At Amentum, we're not just solving problems; we're engineering the future. Our team is driven by an unyielding commitment to innovation, integrity, and collaboration, tackling some of the most significant challenges in science, security, and sustainability. If you're passionate about making a real impact and want to be part of a community that values ethical excellence, this is the place where your ambition can thrive.

Here, we believe that success comes from continuously pushing boundaries and working together to deliver on our promises. We embrace challenges with confidence and are dedicated to creating a secure and vibrant future for all. 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 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. 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 Decommissioning Alliance (TDA) is a strategic partnership, operating within the DNWP framework and delivering critical decommissioning work at Sellafield, including the UK’s most challenging Legacy Ponds facilities.

As a key partner within DNWP, TDA contributes to Sellafield Ltd.’s mission while ensuring communities, supply chains, and stakeholders benefit from meaningful, measurable Social Value outcomes.

The Role

TDA now have an exciting opportunity for a Commercial Manager who will work closely with the Head of Strategic Projects, Workstream Leads and the PCM as part of the Strategic Projects Core Team.  Whilst also reporting to the TDA Commercial Manager as a functional reporting line.

The Commercial Manager will support all workstreams within Strategic Projects  from  a  client  contract  and  a  supply  chain  perspective.    Forging  an  assertive  but  collaborative relationship with both client and supply chain. 

As a Commercial Manager some of your responsibilities could include:

• Ensure that CEMAR is adequately maintained between TDA and the client whilst also ensuring CEMAR is set up and maintained with the supply chain (where appropriate) 

• Feed Strategic Projects commercial reporting into the wider TDA reporting requirements as required by the TDA Commercial Manager and the Head of PMO 

• Input into supply chain development and subcontract procurement, working with the Workstream Leads and Procurement Lead to ensure the best subcontract strategy is implemented for all projects. 

• Identifies and assembles the appropriate blend of commercial resources to meet the workstream’s needs and requirements. Works with the workstreams to ensure appropriate level of make vs buy and therefore the use of supply chain to support the TDA’s commercial construct. 

As a Commercial Manager you will already:

• Be educated to BSc in Quantity Surveying (or other equivalent commercially related discipline)

• Proven experience in a Commercial Manager or Senior QS role

• Demonstrable experience working on projects within large, multi- 
  project frameworks (c. £45m-£50m or similar)

• Strong working knowledge of NEC4 contracts, specifically Option A 
  (Lump Sum) and Option C (Target Cost) 

Our Culture
Our values are built on a strong foundation of safety, integrity, and respect for every individual. People are at the heart of our mission, and we believe in supporting one another through a culture of care and collaboration.

We strive to create a workplace where everyone feels they belong and can thrive. Supporting mental wellbeing and fostering a sense of connection are essential to how we work.

When we embrace different perspectives and work together, we become more innovative, more agile, and more successful.

We partner with VERCIDA, 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.