Low-Latency Quantitative Trading Systems Engineer

Millennium Management LLC; City Of London; On-site; GBP 120,000 - 210,000; Full time

Job summary

Millennium Management LLC is seeking an experienced Quantitative Trading Systems Engineer to join its Systematic Macro trading team in London. You will build and maintain the real-time, low-latency C++ infrastructure that underpins live systematic trading across global markets, from data ingestion to execution.

You will collaborate with the Senior Portfolio Manager to productionise signal computation, deploy and monitor systems, and ensure robust live trading support.

Qualifications

• 5+ years building production systems in an electronic trading environment in futures, FX, and/or fixed income products.
• Strong C++ in a performance-critical, low-latency context (primary language for this role).
• Experience building production trading systems and market-data/order-entry components.
• Deep understanding of concurrent, real-time systems design.
• Strong software engineering fundamentals, including testing, version control, and code quality.
• Strong Linux development experience.
• Familiarity with monitoring, controls, and production support in a front-office setting is advantageous.
• Experience working with shared internal services, APIs, or established platform infrastructure is highly valuable.

Responsibilities

• Build the team's C++ latency-sensitive trading systems from market data ingestion to order execution.
• Productionise performance-critical signal computation within the trading systems.
• Build the supporting research infrastructure, including replay and data management.
• Support execution-related workflows across systematic strategies in Futures, FX, and Fixed Income.
• Specify the team's performance and infrastructure requirements to central technology teams and work with them to deliver.
• Partner with broader technology teams to make effective use of the firm's shared platforms and services - execution, risk, portfolio management, data, and monitoring.
• Implement and maintain team-level trading controls and support live production processes, while ensuring appropriate integration with the firm's broader trading control framework.

Skills

C++ development

Low-latency systems

Production systems

Linux development

System architecture

Version control

Education

Bachelor's degree

Master's or PhD

Job description

Millennium Management LLC is seeking an experienced Quantitative Trading Systems Engineer to join its Systematic Macro trading team in London. You will build and maintain the real-time, low-latency C++ infrastructure that underpins live systematic trading across global markets, from data ingestion to execution.

You will collaborate with the Senior Portfolio Manager to productionise signal computation, deploy and monitor systems, and ensure robust live trading support.