Job Description

At Amentum, well inspire and empower you to deliver your best work so you can evolve, grow and succeed - today and into tomorrow. With more than 55,000 people in 40+ countries, working at Amentum offers 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 Amentum's 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, 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 Amentum. We're happy to discuss hybrid, part-time and flexible working hours, patterns and locations to suit you and our business. About the Opportunity Join Amentum - Drive the UK's Most Critical Infrastructure Programme Location: Theale, Reading (Hybrid) | Sector: High-Security Infrastructure Amentum, in partnership with our client, is delivering the Non-Nuclear Engineering Partnership (NNEP) - a major programme covering all non-nuclear built environment assets. We're looking for a commercially driven Quantity Surveyor to help lead cost and contract management across high-security, nationally significant projects. This role spans the full project lifecycle - from tender to close-out - supporting delivery teams with planning, reporting, and change control, while ensuring data integrity. Your expertise will shape outcomes that matter. Apply now and help deliver critical infrastructure with lasting impact. Key Tasks - High-Impact Projects: You'll work on secure, long-term projects that genuinely shape the UK's future infrastructure landscape. - Full Lifecycle Exposure: From early procurement strategy through to contract negotiation, administration, and final account closure, your commercial expertise will be central. - Collaborative Leadership: Partner with Project Managers, Controls teams, and Operational leads-shaping commercial outcomes and mentoring others along the way. - Dynamic Environment: Operate at the forefront of NEC contract management and strategic subcontractor engagement in a fast-paced, technically complex environment. - Guide and coach operational teams on contracts, procurement, risk and profitability. - Shape and manage subcontract strategy using NEC suite contracts. - Work closely with Project Controls to ensure accurate cost forecasting and performance reporting. - Drive commercial clarity and resolve issues before they escalate. - Support strategic decision-making with business development and delivery teams. Qualifications and Experience - Degree in Quantity Surveying, Law, Engineering, Finance or Commerce (preferred). - Solid NEC3/4 experience and contract law know-how. - Proven success in commercial roles with leading infrastructure or construction contractors. - Strong communication and stakeholder management skills. - Eligible for UK security clearance. 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 truly believe that by supporting one another through our culture of caring, we all succeed. We value positive mental health and a sense of belonging for all employees. Find out more about life at Amentum. 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 express