Commercial Manager (Cost & Forecasting) (Sizewell C)

Sizewell, GBPosted Oct 15, 2026

Job description

The Sizewell C Jobs Service supports local people into exciting, long-term careers across our Project.#SZCJobs Commercial Manager (Cost & Forecasting) (Sizewell C) Wilson James Sizewell C Job Responsibilities

  • Own and maintain the programme budget, cost baseline, and integrated financial forecast.
  • Maintain robust Estimate to Complete and Estimate at Completion positions.
  • Translate operational resource plans, material volumes, and activity forecasts into financial projections.
  • Monitor actual expenditure against budget and forecast and explain material variances.
  • Maintain visibility of purchase orders, subcontract commitments, accruals, and financial liabilities.
  • Lead the cost-control element of month end and maintain accurate cost-to-complete projections.
  • Track the financial impact of approved, anticipated and emerging change, including NEC3 Compensation Events.
  • Maintain clear visibility of revenue, cost, margin, risks, and opportunities.
  • Coordinate with Procurement, Finance, Project Controls, Operations and the Client Commercial Team. Other duties and responsibilities
  • Work in accordance with: o Wilson James policies, site procedures and training provided o Wilson James core values:  We are fair and honest in all our activities;  We treat each other with dignity and respect;  We are responsible for all our actions and accountable for their consequences;  We have an environment that enables and supports effective communication;  We will continuously develop safe systems of work to ensure no one is placed at risk in our workplaces. o Customer policies
  • Carry out any other reasonable request as required by your Line Manager or the Customer Qualifications Essential
  • Excellent written and verbal communication skills at working and management levels.
  • Advanced Microsoft Excel and financial-modelling capability.
  • CITB HS&E Managers and Professionals certificate (MAPS), or project-accepted equivalent.
  • Ability to satisfy all Sizewell C security, vetting and site access requirements.
  • Relevant commercial, cost-management, quantity-surveying or finance qualification, or equivalent experience. Desirable
  • A degree or equivalent qualification in a relevant discipline.
  • RICS, AAT, CIMA, ACCA or another relevant professional qualification. o A working knowledge of: o Major infrastructure, construction or nuclear programme environments o NEC contract environments and associated governance o Logistics and supply-chain commercial models o Project controls, financial reporting and cost-management systems Experience
  • Strong project cost management, commercial controls or financial forecasting experience.
  • Experience within logistics, construction, infrastructure or a comparable major programme.
  • Advanced budgeting, forecasting and cost-to-complete capability.
  • Demonstrable experience maintaining Estimate to Complete and Estimate at Completion positions.
  • Strong understanding of accruals, commitments, month-end reporting and financial reconciliation.
  • Experience maintaining revenue, cost, margin and change visibility across a complex contract.
  • Excellent numerical and analytical capability with strong Excel and financial-modelling skills.
  • Ability to interrogate complex data, explain variance and identify forward financial risk.
  • Working knowledge of NEC contracts, preferably NEC3, is desirable.
  • Ability to communicate complex financial information clearly to operational, commercial and client stakeholders. For this role you must have evidence of right to work in the UK. As a project, we do not discriminate on the grounds of age, gender, race, colour, religion, disability or sexual orientation, and we welcome applications from all sections of the community.

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