London-based Low-Latency C++ Trading Systems Engineer

Cantor Fitzgerald; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Cantor Fitzgerald Technology Markets LLC in London is seeking a Software Developer C++ to design and enhance high‑performance trading applications, including matching engines and FIX gateways. You will contribute to low-latency systems and real‑time data processing, spanning Java and C++ development.

The role emphasizes a strong background in electronic trading, networking, and multithreading, with a focus on delivering robust, scalable software for a financial services environment.

Qualifications

• At least 5 years of professional software development experience with a strong focus on Java.
• Working knowledge of C and C++, and familiarity with Python.
• Hands-on experience with FIX or similar electronic trading protocols.
• Proven track record in high-frequency, low-latency, or electronic trading environments.
• Strong understanding of networking (TCP/IP, UDP) and Linux systems.

Responsibilities

• Design, develop, and enhance matching engines, FIX gateways, and electronic trading apps.
• Build high-performance, low-latency applications using Java and C++.
• Develop client-server applications and real-time market data gateways.
• Work with FIX and other trading protocols for seamless integration.
• Develop in-memory data structures and processing techniques for performance.
• Troubleshoot production issues and improve stability and scalability.
• Collaborate with trading, product, and infrastructure teams to deliver robust solutions.
• Support full software development lifecycle and deployment.

Skills

Java development

C/C++

Multithreading

Networking concepts

Linux

Tools

FIX protocol

Python

Job description

Cantor Fitzgerald Technology Markets LLC in London is seeking a Software Developer C++ to design and enhance high‑performance trading applications, including matching engines and FIX gateways. You will contribute to low-latency systems and real‑time data processing, spanning Java and C++ development.

The role emphasizes a strong background in electronic trading, networking, and multithreading, with a focus on delivering robust, scalable software for a financial services environment.