Commercial Manager

Amentum will 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.

About the Opportunity

The Commercial Manager will work collaboratively with the other Commercial Managers within the small team to provide commercial support to successfully manage the Responsible Designer (RD) contract on HPC, acting as the first line of commercial contact to the HPC Project and Engineering community for commercial RD matters.

It is envisaged that the successfully applicant will manage the commercial aspects for a defined scope area(s) of the RD contract and provide support to the Commercial Assistant activities that are completed within the team.

Key Responsibilities

• Ensuring all principal accountabilities for the contract commercial team are implemented in accordance with HPC commercial procedures.

• Adopting the role of ‘Intelligent Customer’, ensuring that stakeholder expectations are met regarding commercial probity, value and that the supply chain is treated fairly and equitably.

• Leading in the engagement with the supply chain based on collaborative working principles and applying the skills of supporting, coaching, enabling and facilitating team members through change; thereby building and maintaining effective relationships with key stakeholders.

• Managing a key scope of work in the commercial management of contracts during the execution phase – including the management of change via Compensation Events.

• Overseeing contract commercial relationships. Work with collaborative behaviours in a spirit of mutual trust and cooperation. Seeking to achieve equitable outcomes for all parties to facilitate early commercial close-out of contentious topics.

• Consideration of the nuclear baseline and distribution of nuclear safety significant responsibilities within the team; ensuring people are aware of the needs of a strong nuclear safety culture.

• Professional development of self and people within the team.

• Responsibilities under the approved Supply Chain Policy managing contracts and being a direct interface with the supply chain to ensure an embedded nuclear safety culture; the right level of oversight, control and surveillance of contractor activities are set up in HPC and the supply chain.

Education, Experience and Skills:

• Strategic thinking, data / facts centric

• Ability to engage and influence Senior Stakeholders in a complex environment

• Effective commercial / contract management skills

• Able to demonstrate an extensive track record of managing Commercial Teams and administering NEC3 PSC contracts

• Ability to make sound decisions on matters of significant financial value

• Good understanding of contract performance management, risk management, and change management

• High levels of IT literacy, including MS Excel and SAP

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 team.