Senior 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

We employ the UK's most experienced and skilled technical services professionals and has grown to over 8,000 people in locations across the UK - we provide the resources to turn great ideas into reality, and we offer capable and committed individuals the opportunity to shape their careers how they wish.

Hinkley Point C (HPC) is the first new nuclear power station to be built in the UK in over 20 years, HPCs two EPR reactors will be capable of generating 3.26GW of secure, low carbon electricity for 60 years, enough electricity to power around 6 million homes. In addition to the projects ‘clean energy’ benefits, HPC will create thousands of jobs and bring lasting benefits to the UK economy.

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

We employ the UK's most experienced and skilled technical services professionals and has grown to over 8,000 people in locations across the UK - we provide the resources to turn great ideas into reality, and we offer capable and committed individuals the opportunity to shape their careers how they wish.

Hinkley Point C (HPC) is the first new nuclear power station to be built in the UK in over 20 years, HPCs two EPR reactors will be capable of generating 3.26GW of secure, low carbon electricity for 60 years, enough electricity to power around 6 million homes. In addition to the projects ‘clean energy’ benefits, HPC will create thousands of jobs and bring lasting benefits to the UK economy.

We are seeking an experienced Senior Commercial Manager to lead the commercial management of the site installation and commissioning scope of the Turbine Contract.

This is a strategically important leadership role at a pivotal stage in the contract's evolution as the installation scope undergoes contractual changes, creating a unique opportunity to influence commercial outcomes, shape new ways of working, and drive a collaborative approach between Employer and Contractor teams.

Reporting to the Commercial Lead, the Senior Commercial Manager will lead the site commercial management team and provide commercial leadership across the installation and commissioning works. The role will be responsible for ensuring robust cost management, commercial governance, contract administration and supply chain oversight while supporting the successful delivery of project objectives.

The successful candidate will be a commercially astute leader with experience managing major infrastructure, energy, construction or engineering projects, ideally within complex target cost or reimbursable contracting environments.

Key Responsibilities

Lead and develop the commercial management team acting as the senior commercial representative responsible for the installation and commissioning scope.

Implement the roll-out and ongoing management of the new target cost commercial model. Develop and embed the processes, controls and governance required to support the efficient running of the model.

Drive integrated ways of working between Employer and Contractor commercial teams.

Oversee cost forecasting, Estimate at Completion (EAC) development and cost performance reporting. Create and track commercial KPI's.

Monitor Contractor resource levels and forecast staffing requirements against project needs.

Challenge forecast costs, productivity assumptions and resource allocations to ensure value for money.

Identify and implement opportunities to improve efficiency and reduce overall delivery costs.

Review and challenge defined cost submissions, applications for payment and supporting evidence.

Apply disallowed cost provisions fairly and consistently.

Support the management of compensation events, variations, claims and commercial negotiations as required.

Experience & Qualifications

Significant commercial management experience on major infrastructure, construction, energy or engineering projects.

Proven experience leading commercial teams within complex project environments.

Strong experience in cost management, forecasting, reporting and commercial governance.

Demonstrable experience administering major forms of contract and managing contractual change .

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 www.vercida.com 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.

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