Senior C++ Programmer

Hybrid working 1 or 2 days per week.A major maritime defence contractor is seeking an accomplished Senior C++ Software Engineer to join its advanced engineering division in Portsmouth. Youll work on large-scale, highly complex naval systems that support surface ships, submarines and next-generation maritime platforms technology where robustness, precision and engineering excellence are non-negotiable.This is a senior role offering exceptional working conditions, a world-class benefits package and the opportunity to influence mission-critical systems used across the Royal Navy and allied fleets. If youre an experienced C++ engineer looking to apply your expertise to meaningful, long-term defence programmes, this is a standout opportunity.About the Role Youll take technical ownership of major C++ components within distributed, real-time maritime systems. Expect modern C++, high-integrity software development, complex systems integration, and involvement in architectural decision-making. Youll collaborate with systems engineers, hardware specialists and domain experts to deliver software that performs flawlessly in demanding operational environments.This role suits engineers with deep experience in C++ who want to work on serious, long-lived defence platforms with real operational impact.Key Responsibilities Lead the design, development and optimisation of C++ software for advanced maritime defence systems.Own major components across real-time, embedded and distributed architectures.Drive architectural discussions, design reviews and technical strategy.Mentor mid-level and junior engineers, shaping engineering standards and best practice.Collaborate with systems, hardware and test teams across the full development lifecycle.Support integration, verification and validation across simulation environments and physical platforms.Ensure compliance with secure development practices and defence-sector engineering requirements.Contribute to long-term technical roadmaps for next-generation maritime systems.Essential Qualifications 810+ years professional experience developing complex systems in C++.Expert-level understanding of modern C++ (C++11/14/17/20) , STL, templates, memory management and performance tuning.Strong background in real-time, embedded or distributed systems.Solid Linux development experience and familiarity with modern tooling (Git, CI/CD, debugging/profiling tools).Experience working within high-assurance or safety-critical environments.Strong analytical mindset and the ability to solve complex engineering problems.Comfortable leading technical discussions and guiding engineering teams.Eligibility to work on defence projects (including the ability to undergo security vetting).TPBN1_UKTJ