities worldwide. The firm selects a relatively small cohort of interns, renowned for their technical prowess and problem-solving abilities.

Why this matters

Completing a Citadel Software Engineer internship provides invaluable experience in high-performance computing, large-scale systems, and financial technology. It significantly enhances a student's resume, demonstrating their ability to thrive in a demanding, intellectually stimulating environment and often serves as a pipeline for full-time employment at Citadel or other leading tech and finance firms.

Heads up

Dates can shift each year. Always confirm the live deadline on the provider's own page before you apply.