About this role
<p>The Sizewell C Jobs Service supports local people into exciting, long-term careers across our Project.#SZCJobs</p><p> </p> <p> </p> <p style="text-align:center"><strong>Senior Commercial Manager</strong><br><strong>Sizewell C</strong><br><strong> </strong></p> <p>Contract Type: Permanent - Office-based with hybrid flexibility (typically 3 days p/w in the office) <br>Working Pattern: Full time<br>Closing Date: Thursday 30th July 2026<br>Location: London<br>Salary: Circa £78,000 depending on experience<br>Bonus: 5% annual incentive<br>Pension: Up to 7.5% employee contribution / 15% employer contribution<br>Holiday: 28 days plus bank holidays<br>Benefits: Flexible benefits</p> <p> <br><strong>Impact:</strong></p> <p><br>Sizewell C is one of the UK's most ambitious infrastructure projects—a next-of-a-kind nuclear power station that will deliver clean, reliable energy for generations. Following our Final Investment Decision, construction is fully greenlit. This is your opportunity to play a key role in delivering a nationally significant project that will support Britain's energy security and Net Zero ambitions.<br> </p> <p>We’re looking for a seasoned commercial professional with extensive experience delivering major programmes, ideally within heavy civils or large-scale engineering and infrastructure projects valued between £10m and £100m+. You’ll bring a deep understanding of construction technology, cost drivers, and supply chain management, combined with strong working knowledge of NEC3/NEC4 contracts—particularly in contract management and administration. Your ability to draft position papers, author change events, evaluate complex quotations, and produce clear commercial reports will set you apart.</p> <p> <br><strong>What You’ll Doing:</strong><br> </p> <p>Leading the commercial management of major design programmes within heavy civils or large-scale engineering and infrastructure projects. <br>Managing and administering NEC3 and NEC4 PSC and bespoke SZC contracts, ensuring compliance with contract conditions and effective delivery. <br>Preparing and maintaining key commercial documentation, including early warning notices, compensation events and programme submissions. <br>Drafting position papers, prepare commercial reports and author change events to support project decisions. <br>Applying your understanding of construction technology, cost drivers and supply chain management to optimise outcomes. <br>Mentoring and developing Commercial Managers and Assistant Commercial Managers, building capability across the commercial function. <br>Engaging with senior stakeholders and clients, providing clear advice and updates. <br>Taking ownership of challenges and deliver solutions from start to finish.<br>Contributing to strategic commercial planning and decision-making to support project success. <br> </p> <p><strong>What You’ll Bring </strong></p> <p><br>Proven experience in major projects and NEC3/4 contracts <br>Strong commercial, negotiation, and stakeholder management skills <br>Knowledge of UK contract law and procurement best practices <br>Degree or equivalent experience <br>Professional membership (RICS, ICES, CIOB, CIPS) desirable or working towards chartership. <br> </p> <p><strong>Why Join Us </strong></p> <p><br>A major infrastructure project with national impact <br>Hybrid working with flexibility built in <br>Competitive salary, bonus and benefits <br>Clear progression and development opportunities <br>Supportive, collaborative team environment</p> <p> <br><strong>Behavioural Competences</strong></p> <p> </p> <p>Humility</p> <p>Recognise the value brought from different cultures and experiences.<br>Be open to other’s points of view and ideas, be willing to debate and to compromise.<br> </p> <p>Positivity</p> <p>Positively challenge poor quality and performance.<br>Identify solutions at the lowest possible level.<br>Encourage others to bring new ideas forward.<br> </p> <p>Respect</p> <p>Value the rules and environment in which we operate.<br>Give and receive feedback with respect.<br>Embrace and engage with new people and ideas.<br> </p> <p>Solidarity</p> <p>One team, working closely together and helping each other.<br>Empowered teams always looking forward.<br>Shared responsibility for delivery the project outcomes.<br> </p> <p>Clarity</p> <p>Communicate clearly and consistently.<br>Promote collaboration and team alignment.<br>Clearer and faster decision making.<br>Drive simplification at all levels.<br> </p> <p><br>If this sounds like the next step in your career, we’d love to hear from you. Apply today. </p> <p> </p> <p> </p><p> </p> <p>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.</p>