Quantitative Research Engineer

Job Description

Responsibilities

• Collaborate closely with quantitative researchers to translate mathematical models into production-grade, ultra-low latency implementations

• Maintain and improve trading algorithms by looking for both quantitative and performance-based opportunities

• Apply advanced mathematical and computational techniques to market microstructure problems

• Develop and optimize high performance C++ for real-time trading systems

• Profile, measure, and reason rigorously about system behavior under extreme performance constraints Required Skills

Research Engineers at Citadel Securities are responsible for designing, building and optimizing our electronic trading platform. Research Engineers will work closely with our researchers, simulation and live traders to perform various functions, including the development of our core-trading infrastructure and high-throughput trading systems and working with the research team to identify and optimize critical bottlenecks in research and production trading.

We require a strong knowledge of low-level optimization, interest in algorithmic trading, data analysis/design, risk management and application development. Research Engineers will gain exposure to quantitative trading while working in our fast-paced, dynamic environment. Our Research Engineers work on projects from inception through to deployment and are expected to take real ownership of the assets they are building.

Required Qualifications

Strong mathematical and quantitative foundation

Strong background in systems programming and performance engineering

Expert-level proficiency in C++ with a demonstrated history of writing high performance, low latency code

Understanding of modern CPU architectures: including pipelines, caches, memory models, and parallel execution

Proven ability to optimize software across abstraction layers, from algorithms to hardware

Preferred Experience

Prior experience in high frequency trading, market making, or electronic trading infrastructure

Experience with parallel programming models and heterogeneous computing

Track record of delivering production systems where performance was the primary constraint

HPC programming, include accelerators such as GPUs, TPUs, etc.

Specialties

Financial technology and electronic trading systems

Low level CPU and GPU performance optimization

Research-driven engineering in production environments 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 in 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 our clients’ most critical challenges. Together, we are forging the future of capital markets. For more information, visit citadelsecurities.com .

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