Senior C++ Programmer

A leading Cambridge technology company is seeking a SeniorC++ Engineer to take ownership of a large, business-critical monolithic C++ codebase. This is a rare opportunity to shape the future of a mature system used globally, driving a long-term modernisation programme while embedding world-class engineering and testing practices.

If you enjoy deep technical challenges, architectural thinking, and the satisfaction of turning a complex legacy system into a clean, modern, testable platform, this role will suit you perfectly.

The Role

You will become the technical lead responsible for the evolution of a substantial C++ codebase. Your mission spans architecture, refactoring, and quality engineering:

• Modernise a tightly coupled monolith into a more modular, maintainable architecture
• Introduce modern C++ standards (C++17/20), patterns, and tooling
• Lead a structured programme of incremental refactoring and technical debt reduction
• Establish and champion effective testing strategies across the codebase
• Improve testability, reliability, and long-term maintainability
• Drive adoption of CI/CD, automated testing, and static/dynamic analysis tools
• Mentor engineers, lead design reviews, and set engineering standards
• Balance strategic improvements with ongoin...