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 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.

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 Role

Amentum is seeking an experienced Senior Project Manager to lead the delivery of complex water and wastewater infrastructure projects across the full project lifecycle, from design and procurement through construction, commissioning and handover while managing risk, commercial performance and client satisfaction.

Key Responsibilities

• Lead multidisciplinary project teams to deliver projects safely, on time, within budget and to quality standards.
• Manage programme, cost, risk, change control, commercial performance and stakeholder engagement.
• Coordinate engineering, procurement, construction and commissioning activities.
• Build strong client, contractor and supply chain relationships.
• Ensure compliance with health, safety, environmental, quality and governance requirements.
• Provide project performance reporting and resolve complex delivery issues.
• Support business development, tendering activities and mentor junior project managers.

Essential Requirements

• Significant, demonstrable experience managing projects within the UK water industry (essential).
• Strong track record delivering complex water and wastewater infrastructure projects.
• Experience across design, procurement, construction, commissioning and handover phases.
• Proven leadership of multidisciplinary teams and multiple stakeholders.
• Strong commercial, financial, risk and programme management expertise.
• Excellent client-facing, communication and stakeholder management skills.
• Thorough understanding of health, safety, environmental and quality requirements within infrastructure delivery.

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 in everything we do. We know that if we are inclusive, we’re more connected, and 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.

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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