Commercial Lead (Governance, Performance & Assurance) in London

London Office-based, with hybrid working flexibility. Full time. Closing date: Friday 31st January 2026.

Why Join Us

Sizewell C is a once-in-a-generation infrastructure project powering Britain's energy security and net-zero ambitions for decades. Following our recent Final Investment Decision, construction is fully greenlit. This is your chance to be part of the largest investment in homegrown clean energy in decades, delivering low-carbon electricity to 6 million homes for at least 60 years.

Benefits

• Starting salary of £90,000 (depending on experience)
• Holiday: 28 days + bank holidays
• Pension: Up to 7.5% employee / 15% employer contribution
• Flexible benefits & hybrid working options

The Opportunity

You will be responsible for embedding governance, performance and assurance across the project's complex supply chain, helping us deliver a safer, smarter and more sustainable future. From shaping governance frameworks to driving assurance reviews, you will be at the heart of how we manage commercial risk and performance.

Key Responsibilities

• Overall leadership of the Governance, Performance and Assurance services across the Supply Chain Directorate, including direct line management of staff and people managers.
• Develop and maintain processes and toolkits to support the commercial and procurement lifecycle.
• Establish and maintain relationships between improvement initiatives, governance, strategy and planning functions across the company, aligned to the company vision and Sizewell C's supply chain.
• Oversee improvements to governance processes, ensuring alignment with Project Controls, PMO Operations, and Project Excellence functions.
• Manage the Performance Management Framework with appropriate reporting cadence for multiple stakeholders including Executive Office, Investors, Government, and Ofgem.
• Represent the Directorate on governance forums and panels, including inter-regulatory working groups.
• Ensure compliance with Sizewell C's unique regulatory environment, including RAB licence conditions, Ofgem reporting requirements (RIGs – Regulatory Instructions and Guidance), ONR nuclear site licence conditions, and Environment Agency requirements.
• Manage baseline training implementation and ensure project awareness of baseline requirements.
• Oversee requirements management frameworks and traceability systems.
• Develop and implement data-driven reporting systems, leveraging data platforms to empower decision-makers.

Skills & Experience

• Significant experience in delivering governance, performance and/or assurance activities at a senior level, in highly regulated industries or nuclear environments.
• Commercial management experience with NEC and/or FIDIC contracts, ideally including Professional Services Contracts (PSCs) or embedded contractor arrangements.
• Strong understanding of UK regulatory frameworks, with advantage if you have experience with:

• Nuclear site licence conditions and ONR requirements.
• Regulated Asset Base (RAB) models or similar regulated infrastructure frameworks.
• Government entities, e.g. HM Treasury, DESNZ.

Key Competencies

• Humility: Recognise the value brought from different cultures and experiences. Be open to others' points of view and ideas, be willing to debate and to compromise.
• Positivity: Positively challenge poor quality and performance. Identify solutions at the lowest possible level. Encourage tier 1s and others to bring new ideas forward.
• Respect: Value the rules and environment in which we operate. Give and receive feedback with respect. Embrace and engage with new people and ideas.
• Solidarity: One team, working closely together and helping each other. Empowered teams always looking forward. Shared responsibility for delivery the project outcomes.
• Clarity: Communicate clearly and consistently. Promote collaboration and team alignment. Clearer and faster decision making. Drive simplification at all levels.

Apply Now

If this sounds like the next step in your career, we’d love to hear from you. To be appointed to this role, you will need to meet the criteria for Security Vetting, which will, ordinarily, require you to have been a resident of the UK for at least three of the past five years.