Full job description

Role OverviewA Matchtech client is seeking a highly experienced Senior Commercial Manager to play a critical role in the delivery of one of the UK’s most significant nuclear projects - Sizewell C. This role will lead commercial strategy, contract management, and financial control across major work packages. You will be required to be in the London Office 3 days a week.
The successful candidate will bring extensive NEC contract expertise and a proven track record of delivering major capital projects (£200m+), ideally within nuclear, energy, or regulated infrastructure environments.
Key Responsibilities*Lead the commercial management of major contracts and work packages across the Sizewell C project.
*Provide expert-level NEC contract administration, ensuring compliance and best practises across all project phases.
*Establish and drive commercial strategy, including cost management, risk mitigation, and value optimisation.
*Manage contractual negotiations, change control, claims, and dispute resolution.
*Deliver robust cost forecasting and reporting, ensuring alignment with project budgets and financial targets.
*Partner with delivery, engineering, and project controls teams to ensure integrated project execution.
*Identify and manage commercial risks and opportunities, ensuring proactive mitigation strategies are implemented.
*Provide leadership and mentoring to commercial teams, ensuring a high-performance culture.
*Support procurement strategies, supplier engagement, and contract award processes.
*Interface with key stakeholders including clients, contractors, regulators, and joint venture partners.
Key RequirementsEssential Experience*Significant experience operating as a Commercial Manager / Senior Commercial Manager on large-scale infrastructure projects.
*Demonstrable experience delivering major capital projects valued at £200 million+.
*Strong expertise in NEC contracts (NEC3 and/or NEC4), including hands-on administration.
*Proven track record in:*Contract negotiation and management
*Change control and claims resolution
*Cost management and forecasting

*Experience leading commercial teams and managing complex supply chains.
*Strong stakeholder management skills across multidisciplinary teams.
Desirable Experience*Experience within:*Nuclear sector
*Energy / Power generation projects
*Other highly regulated industries (utilities, infrastructure)

*Understanding of UK regulatory frameworks for major infrastructure projects.
*Experience working within alliance or joint venture project structures.
Skills & Competencies*Excellent commercial acumen with a strategic mindset
*Strong analytical and problem-solving capabilities
*Effective leadership and team development skills
*High level of negotiation and influencing skills
*Strong communication skills, both written and verbal
*Ability to work in a high-pressure, complex project environment
Qualifications*Degree-qualified (or equivalent) in Quantity Surveying, Commercial Management, Engineering, or related discipline.
*Professional membership (e.g., RICS, CICES, or equivalent) is highly desirable.
Why this role?*Opportunity to work on one of the UK’s most transformative energy infrastructure projects.
*Be part of a critical programme critical
*Collaborative, high-performing environment with complex, impactful work.