Senior C++ Quantitative Developer - Low-Latency Trading

Millennium Management LLC; Greater London; On-site; GBP 150,000 - 210,000; Full time

Job summary

Millennium in London is seeking a Senior Quantitative Developer to design, implement, and optimize low-latency C++ execution algorithms and order management components across global trading teams. You will work with real-time data, multi-threaded systems on Linux, and high-performance networking, collaborating with traders to deliver timely, reliable market execution and research tooling.

The ideal candidate has 10+ years in software development, strong C++17/20 expertise, and a deep

Qualifications

• Bachelor's degree in Computer Science or related field required.
• 10+ years software development experience, front-office financial services preferred.
• Strong C++ expertise with low-latency, real-time systems.

Responsibilities

• Design, develop, and maintain low-latency C++ execution algorithms, order management systems, strategy containers, connectivity, and messaging systems.
• Partner with central trading teams to optimize execution performance across regions.
• Reduce system latency with advanced network and systems programming techniques.
• Build systems, interfaces, and tools for historical market data analysis and trading simulations.
• Develop and maintain automated tests, performance benchmarking frameworks, and internal engineering tools.
• Collaborate with trading teams to gather requirements and deliver solutions.

Skills

C++17/20

Low latency

Multithreading

Async IO

Python

Financial markets

Algorithm design

Education

Bachelor's degree in Computer Science

Tools

Linux

Networking

LLM tools

Job description

Millennium in London is seeking a Senior Quantitative Developer to design, implement, and optimize low-latency C++ execution algorithms and order management components across global trading teams. You will work with real-time data, multi-threaded systems on Linux, and high-performance networking, collaborating with traders to deliver timely, reliable market execution and research tooling.

The ideal candidate has 10+ years in software development, strong C++17/20 expertise, and a deep