Lead Quant — Cash Equity AI-Driven Trading & Execution

Citigroup Inc.; Greater London; Hybrid; GBP 120,000 - 180,000; Full time

Benefits offered by this job

Hybrid work model

Career development programs

Wellness benefits

Job summary

Citigroup Inc. is seeking a Senior Quantitative Analyst to develop and scale our cash equity electronic execution platform. You will leverage AI techniques and mathematical methods to research market microstructure across EMEA and drive platform innovation.

You will backtest strategies with Python and kdb+ while collaborating with Sales Trading, Execution Advisory Services, and technology teams to align capabilities with evolving business needs.

Qualifications

• Extensive background in quantitative modeling/analytics in finance.
• Proficient in Java and Python; strong software development principles.
• Strong foundation in probability, statistics, mathematical finance.
• Experience applying AI to high-performance trading applications.

Responsibilities

• Build and scale cash equity electronic execution platform.
• Conduct EMEA equity market microstructure research and backtest strategies.
• Backtest and prototype quantitative strategies using Python and kdb+.
• Analyze client trading performance and provide quantitative insights.
• Collaborate with Sales Trading, Execution Advisory, and technology teams.
• Coordinate with Risk, Compliance, Legal, and Finance for governance.

Skills

Quantitative modeling

Statistics

Probability theory

AI for trading

Communication

Algorithmic trading

Education

Master's degree in Mathematics/Financial Engineering/Physics/CS

PhD in a quantitative field

Tools

Java

Python

Rust

kdb+/Q

Job description

Citigroup Inc. is seeking a Senior Quantitative Analyst to develop and scale our cash equity electronic execution platform. You will leverage AI techniques and mathematical methods to research market microstructure across EMEA and drive platform innovation.

You will backtest strategies with Python and kdb+ while collaborating with Sales Trading, Execution Advisory Services, and technology teams to align capabilities with evolving business needs.