Jobs at Citadel

Participate in a structured fixed income and macro trading rotation. Develop expertise in financial markets, apply statistical techniques to trading, adapt investment approaches, and use advanced trading technology. Collaborate with traders, quantitative researchers, and technologists while identifying opportunities and managing risk. The internship also includes networking with senior team members and peers.

Develop and evolve investor-facing equity products from discovery through launch and iteration. Build high-performance, data-intensive interfaces using React and TypeScript for research, risk, portfolio, and investment workflows. Collaborate with investors, product managers, UX designers, and engineers to identify opportunities, shape product strategy, prototype solutions, and deliver maintainable, well-tested software with strong commercial impact.

As a Quantitative Developer, you'll innovate and enhance quantitative methods, develop custom tools, maintain data pipelines, and collaborate with researchers for advancing investment strategies.

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.

Serve as a senior HR advisor to EMEA Fixed Income and Macro leaders. Lead workforce planning, organizational design, succession planning, talent assessment, performance management, compensation and promotion decisions. Use workforce data to provide insights, guide organizational priorities, and measure talent initiatives. Partner with the Head of People and global People teams, coach leaders and junior HR staff, and drive cross-business talent initiatives across multiple EMEA markets.

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.

Build high-performance tools and large-data research platforms to enable trading strategies. Work in small engineering teams to design systems, develop platforms and web frameworks, and apply techniques such as distributed computing, NLP, and machine learning to solve complex problems.

Quantitative Research Engineers at Citadel's GQS develop software solutions, enhance trading systems, and collaborate with researchers to apply quantitative techniques.

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.

Commodities Analysts generate commodity investment ideas through fundamental research and data analysis, focusing on modeling supply and demand and improving data quality.

Partner with quantitative researchers to design, build, optimize, and scale deep learning models and tooling for research and production. Work includes model architecture, distributed training, inference optimization, ML libraries, and high-performance computing to improve training speed, scalability, reliability, and cost-efficiency in systematic investing workflows.

This role entails using statistics and machine learning to analyze complex datasets, implementing algorithms, and back-testing models. A PhD is required for this position.

Develop and improve mathematical models and trading approaches. Conduct statistical analysis and back test trading strategies in a fast-paced environment.

Conduct ML research (deep learning, NLP) on large and unstructured financial datasets, implement algorithms in high-quality code, back-test models, document findings, and collaborate with senior researchers during an 11-week summer internship in Hong Kong or Singapore.

As a Quantitative Researcher intern at Citadel, you'll develop models, implement trading strategies, and conduct statistical research in finance.

Internship supporting trade lifecycle operations across asset classes. Collaborate with trading/financing desks, counterparties, exchanges, prime brokers and custodians. Perform data analysis and coding, identify process and technology improvements, and help reduce inefficiencies across trade workflows while learning securities financing and market products.

Conduct quantitative research for financial markets by developing valuation strategies, mathematical models, trading signals, and monetization systems. Responsibilities include translating algorithms into code, backtesting and implementing trading models, analyzing unconventional data sources, and applying statistical techniques. The 11-week post-doctoral internship involves collaboration with senior researchers in a fast-paced investment environment.

Leads EMEA People Operations across onboarding, mobility, payroll inputs, benefits, employee records, lifecycle changes and offboarding. Oversees regulatory compliance, HR data integrity, KRI reporting, audits, vendor performance and continuous process improvement across multiple international locations. Partners with HR, recruiting, compensation, benefits, legal, compliance, finance, IT and external providers while managing sensitive employee matters and complex operational escalations.

Support EMEA People Operations across onboarding, mobility, payroll inputs, benefits, employee records, lifecycle changes, and offboarding. Handle HR queries, maintain accurate systems and documentation, coordinate with internal teams and vendors, support regulatory requirements, produce risk reports, assist audits, and improve processes. The role requires strong HR operations experience, data accuracy, confidentiality, and knowledge of international employee support, preferably within financial services.

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.