Commercial Manager
Sizewell C
Location: London, IpswichContract: Permanent, full-time.Closing date: Thursday 23rd July 2026
What’s in It for You
- Salary: Circa £63,522 (depending on experience)
- Bonus: 5% annual target
- Holiday: 28 days + bank holidays
- Pension: Market‑leading (up to 7.5% employee / 15% employer)
- Benefits: Health cover, cycle‑to‑work scheme, Hybrid working & ongoing professional development
The Commercial Manager is responsible, for any contract assigned to them, for all pre and post contract commercial issues relating to a contract on the SZC project.
Nature and Scope
The Commercial Manager is an important role within the SZC Supply Chain Group with accountability to the Senior Commercial Manager for the successful commercial administration of one or more SZC contracts. As such the Commercial Manager is empowered to make decisions around the Principle Accountability areas, under the overall guidance of the Senior Commercial Manager and in accordance with delegated levels of authority. As Commercial Manager you will be the primary point of commercial contact on the contract/s assigned to you and will you’ll be required to work closely and pro‑actively with the other stakeholders at all levels and across all the teams within Nuclear New Build to ensure that the requirements of the individual contracts and their impact upon the overall SZC Project are successfully delivered.
Responsibilities
- Key site operational based service contracts essential to delivery of workforce needs such as catering, accommodation, PPE, transport, security and health and wellbeing.
- Typically responsible for a contract or range of contracts between £0‑£50m in value subject to level of risk or complexity. Contracts are typically from the NEC suite, managed on Cemar.
- Day‑to‑day management of Assistant Commercial Assistants under your control.
- Providing commercial management of contracts during the execution phase (post‑award).
- Commercial management for the delivery of contract final account agreements (close out).
- Responsible for the delivery of the contract in accordance with SZC governance requirements to meet SZC Project and business objectives.
- Professional development of self and people within the team.
Principal Accountabilities
Execution Phase
As Commercial Manager you’re responsible for the commercial administration of the contract during the execution phase including commercially leading and managing the contract/s to successful completion to maximise operational and financial performance and minimise commercial risk in order to help support the safe and cost effective delivery of SZC programme and business objectives.
- Know the contract including fundamental matters such as Scope of Work / Services and Associated Programme; Prices and Rates Schedules; Key Personnel and Arrangements for Contract Administration, incentive arrangements along with administration of commercial management tools including, but not limited to, CEMAR and SAP.
- Participate in the contract kick‑off meeting and organise the Supply Chain section of the meeting.
- Commercially administer the contract including Notices and Instructions; Applications, Invoicing and Payment; Variations and Changes; Disputes and Claims; Delays, Extensions of Time, Force Majeure and Liquidated Damages; Bonds and Guarantees; Intellectual Property Rights; Termination; Progress Monitoring and Financial Reviews; Liabilities; Confidentiality Agreements; etc.
- Manage all commercial correspondence and contractual notices issued in accordance with the contract conditions and SZC Supply Chain Procedures.
- Ensure timely production and administration of payment applications and invoices.
- Ensure contractual deliverables are met.
- Lead contract commercial reviews and attend progress reviews where necessary.
- Recommend mitigating actions on all commercial risk/claim events at the earliest possible time.
- Implement contract commercial / financial reporting and participate in periodic contract reviews.
- Participate in contractor performance management.
- Maintain contract commercial files and cost records.
- Lead commercial reviews of contractors’ delivery and attend valuation, progress and risk reviews where necessary.
Closeout Phase
Our Commercial Managers have responsibility and accountability for managing the close‑out phase of each contract including managing the contract Supply Chain Team in the implementation of the strategy for collaborative working by adopting a ‘One Team’ integrated approach with ‘parallel’ working rather than ‘serial’ working. At all times provide commercial support to the Project Manager in the effective delivery of the contract and ensuring formal contract commercial completion and closure of all the Project Contracts and identification and recording of commercial lessons learnt. At all times operate in accordance with IMS, rules, procedures to ensure that all contracts are administered within delegation of authority and the overall SZC governance / assurance regime.
Knowledge, Skills, Qualifications & Experience
- Strong communication skills are key, both written and verbal, to command professional respect at all levels.
- Educated to relevant A Level is preferable.
- Able to demonstrate a noteworthy track record of administering successful contracts.
- Effective commercial/contract management skills are essential, with clear knowledge of best practice contract methodologies.
- Strong numerical skills, and commercial ability to make sound decisions on matters of financial value.
- Understanding of contract performance measurement, risk management and change and claim management.
- Familiarity with most common Forms of Contract (NEC) within the power construction industry and major projects and programme environment; with particular knowledge of UK Law and its impact upon the contract and commercial function is essential.
- Good understanding of the UK regulatory framework.
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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