Software Developer C++

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

At Cantor Fitzgerald Technology Markets LLC, we are seeking a talented Software Developer C++ to join our dynamic team in London. As a key member of our Electronic Products department, you will play a vital role in designing, developing, and enhancing our matching engines, FIX gateways, and other electronic trading applications. Your expertise in Java and C++ will be instrumental in building and maintaining high-performance, low-latency solutions that power our financial services business.

Responsibilities

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

Qualifications

• At least 5 years of professional software development experience, with a strong focus on Java development.
• Working knowledge of C and C++, along with experience or familiarity with Python, is essential.
• Hands-on experience in developing applications using FIX or similar electronic trading protocols is a must.
• A proven track record in working within a high-frequency, low-latency, or electronic trading environment.
• Strong understanding of networking concepts and protocols, including TCP/IP, UDP, unicast, and multicast.
• Good knowledge of Linux, including system calls, multithreading, inter-process communication, sockets, and scheduling.
• Experience with performance-focused programming techniques for high-frequency trading systems.
• Excellent understanding of efficient in-memory data management and associated optimization techniques.
• Knowledge of NUMA architectures and NUMA-aware programming practices is an advantage.
• Experience in developing client-server applications and a strong grasp of software performance, concurrency, and networking. #LI-JM1

Job Info

• Job Identification 249570
• Posting Date 08/04/2026, 03:55 PM
• Locations 288 Bishopsgate,, London, EC2M 4QP, GB