Senior Commercial Manager

Sizewell C; Leiston; Hybrid; GBP 82,000 - 86,000; Full time

Benefits offered by this job

5% CIP bonus

28 days holiday

Pension 7.5%/15% employer

Ongoing professional development

Other lifestyle benefits

Job summary

Sizewell C is seeking a Senior Commercial Manager to lead procurement and contract management on a major nuclear programme. The hybrid role is based in Leiston, Suffolk with a minimum of three days on site.

You will manage commercial relationships, drive procurement strategies and work with internal and external stakeholders to ensure timely delivery within governance standards. The role offers strong development opportunities and a competitive package.

Qualifications

• Member of a recognised professional body (RICS/ICE/CICES/IOB or equivalent).
• Experience in procurement and post-procurement phases in complex major projects.
• Evidence of managing complex procurements and administering contracts.

Responsibilities

• Deliver regular reporting on contract scope of work/services, schedule, prices, key personnel and incentives.
• Manage contract commercial relationships and support Project Manager to ensure effective delivery and mutual commercial outcomes.
• Contribute to procurement and contracting strategies that meet project objectives and keep procurement on schedule.
• Administer vendor assessment and information exchange via procurement portals; prepare tenders and evaluate them.
• Governance and budgeting support to enable timely contract awards and closeouts.

Skills

Negotiation

Leadership

Procurement

Contract management

Communication

Education

Degree level

Tools

CEMAR

SAP

Job description

Senior Commercial Manager

Location: Hybrid, Leiston, Suffolk (minimum 3 days per week onsite).

Employment type: Permanent full-time.

Salary: Circa £82,000 - £86,000 per annum -dependent on experience

Benefits

• 5% CIP bonus
• 28 days holiday, plus bank holidays
• Contributory pension of up to 7.5% employee/15% employer
• Ongoing professional development
• Other lifestyle benefits

Closing date: 02/10/2026

Scope and nature of role

TThThe Senior Supply Chain Manager:

reports to a Supply Chain Lead and is the primary point of contact for all supply chain/commercial matters relating to a supplier/contract assigned to them.

works closely and pro-actively with internal and external stakeholders at all levels. This includes working as part of a multi-disciplinary team within a technically complex Programme.

at all times promotes the SZC Project, its values and behaviours and ensures that SZC Project requirements are met and successfully delivered.

is empowered to make decisions and undertake its Principal Responsibilities and Accountabilities (as defined below) in the context described above and in accordance with delegated levels of commitment and authority.

Due to the phase of the SZC Project (contract formation activity is starting), for the right individual this is a progressive role and this means there is scope for role growth (as responsibilities and accountabilities of the Senior Supply Chain Manager develop/progress as the SZC Project develops).

Principal Responsibilities and Accountabilities

• Having at all times the knowledge and being responsible for the regular reporting of topics including: contract scope of work/services; schedule; pricesand rates; key personnel; and incentive arrangements.
• Managing the contract commercial relationship and at all times providing support to the Project Manager to ensure effective delivery of the contract. In particular, establish effective collaborative arrangements and work in a spirit of mutual trustand cooperation to achieve win-win' equitable commercial outcomes.

Contract formation

• Contributing to procurement and contracting strategies that meet the overall SZC Project objectives.
• Managing and tracking a procurement against the overall Integrated Work Schedule (IWS) milestones to meet stakeholder and SZC Project requirements and keeping the procurement on schedule.
• Undertaking correct administration of vendor assessment' and information exchange via procurement electronic portal tools.
• Invitation to tender preparation and tender evaluation assessing technicaland commercial compliance.
• Managing formation activities across technical, programme, legal and commercial disciplines.
• Support to the budget process and analysing the commercial requirements of a contract.
• support to the Commercial Lead in ensuring all internal governance approval is in place to enable timely Contract Award.

Post contract management

• Managing contracts in accordance with the contract terms, SZC governance requirements and SZC Project objectives to achieve a successful close.
• Ensuring compatibilityand alignment with other SZC Project contracts.Administration of commercial management tools including, but not limited to, CEMAR and SAP.
• In the closeout phase the Senior Commercial Manager will have responsibilityand accountability for managing the close out of each contract and identifying and recording commercial lessons learnt.

Other

• Deliver contracts in accordance with NNB governance requirements to meet NNB SZC Project and business objectives.
• Supervision of Supply Chain Managers and Supply Chain Assistants under their control.
• Internal and external stakeholder management and working within a multi-disciplinary team/teams.
• Being familiar with, promoting and maintaining compliance at all times (at procurement and post-procurement stages) with NNB's Supply Chain policies (including compliance with nuclear safetyand quality controls procedures) and SZC Project processes and procedures, particularly those relating to the Supply Chain.
• Engagement as required with the UK regulators (ONR/EA/CNS), HM Government and Ofgem.
• Promoting the role of the Intelligent Customer and ensuring that requirementsand expectations are met with regard to commercial probity, valueand that the supply chain is treated fairly.
• Promoting and embedding a strong nuclear safety culture, the right level of oversight, controland surveillance of supplier activities.
• Ensuring board papers and/or investment papers are producedand submitted all in accordance with SZC Project governance.
• Demonstrate collaborative working practices, promote continuous improvement, the SZC Project's values and acting in a spirit of mutual trustand cooperation.
• Professional development of self and people within the team.

Knowledge, Skills, Qualifications and Experience

Essential

• Member of RICS/ICE/CICES/IOB or equivalent professional body.
• Proven ability of working within a complex major project/programme environment in both procurement and post-procurement phases.
• Evidence of successfully undertaking complex procurements and of administering contracts.
• Effective Management and Leadership skills, with clear knowledge of best practice contract methodologies in the UK environment.
• Honed commercial skills and demonstrable ability to make sound decisions on complex matters (considering technical and commercial topics) of high financial value.
• Good understanding of procurement, contract performance measurement, risk management and change and claim management.
• Excellent negotiating, influencing and communication skills.
• Excellent problem-solving skills.
• Experience of working in a dynamic environment with multiple stakeholders.
• Experience of standard forms of contract (NEC and FIDIC) within the power/construction industry on complex major projects/programmes.
• Possesses skills to act as deputy.

Desirable

• Educated to degree level
• Familiar with the nuclear site licence conditions and the nuclear baseline philosophy.
• Understanding of the UK regulatory framework.
• Understanding of UK and international supply chain within the nuclear sector.
• Knowledge of English law and its impact upon the contract and commercial function.