Suffolk / London / Hybrid An exciting opportunity to join the Sizewell C programme in a client-side TOC Assurance function, supporting the assurance, validation, and governance of Target Outturn Cost (TOC) submissions across major heavy civil engineering packages. The role can operate at either Project Manager or Senior Manager level depending on experience and will play a critical part in ensuring that contractor submissions, procurement strategies, cost estimates, risk allowances, and pre-construction plans are robust, transparent, auditable, and aligned with programme objectives. You will work closely with commercial, procurement, engineering, delivery, and risk teams, providing independent challenge and assurance across cost, schedule, risk, and commercial assumptions while supporting key governance and decision-making processes. Key Responsibilities TOC Assurance and Commercial Governance Review, challenge, and validate Target Outturn Cost (TOC) submissions across major heavy civils packages. Assess cost build-ups, estimates, pricing methodologies, assumptions, labour productivity, indirect costs, and contractor commercial proposals. Evaluate risk allowances, contingencies, escalation assumptions, and commercial provisions to ensure value for money and programme alignment. Identify commercial, delivery, cost, and schedule risks, opportunities, and inconsistencies within submissions. Procurement and Pre-Construction Support Support procurement activities ..... full job details .....