Crypto Quantitative Developer

Citadel Securities; Greater London; On-site; GBP 70,000 - 90,000; Full time

Job summary

Citadel Securities is expanding its digital assets team and seeking a Crypto Quantitative Developer in London. The role includes developing high-performance trading systems for crypto markets using modern C++.

Key responsibilities encompass designing and maintaining low-latency systems, collaborating with quantitative researchers, and optimizing system performance across various factors. Applicants should possess strong C++ skills and a background in quantitative finance or related fields.

Qualifications

• Strong proficiency in modern C++ (C++17 or newer).
• Experience developing low-latency trading systems.
• Strong understanding of Linux environments with networking.

Responsibilities

• Design and maintain high-performance C++ trading systems.
• Partner with researchers to translate ideas into code.
• Optimize performance including exchange connectivity.

Skills

C++ proficiency

Data structures

Algorithms

Problem-solving

Networking

Cloud deployments

Knowledge of crypto markets

Education

Background in quantitative finance, mathematics, or computer science

Job description

We are expanding our digital assets team and are seeking a Crypto Quantitative Developer to build and optimize high-performance trading systems in fast-moving, highly competitive markets.

In this role, you’ll work at the intersection of quantitative research, low-latency systems, and crypto market microstructure, developing production-grade trading strategies using modern C++.

Locations

London, New York

Responsibilities

• Design, develop, and maintain low-latency, high-performance C++ trading systems for crypto markets
• Partner closely with quantitative researchers and traders to translate trading ideas into production code
• Optimize system performance across latency, throughput, and reliability, including exchange connectivity and market data handling
• Build and enhance pricing, risk, and execution logic for crypto products
• Analyze and improve system behavior using large-scale market and trade data
• Ensure systems are resilient, well-tested, and scalable across global crypto venues

Qualifications

• Strong proficiency in C++ (C++17 or newer) with a focus on performance-critical systems
• Solid foundation in data structures, algorithms, and systems programming
• Experience developing production trading systems or other low-latency, high-availability software
• Strong understanding of Linux environments, networking, and concurrency with a focus on cloud deployments
• Excellent problem-solving skills and the ability to work in a fast-paced, collaborative environment
• Experience working with crypto markets, exchanges, or digital asset trading infrastructure (preferred)
• Knowledge of market microstructure, order books, and execution strategies (preferred)
• Background in quantitative finance, mathematics, computer science, or a related technical field