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 Opportunity
Nuclear Power Programmes has been formed with the vision to support positive change and help shape the future of Nuclear Power. Operational throughout the UK and across continental Europe, we are seeking to expand our team on a variety of nuclear projects, which range in technologies and that find themselves at different stages of their development. To do this, we are seeking to continuously employ talented individuals to join our diverse team that are excited about nuclear projects and are committed to Net Zero, and Energy Security. In both client facing and internal roles we are delivering major programme and project management capabilities throughout the project lifecycle. We are driving to deliver safe, high quality and to time solutions by thinking innovatively and working collaboratively.
Role Overview
We’re looking for a Baseline & Change Manager to play a pivotal role within the SZC Project Controls function, acting as a centre of excellence for performance management and delivery assurance.In this role, you’ll support and advise on change control and baseline management processes, ensuring that all project changes are effectively governed, assessed, and implemented. Working within the wider Programme Management Office (PMO), you’ll help drive forward-looking solutions that enable the project to be delivered safely, on time, and within budget. You’ll also contribute to the successful operation of the Investment Change Committee (ICC), ensuring high-quality decision-making across the programme.
Key Responsibilities
Support the implementation and continuous improvement of the change management process
Coordinate change activities across the Delivery Programme
Act as a central point of contact for change-related queries and governance
Support the development and management of baseline strategy, plans, and procedures
Coordinate inputs across cost, schedule, and risk to ensure aligned baseline updates
Support monthly Baseline & Change reporting
Ensure consistency, quality, and integrity of change data
Maintain weekly/monthly reporting routines aligned to governance cycles
Advise Project Managers, Change Owners, and Supply Chain on change control processes
Work closely with Project Controls teams to ensure effective change identification and assessment
Facilitate change requests with engineering and delivery teams
Support preparation and facilitation of twice-monthly Investment Change Committee (ICC) meetings
Ensure change submissions are decision-ready and meet governance standards
Review and challenge change proposals
Ensure robust impact assessments across cost, schedule, and risk
Provide training and guidance on change processes and tools
Promote best practice and consistent application across the programme
Here's What You'll Need
Degree (or equivalent experience) in a relevant discipline
Experience in Project Controls, PMO, Commercial or Programme Management
Strong understanding of: Change control and governance frameworks, baseline management principles & WBS / CBS structures
Excellent stakeholder engagement and facilitation skills
Ability to operate effectively in a large, complex programme environment
Strong communication, organisation, and problem-solving capabilities
Desirable Experience
Experience on large infrastructure or regulated programmes
Knowledge of: Contract frameworks (e.g. NEC, early warning processes)& Project controls tools and reporting systems (e.g. Power BI)
Professional accreditation (APM, PMI, RICS, etc.)
Experience facilitating programme-level governance forums
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 [email protected]
