Role: Senior Software EngineerLocation: Essex - 5 days a week onsitePay rate: 600- 700p/d (outside IR35)I''m looking for an experienced C++ engineer looking to work on genuinely complex, mission-critical software. This role is fully on-site, 5 days a week.We''re working with a global company based in Essex, seeking an experienced Software Engineer to develop and maintain sophisticated integrated monitoring and automation systems.You''ll be working with: C++ Windows application development (Visual Studio) Real-time, high-volume data transfer Serial interfaces and protocols - RS232, RS422, CAN Bus, ModBus, NMEA Multi-threaded architecturesExperience with Qt, TCP/UDP, DirectX/OpenGL or Google Protocol Buffers would be a bonus.This is a hands-on, technically rewarding role with real ownership over what you build - ideal for an engineer who thrives in a specialist, niche environment.Interested? Please reach out to Fintan at TEC Partners for more details.