Cost Engineer

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.

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

Amentum Technology has exciting opportunities for talented and enthusiastic Cost Engineers to strengthen our established capability and support the continued growth of our business.

We’re looking for a Cost Engineer who bring a positive, proactive, can‑do attitude to their work. You’ll thrive here if you enjoy solving problems, taking ownership and helping project teams make informed decisions. This role requires the successful candidate to be in the office in Birchwood 2 days per week.

You'll have strong Excel skills, confident communication, and the ability to build effective relationships with stakeholders at all levels are essential. If you’re someone who likes to get into the detail, spot issues early and create clarity from complexity, you’ll fit right in.

You will support Project Managers in delivering projects on time and within budget through rigorous attention to detail and the application of Amentum’s project controls processes and best‑practice techniques.

Core Project Controls:

Applying project controls processes and systems

Project set‑up, close‑out and reconciliations

Ensuring accurate cost allocation

Cost forecasting and financial analysis

Monitoring revenue and gross margin

Ensuring corporate systems accurately reflect project status

Monitoring aged debt and supporting recovery

Preparing client‑specific monthly reports

Producing internal reporting for Operational Project Reviews

Contributing to and/or attending monthly project meetings

Supporting bids and proposals

Supporting Project/Programme Managers with:

Earned value analysis

Risk and opportunity management

Programme and resource monitoring

Preparing change control and early warning notices

Maintaining quality documentation

Monitoring key performance indicators

Here’s What You’ll Need

A positive, proactive can‑do attitude, with the confidence to take ownership and solve problems

High confidence using Excel — including formulas, lookups, pivot tables, data validation and the ability to analyse data and present it clearly

Excellent communication skills, with the ability to engage effectively with project teams and clients

Be organised, reliable and comfortable managing multiple priorities

Experience in a similar project controls, cost engineering or financial role

Strong mathematical background and high numerical accuracy

Ability to work independently and collaboratively in a fast‑paced environment

Good working knowledge of Microsoft Excel

Experience with project controls tools and software

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.