# Quantitative Researcher – PhD Intern (Europe)

[Citadel Securities](https://www.jorb.ai/firms/citadel-securities.md) · London · United Kingdom · [Hedge Fund & Quant](https://www.jorb.ai/jobs/hedge-fund-quant.md)

Citadel Securities is hiring a Quantitative Researcher – PhD Intern (Europe) in London. Posted 2026-05-29; applications close 2026-07-28.

**Apply**: https://www.citadelsecurities.com/careers/details/quantitative-researcher-phd-intern-europe/

Posted 1d ago.

## Role details

## Overview

Citadel Securities is a technology-driven, next-generation global market maker. Our team of quantitative researchers models the markets and develops trading strategies to bring them to life daily. The team applies sophisticated statistical techniques to financial markets and large, complex data sets.

## Internship Details

We offer an 11-week internship program designed to foster collaboration with senior team members and provide opportunities to network with peers. The program runs from June through August, with occasional flexibility to other times of the year. Applicants may indicate their timing preference in the application.

## Your Objectives

  
- Conceptualize valuation strategies, develop and continuously improve mathematical models, and translate algorithms into code.
  
- Back-test and implement trading models and signals in a live trading environment.
  
- Use unconventional data sources to drive innovation.
  
- Conduct research and statistical analysis to build and refine monetization systems for trading signals.

## Your Skills & Talents

  
- PhD degree in mathematics, statistics, physics, computer science, or another highly quantitative field.
  
- Strong knowledge of probability and statistics (e.g., machine learning, time-series analysis, pattern recognition, NLP).
  
- Prior experience working in a data-driven research environment.
  
- Experience translating mathematical models and algorithms into code (Python, R, or C++).
  
- Independent research experience.
  
- Ability to manage multiple tasks and thrive in a fast-paced team environment.
  
- Excellent analytical skills with strong attention to detail.
  
- Strong written and verbal communication skills.

## Locations

Opportunities available in London, Paris, and Zurich.

## 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 clients’ most critical challenges. We are forging the future of capital markets.

## Application

Start Application: Start Application

## Applying to this role

This Quantitative Researcher – PhD Intern (Europe) 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=6a198039471c722e4024ddb9)

## More open roles at Citadel Securities

- [Quantitative Researcher Engineer – PhD Intern (Europe)](https://www.jorb.ai/jobs/6a198039471c722e4024ddaf.md) – London, posted 1d ago
- [Fixed Income Sales, Senior Analyst](https://www.jorb.ai/jobs/6a198039471c722e4024ddb3.md) – London, posted 1d ago
- [Quantitative Research Analyst Intern  – BS/MS (Asia)](https://www.jorb.ai/jobs/6a198039471c722e4024ddcc.md) – Hong Kong, posted 1d ago
- [Quantitative Researcher – PhD Intern (Asia)](https://www.jorb.ai/jobs/6a198039471c722e4024ddcd.md) – Hong Kong, posted 1d ago
- [Machine Learning Researcher – PhD Intern (US)](https://www.jorb.ai/jobs/6a198039471c722e4024ddd9.md) – New York, posted 1d ago

## Other open Hedge Fund & Quant roles

- [Graduate Trader](https://www.jorb.ai/jobs/68d7def098223bb0b2a35253.md) at [Onyx Capital Group](https://www.jorb.ai/firms/onyx-capital-group.md) – London, posted 8mo ago
- [APAC GM Prime Quantitative Research, Associate](https://www.jorb.ai/jobs/6a16df9183e9ccd62b08a838.md) at [BNP Paribas](https://www.jorb.ai/firms/bnp-paribas.md) – Hong Kong, posted 3d ago
- [Quantitative Researcher/Trader, Associate](https://www.jorb.ai/jobs/69669948a221733d21ce91fc.md) at [Balyasny Asset Management](https://www.jorb.ai/firms/balyasny-asset-management.md) – London, posted 4mo ago
- [Quantitative Trading Analyst - New York, Boston](https://www.jorb.ai/jobs/6981c1994d40a6a22835f128.md) at [Balyasny Asset Management](https://www.jorb.ai/firms/balyasny-asset-management.md) – New York, posted 3mo ago
- [Quantitative Researcher – PhD Intern (US)](https://www.jorb.ai/jobs/694ef16daa11ce41cf5114b4.md) at [Citadel](https://www.jorb.ai/firms/citadel.md) – New York, posted 5mo ago

---

Updated: 2026-05-30
Canonical: https://www.jorb.ai/jobs/6a198039471c722e4024ddb9