Role Overview We are seeking an experienced SC Cleared Cost Engineer/Project Controls professional to support a major Defence/UK Government (HMG) digital transformation programme. This is a senior, hands-on role requiring end-to-end ownership of programme cost management, including estimating, forecasting, cost control, and financial assurance within a complex, regulated environment. The successful candidate will operate at programme level, providing financial insight, governance support, and decision-making input to senior stakeholders including SROs and Programme Boards. Key Responsibilities Own end-to-end programme cost management, including estimating, forecasting, budgeting, and cost control Develop and maintain robust cost models aligned to programme scope, schedule, risks, and benefits Support and contribute to Full Business Cases (FBCs) in line with HM Treasury Green Book principles Monitor financial performance, including budget vs actuals vs forecast analysis Deliver variance analysis, cost risk insights, and performance reporting to senior stakeholders Integrate cost, schedule (SRA), and risk (QRA) to provide holistic programme insights Apply Earned Value Management (EVM) techniques to track performance and predict outcomes Identify cost drivers, assumptions, and financial risks, and challenge where necessary Provide decision support to Programme Boards and Senior Responsible Owners (SROs) Manage cost baselines, change control, and financial governance complia