Quantitative Researcher Engineer - PhD Intern (Europe)

Citadel Securities
London, GB
On-site

Job Description

At Citadel Securities, Quantitative Research Engineers work closely with Quantitative Researchers to develop and implement automated trading system software solutions. These solutions utilize advanced statistical and quantitative techniques to tackle complex financial challenges. We seek candidates with a proven track record of excellence in their field and a strong desire to apply their advanced software engineering skills to systematic investing.

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.

Our signature internship program takes place June through August. Occasionally, we can be flexible to other times of the year. You will be able to indicate your timing preference in the application.

Your Objectives

Design, develop, test, and deploy elegant software solutions for automated trading systems

Partner with the Quantitative Research team to define priorities and deliver custom software solutions

Your Skills & Talents

PhD degree in computer science, mathematics, statistics, physics, or another highly quantitative field

Strong programming skills with proficiency in one or more programming languages, including C++, Python, and R

A deep passion for technology, software development, and mathematics

Strong computer science fundamentals and software development experience

Experience with some of the following areas: Distributed Computing, Natural Language Processing, Machine Learning, Platform Development, Networking, System Design, and/or Web Development

Proven track record of creatively solving problems by understanding and prioritizing business value and applying technology solutions

Strong written and verbal communications skills

Opportunities available in Zurich and London.

Skills & Requirements

Technical Skills

Quantitative researchAutomated trading system software solutionsAdvanced statistical techniquesSoftware engineeringDistributed computingNatural language processingMachine learningPlatform developmentNetworkingSystem designWeb developmentFinanceQuantitative research

Employment Type

INTERN

Level

mid

Posted

4/11/2026

Apply Now

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