Are you an exceptional Chief of Staff or senior leadership-support specialist ready for a high-impact contract role? We are seeking an experienced professional to be the 'leadership execution engine' for the 'RUN' function of a critical UK Government secure technology service. This organisation is undergoing significant transformation and requires a steady hand to strengthen operational discipline and coordination. The Role: Drive the leadership operating rhythm, ensuring pace, clarity, and discipline for the Deputy Service Director and the wider team. Sharpen evidence-based decision-making and improve cross-functional alignment across 160 global locations. Act as a proxy for senior leaders in engagements with central government bodies (e.g., Cabinet Office, HMT), coordinating key submissions and shaping the narrative. The Essentials: Experience in a senior operational or Chief of Staff role, thriving in complex, fast-moving environments. Strong political astuteness, excellent communication skills, and the ability to operate with confidence at senior Civil Service levels. Mandatory Requirement: Current SC