Job Description Commercial Lead (Governance, Performance & Assurance) Location: London Contract Type : Office-based, with hybrid working flexibility Working Pattern : Full time Closing date : Friday 31st January 2026 Why Join Us? We’re building the future. Sizewell C is a once-in-a-generation infrastructure project that will power Britain’s energy security and net-zero ambitions for decades to come. 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. Which along with renewables, will support Britain to achieve Net Zero by 2050. We’re looking for a Commercial Lead within the Governance, Performance & Assurance team, to help us deliver one of the UK’s most ambitious infrastructure projects. If you’re ready to make a meaningful impact, this is your opportunity. What’s in It for You Salary: 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 As Commercial Lead (Governance, Performance & Assurance), you'll manage and develop a team of high performing professionals delivering value to the company and driving efficiency and performance. Provide day to day leadership by setting high performance expectations playing a pivotal role in ensuring the Supply Chain Directorate at Sizewell C operates with clarity, consistency and confidence. You’ll 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'll be at the heart of how we manage commercial risk and performance. Working at the intersection of multiple regulatory bodies – including the Office for Nuclear Regulation (ONR), Environment Agency, and Ofgem – you'll ensure our processes are aligned, effective and future-ready. You'll collaborate with senior leaders, major contract partners and subject matter experts across our supply chain encompassing over 300 UK suppliers. 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. The role establishes and maintains relationships between improvement initiatives, governance, strategy and planning functions across the company, aligned to the company vision and Sizewell C's supply Chain. Overseeing improvements to governance processes, ensuring alignment with Project Controls, PMO Operations, and Project Excellence functions. Managing the Performance Management Framework with appropriate reporting cadence for multiple stakeholders including Executive Office, Investors, Government, and Ofgem. Representing the Directorate on governance forums and panels, including inter-regulatory working groups. Ensuring 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. Managing baseline training implementation and ensuring project awareness of baseline requirements. Overseeing requirements management frameworks and traceability systems Assurance and Reporting. Developing and implementing data-driven reporting systems, leveraging data platforms to empower decision-makers. Skills & Experience We are looking for a Commercial Lead (Governance, Performance & Assurance) who thrives on clarity, collaboration and accountability in complex regulatory environments whose experience includes: 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). Strong knowledge of e-tendering, contract database principles and standard business tools Proven project management and contract management skills. Ability to distil complex information into clear, actionable requirements for diverse stakeholder groups. Confidence engaging with stakeholders at all levels, including senior leadership, government entities, economic regulators, and nuclear regulators. Understanding of supply chain assurance principles and ESG governance requirements. Why Join Us A major infrastructure project with national impact Hybrid working with flexibility built in Competitive salary, bonus and benefits Clear progression and development opportunities Supportive, collaborative team environment Key Competencies Humility Recognise the value brought from different cultures and experiences Be open to other’s 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 If this sounds like the next step in your career, we’d love to hear from you. Apply now and be part of something extraordinary. 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.