Job Description
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
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Design and build low-latency C++ applications with a strong focus on performance and resilience
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Own production issues including crash analysis, memory corruption and runtime failures
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Perform deep debugging (call stacks, disassembly, dump analysis) and deliver long-term fixes
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Optimise multi-threaded, Real Time systems
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Contribute to technical design decisions and code reviews
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Mentor junior engineers and raise engineering standards
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Work closely with QA, DevOps and business stakeholders
Key Skills & Experience
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Strong commercial C++ experience (C+/14/17)
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Background in low-latency, high-throughput systems (finance/trading preferred)
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Deep knowledge of modern C++: memory management, concurrency, STL, templates
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Strong debugging skills (crash dumps, memory leaks, runtime analysis)
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Experience with Windows internals and tooling (eg WinDbg, Visual Studio)
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Solid understanding of multi-threading and performance optimisation
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Git, CI/CD, testing practices
Nice to Have
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Advanced Windows internals or disassembly-level debugging
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Messaging systems (Kafka, ZeroMQ, Solace)
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Distributed systems or cloud exposure
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Python or C# Scripting
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Trading systems or market data experience
