2nd February 2026
Senior C++ Developer
Development
London
£95,000 + bonus
Senior C++ Engineer
Location: London (Liverpool Street) – 3 days onsite
Salary: £95,000 + bonus
Type: Permanent, full time
Overview
Senior C++ Engineer needed to work on high-performance trading and analytics systems in a low-latency environment. This is a hands-on role focused on building, optimising and stabilising mission-critical platforms used across the business.
You’ll work close to production systems, taking ownership of complex technical issues including crash investigation, deep debugging and performance optimisation.
Key Responsibilities
- Design and build low-latency C++ applications with a strong focus on performance and resilience
- Own production issues including crash analysis, memory corruption and runtime failures
- Perform deep debugging (call stacks, disassembly, dump analysis) and deliver long-term fixes
- Optimise multi-threaded, Real Time systems
- Contribute to technical design decisions and code reviews
- Mentor junior engineers and raise engineering standards
- Work closely with QA, DevOps and business stakeholders
Key Skills & Experience
- Strong commercial C++ experience (C++11/14/17)
- Background in low-latency, high-throughput systems (finance/trading preferred)
- Deep knowledge of modern C++: memory management, concurrency, STL, templates
- Strong debugging skills (crash dumps, memory leaks, runtime analysis)
- Experience with Windows internals and tooling (eg WinDbg, Visual Studio)
- Solid understanding of multi-threading and performance optimisation
- Git, CI/CD, testing practices
Nice to Have
- Advanced Windows internals or disassembly-level debugging
- Messaging systems (Kafka, ZeroMQ, Solace)
- Distributed systems or cloud exposure
- Python or C# Scripting
- Trading systems or market data experience
Consultant - Seth Couch
Telephone: 0207 392 7503
Email: seth.couch@spencer-rose.com
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