Cost Engineer

About the Opportunity:

Amentum is expanding its ability to support a growing portfolio of projects across the Defence, Nuclear, Energy, Environment and Government-Owned Critical Infrastructure sectors. We are seeking talented people who are motivated by technical problem-solving, collaboration and the opportunity to deliver innovative solutions for some of the UK's most significant infrastructure projects.

The Cost Engineer is accountable for establishing and operating the programme cost management capability for the FCAS Infrastructure Programme.

The role will develop the cost control framework, portfolio baselines, forecasting models and reporting processes required to support effective financial governance and investment decision-making across the programme. The Cost Engineer will provide the foundations for robust cost management, forecasting and assurance as the portfolio scales from mobilisation through to full delivery, you will be establishing and maintaining the programme cost management framework, ensuring accurate forecasting, cost control, affordability assessment and performance reporting across the FCAS infrastructure portfolio.

Key Responsibilities

• Cost Estimation & Budgeting: Develop comprehensive cost estimates, budgets, and financial forecasts for complex projects, ensuring accuracy and alignment with business objectives.
• Cost Control & Monitoring: Track expenditures, analyse variances, and implement corrective actions to keep projects within budget.
• Financial Reporting: Prepare and present detailed financial reports (e.g., EAC, Forecast to Go, VOWD) to project teams, management, and client.
• Stakeholder Collaboration: Work closely with project managers, engineers, procurement, and commercial teams to provide financial insights and support decision-making.
• Risk Management: Identify cost risks and opportunities, providing recommendations for cost optimization and savings.
• Process Improvement: Contribute to the development and enhancement of cost control procedures, tools, and systems.

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.

Here’s What You’ll Need:

Essential

• Major infrastructure, construction or capital programme experience.
• Cost control and forecasting experience within complex project environments.
• Strong understanding of programme controls principles.
• Experience developing portfolio-level cost reporting.
• Advanced Excel and cost modelling capability.
• Strong analytical and stakeholder management skills.
• Candidates must be able to obtain and maintain Security Check (SC) clearance and/or meet applicable security verification requirements.

Desirable

• Defence, aerospace or regulated industry experience.
• ACostE, RICS, APM or equivalent professional qualification.
• Experience with EcoSys, Primavera P6 and Power BI.
• Quantitative risk analysis experience.
• Understanding of NEC contracts and commercial management.
• Experience supporting major programme business cases and investment decisions.

What’s in It for You:

• Competitive salary and benefits package, with unrivalled salary sacrifice schemes available.
• Free single medical cover and digital GP service.
• Generous pension contributions.
• Enhanced parental leave and family-friendly policies.
• Professional development support and membership reimbursement.
• Access to a flexible benefits programme tailored to your needs, including buying or selling up to 10 days’ extra holiday.
• Hybrid and flexible working options to support work–life balance.

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 [email protected]