Ultra-low-latency C++ Developer (Electronic Market Making)

Oxford Knight; London; On-site; GBP 170,000 - 200,000; Full time

Job summary

A premier UK financial technology firm is seeking an Ultra-low-latency C++ Developer in London to join their core tech team. This role involves working closely with traders, designing and supporting a cutting-edge low-latency trading platform. Candidates should have over 5 years of C++ experience, with a strong appreciation for low-latency systems. Flexible working arrangements and excellent career growth opportunities are offered.

Benefits

Flexible working opportunities

Professional development encouraged

Qualifications

• 5+ years’ professional experience in C++ (C++17 and 20 ideal).
• Experience in low-latency architecture and design.
• Previous finance experience is a plus.

Responsibilities

• Design, develop, maintain and support the low-latency trading platform.
• Collaborate with traders to understand their needs.
• Contribute to pre- and post-trade analysis.

Skills

C++

Low-latency architecture

Linux administration

Education

Bachelor's degree in STEM

Job description

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Ultra-low-latency C++ Developer (Electronic Market Making), London

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Client:

Oxford Knight

Location:

London, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

18ce644fdacc

Job Views:

33

Posted:

12.08.2025

Expiry Date:

26.09.2025

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Job Description:

Salary: up to £200k base + bonus (roughly £400k TC potential)

Summary:

A premier C++ business-facing team is seeking strong C++ engineers to join a growing core tech team, based in London. You will work closely with traders in a dynamic and busy trading-floor environment, contributing significantly to the front office team and the design of low-latency strategies.

The role:

You will be working on several exciting projects for the EMM Technology team, covering all aspects of the software development lifecycle. Collaborating closely with the traders to understand their needs, you will design, develop, maintain and support the cutting-edge low-latency trading platform and provide a meaningful contribution in terms of pre- and post-trade analysis.

Projects in the pipeline are broad, and include things like:

• Dynamic services for stock limits
• Working with market data vendors
• Messaging layers
• Working on the quant models
• Super low-latency critical pathways

The successful C++ Developer will be someone who thrives on huge amounts of project ownership, and using predominantly C++17, moving towards C++20.

Skills and Experience Required:

• 5+ years’ professional experience, strong in C++ (C++17 and 20 ideal)
• Low-latency architecture & design knowledge
• Previous experience in finance is a plus
• Advanced understanding of modern architecture and design across all systems
• Experience of Linux administration
• Bachelor’s degree in STEM subject
• High degree of ownership and impactful work
• Excellent career growth and professional development is encouraged
• Flexible working and working from home opportunities

Whilst we carefully review all applications, to all jobs, due to the high volume of applications we receive it is not possible to respond to those who have not been successful.