We'll inspire and empower you to deliver your best work so you can evolve, grow and succeed – today and into tomorrow. We offer an exciting range of opportunities to develop your career within a supportive and diverse team who always strive to do the right thing for our people, clients and communities.
People are our greatest asset, and we offer a competitive package to retain and attract the best talent.
In addition to the benefits you'd expect, UK employees also receive free single medical cover and digital GP service, family-friendly benefits such as enhanced parental leave pay and free membership of employee assistance and parental programmes, plus reimbursement towards relevant professional development and memberships. We also give back to our communities through our Collectively program which incorporates matched-funding, paid volunteering time and charitable donations.
Work-life balance and flexibility is a key focus area for us. We're happy to discuss hybrid, part-time and flexible working hours, patterns and locations to suit you and our business.
About The Opportunity
The DNWP Lot 1 Remediation Framework and Integrated Asset Care (IAC) Framework are cornerstone programmes within the UK's nuclear decommissioning mission. These multi-billion-pound initiatives underpin the safe remediation of high-hazard legacy facilities at Sellafield and set the foundation for future strategic programmes such as PACE (Project Asset Care Execution). Delivering these programmes demands world-class commercial leadership, governance, and innovation.
We are seeking an experienced Programme Commercial Manager to lead the commercial function across a portfolio of major nuclear programmes. Operating at programme and portfolio level, you will provide strategic commercial leadership, ensuring robust governance, NEC4 compliance, and proactive risk management. This role carries line management responsibility for a high-performing team and requires strong stakeholder engagement across client, regulatory, and internal governance frameworks.
Roles and Responsibilities:
* Strategic Leadership: Develop and implement integrated commercial strategies, systems, and controls across the programme portfolio.
* Governance & Compliance: Ensure full NEC4 compliance, embedding commercial schedules, risk registers, and mitigation strategies.
* Performance & Insight: Drive benefit realisation, forecasting, and scenario modelling to inform executive decision-making.
* Team Leadership: Lead, mentor, and develop a multi-disciplinary commercial team, fostering a culture of excellence and continuous improvement.
* Stakeholder Engagement: Act as a trusted advisor to senior leadership, clients, and regulators, ensuring alignment with programme objectives and governance standards
* Change & Risk Management: Oversee change control, commercial risk mitigation, and lessons learned processes to optimise outcomes.
Here's What You'll Need
* Proven track record in programme-level commercial leadership on major infrastructure or remediation programmes (£500m+).
* Expertise in NEC4 contract management, commercial forecasting, and risk management (CEMAR, ATAMIS experience desirable).
* Strong leadership capability with experience managing and developing high-performing teams.
* Degree-qualified in a relevant discipline (e.g., Commercial Management, Quantity Surveying, Law, Business).
* Experience in regulated environments (nuclear, defence, or similar high-hazard sectors).
* Professional accreditation (e.g., MRICS, MCIPS, APM).
* Experience in nuclear decommissioning or remediation programmes.
* Knowledge of UK Government major project governance and assurance frameworks.
Any offer of employment will be strictly subject to the relevant security requirements for the role being met. This means that you will need to have, or be able to obtain, Baseline Personnel Security Standard (BPSS) clearance and either Security Check (SC) or Developed Vetting (DV) clearance. The security clearance process may require non-British nationals or dual nationals (i.e. those with British and another nationality) to be subject to additional evaluation, depending on nationalities held and the nature of the work to be carried out
Our Culture:
Our values stand on a foundation of safety, integrity, inclusion and diversity. We put people at the heart of our business, and we genuinely believe that we all succeed by supporting one another through our culture of caring. We value positive mental health and a sense of belonging for all employees.
We aim to embed inclusion and diversity in everything we do. We know that if we are inclusive, we're more connected, and if we are diverse, we're more creative. We accept people for who they are, regardless of age, disability, gender identity, gender expression, marital status, mental health, race, faith or belief, sexual orientation, socioeconomic background, and whether you're pregnant or on family leave. This is reflected in our wide range of Global Employee Networks centered on inclusion and diversity.
We partner with VERCIDA to help us attract and retain diverse talent. For greater online accessibility, please visit to view and access our roles. As a Disability Confident employer, we will interview all disabled applicants who meet the minimum criteria for a vacancy. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.
If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the
Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.