We want you as a talented System Integration Senior Engineer to help us lead the system end‑to‑end integration and verification of functional and environmental elements within the Nyx spacecraft, ensuring full compliance with system‑level requirements and standards. In this role, you will coordinate the integration of mechanisms, structural assemblies, deployment systems, and mechanical‑to‑avionics interfaces, driving the verification logic from early functional modelling through environmental qualification and final acceptance. You will define and execute plans, manage requirement traceability, analyse results, and close verification evidence campaigns. Working closely with subsystem leads, AIT teams, and external partners, you will identify integration risks, resolve anomalies, and ensure that all mechanical functions perform safely and reliably throughout the mission profile. This position requires a rigorous systems mindset, strong understanding of mechanical behaviour in the space environment, and the ability to lead multidisciplinary verification activities to successful closure.