Senior C++ Engineer

Senior C++ Engineer - High Performance SystemsOxford (Hybrid), £90k to £95kAvanti Recruitment is working with a deep-tech company behind a high-performance reasoning engine deployed on over 60 million devices worldwide.This is core engine development for an elite engineering team working on core C++ systems, where performance, correctness, and engineering quality are absolutely critical.The RoleYou''ll be working on a performance-critical C++ system, tackling problems around:Complex data processing and reasoningConcurrency and multithreaded systemsMemory efficiency and low-level optimisationCross-platform behaviour (Linux, Windows, macOS)System-level interactions where requiredThis is hands-on, systems-level engineering.Skills required10-15 years of software development experienceStrong commercial experience with modern C++ (C+ or later)Background in systems-level or performance-critical developmentSolid understanding of multithreading / concurrencyComfortable working close to the system (memory, OS behaviour, performance)Passion for writing high-quality, maintainable codeBonus pointsExperience with low-level optimisation High-performance backend systemsQuant / trading systemsDatabase or engine developmentGaming / real-time systemsFamiliarity with cross-platform developmentWhat Makes This Role DifferentWork on a core product used at global scaleStrong focus on engineering quality over shortcutsBacked by a major global technology organisation, offering stability and long-term ..... full job details .....