Jobs at Citadel

Develop modern C++ systems for systematic investing, including low-latency data processing, high-frequency trading execution, quantitative analytics libraries, and machine-learning inference tools. Collaborate with quantitative researchers to build scalable, reliable, and performant production platforms, design distributed data pipelines, evaluate system architectures, and maintain fail-safe live-market trading infrastructure.

An 11-week Finance and Accounting internship offering placements in corporate accounting, fund and broker-dealer accounting, or financial reporting. Responsibilities include auditing expense reports, supporting cash receipts and journal entries, assisting with regulatory and financial reporting, monitoring compliance, overseeing accounting records and NAV calculations, supporting audits, and researching U.S. GAAP and IFRS questions. Interns also identify process improvements and collaborate with stakeholders.

Participate in an 11-week Operations internship supporting clearing, settlements, corporate actions, collateral management, and shared services. Analyze business needs using data, develop and implement strategic process improvements, manage team projects end-to-end, collaborate across global teams, and contribute to a cross-functional capstone initiative focused on advancing Operations.

Join a 24/7 European power trading desk as a graduate trader. Learn physical and financial power markets, execute day-ahead and intraday trades, optimize renewable and battery portfolios, apply statistical techniques, build quantitative models and dashboards with Python and SQL, analyze trading risks, and collaborate with engineers and researchers to improve algorithmic trading and asset optimization platforms.

Oversee the administration, governance, compliance, and development of employee benefits programs across EMEA. Manage pensions, healthcare, risk, perks, vendors, renewals, provider transitions, and new-market implementations. Partner with Payroll, Legal, Operations, HR, and Communications teams; translate regulations and market data into actionable programs; improve processes; and resolve complex benefits inquiries.

Global Quantitative Researchers at Citadel leverage advanced statistical and quantitative techniques to drive investment strategies and optimize portfolios.

Quantitative Researchers at GQS leverage advanced statistical techniques and machine learning for investment strategies, portfolio optimization, and innovative research.

Develop and deploy advanced machine learning models across asset classes, focusing on deep learning, sequence/time-series modeling, NLP/LLMs, pre-training, fine-tuning, and reinforcement learning. Design and optimize models for performance, scalability, and robustness to model price formation, market behavior, and risk while collaborating with researchers, engineers, and traders.

As a Quantitative Researcher Intern, you'll develop models and strategies, conduct statistical analysis, and implement algorithms in a trading context.

As a PhD intern, you will design and develop software solutions for automated trading systems, collaborating closely with the Quantitative Research team.

Engineers at Citadel work in small teams to develop high-performing technology under quick cycles. They focus on creating tools for trading strategies and data research platforms.

Summer intern role building high-performance, large-data research platforms and web frameworks. Collaborate in small teams to create tools for trading strategies, applying distributed computing, NLP, and machine learning.

The role involves physical gas trading, analysis, and scheduling, requiring keen knowledge of U.S. gas markets and collaboration with internal stakeholders.

Develop, test, and deploy software solutions for automated trading systems in partnership with Quantitative Researchers. Implement high-performance, scalable systems using advanced quantitative techniques, distributed computing, ML/NLP, and strong software engineering practices. Collaborate on priorities, deliver custom solutions, and engage with senior team members during an 11-week internship.

The Recruiting Coordinator collaborates with recruiters to manage the hiring process, schedule interviews, and maintain candidate pipelines, requiring strong communication and organizational skills.

The Quantitative Researcher develops trading models and conducts research using complex statistical techniques, requiring a PhD in a quantitative field.

11-week internship building high-performance research platforms and trading tools. Work in small teams on distributed systems, NLP/ML applications, and web frameworks while collaborating with senior engineers.

Support investment teams by acquiring, cleaning, and analyzing diverse datasets to test investment theses. Learn fundamental investor approaches, identify key data drivers and inflection points, and present research findings. Work with existing and new data to generate insights and decision-support tools for sector-focused investment research.

Develop high-performance research platforms and tools that bring trading strategies to life. Work in small teams to design, build, and deploy resilient systems using distributed computing, NLP, and machine learning to solve large-data problems in finance.

Optimize and manage portfolio-level trading strategies by translating quantitative research into production. Tune allocators and risk, minimize trading costs and market impact, monitor performance in real time, and conduct statistical research to improve risk-adjusted returns.