C++ Low Latency Engineer | Systematic Trading

Selby Jennings; Greater London; On-site; GBP 120,000 - 180,000; Full time

Benefits offered by this job

Competitive compensation

Long-term career progression

Job summary

Selby Jennings is seeking a C++ Software Engineer for a technology-driven, systematic trading firm. You will build and optimise low-latency infrastructure that powers a global trading platform, focusing on efficiency, scalability and reliability in latency-sensitive software.

You will work with modern C++ in a high-performance environment, collaborating with senior engineers to deliver robust systems and direct business impact.

Qualifications

• Open to candidates from financial services or leading technology firms with experience building high-performance, latency-sensitive software.
• Experience in trading, exchanges or financial markets is beneficial but not essential.

Responsibilities

• Develop and optimise the low-latency infrastructure powering the trading platform.
• Work on performance-critical systems to improve efficiency, scalability and reliability.

Skills

Latency-sensitive development

Low-latency networking

C++ programming

Multithreading

Tools

C++17/20/23

STL & OO design

Messaging systems

Socket programming

FIX Protocol

Market data feeds

Job description

Our client is a technology-driven systematic trading firm seeking a C++ Software Engineer to build and optimise the low-latency infrastructure powering their global trading platform. You'll work on performance-critical systems where efficiency, scalability and reliability directly impact trading performance.

Technical Skills

Modern C++ & Low Latency:

• Modern C++ (C++17/20/23 and beyond)
• Multithreading, Concurrency & Memory Management
• STL, Object-Oriented Design & Software Architecture
• Messaging Infrastructure

Networking:

• TCP/IP, UDP & Socket Programming
• High-Performance Networking
• FIX Protocol
• Exchange Connectivity
• Market Data Feeds
• Electronic Trading Systems

Ideal Background

Open to candidates from either financial services or leading technology firms who have experience building high-performance, latency-sensitive software. Experience within trading, exchanges or financial markets is beneficial but not essential.

What's on Offer

• Build critical technology within a leading systematic trading environment
• Work alongside high-calibre engineers on challenging technical problems
• Significant ownership and direct impact on business outcomes
• Competitive compensation and strong long-term career progression opportunities