Senior C++ Developer

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+/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