Senior EC&I Engineer

time left to apply End Date: October 31, 2025 (30+ days left to apply)

job requisition id R

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 diversity, and 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. If you're ready to join a team that values your unique perspective and is committed to your safety, well-being, and professional growth.

The Opportunity
Amentum is the Design and Engineering partner for Sellafield under the PPP (Programme and Project Partners). This is a 20-year arrangement to deliver £7bn of major projects. We are looking to recruit high value expertise from across regulated and comparable sectors to work in a collaborative environment. PPP is delivering major projects, site wide improvements and provision of supporting services.

The Project
The Sellafield Product & Residue Store (SPRS) Retreatment Plant (SRP) Project will provide a facility that receives Special Nuclear Material (SNM) from existing stores across the Sellafield site and processes it into a form suitable for safe and secure storage until 2120.

The Role
To support the delivery of the SRP Project, we are seeking a Senior EC&I Engineer to join the design team. Responsibilities of this position are to lead the delivery of mechanical handling systems, specifically package transfer systems and storage outside of Glovebox Lines, along with building services systems including cranes, FLTs and lifts.
The SRP Project is currently in the Construction phase which incorporates procurement, manufacture, works test, installation, and commissioning. This role is required to provide both design support activities to the supply chain, along with completion of outstanding design scope from earlier project phases.

As a Senior EC& I Engineer you will be expected to:

• Provide design support to procurement, manufacture, and installation teams.
• Management of CE&I design configuration baseline in response to developing project requirements and design information from the supply chain.
• Checking and reviewing CE&I design deliverables to programme deadlines and to appropriate relevant standards, codes, and regulations.
• Working with the supply chain, supporting design aspects of contracts in ensuring suppliers meet client Engineering Standards, responding to Technical Queries, supporting production of test specification and attendance at Works Acceptance Testing at supplier facilities.
• To integrate and coordinate the above CE&I systems into the wider SRP Plant, via Building Interface Modelling (BIM), working with the other engineering and non-technical disciplines.
• Support the project Commissioning team activities.
• Responsibility for ensuring that throughout remaining phases of the project lifecycle, the CE&I design intent is aligned to safety case requirements (nuclear and conventional) and ensuring all functional requirements are met, ensuring Validation and Verification is adequately managed.

As a Senior EC&I Engineer you will already have:

• Is SQEP to undertake the design of CE&I aspects of mechanical handling systems, possessing experience of delivering similar systems in either nuclear (preferred) or non-nuclear applications.
• Excellent communication skills and is able to interface with all levels of the engineering organisation.
• BEng/MEng degree or HND/HNC in a relevant field, or demonstrable equivalent experience.
• Professionally registered or be working towards professional registration with a recognised engineering institution (e.g. IET, InstMC).
• Demonstrable experience in a similar role, previous nuclear experience is highly desirable though not essential providing that suitable experience can be demonstrated. At interview, shall be able to demonstrate the following competencies:
• Evidence of their design competence of mechanical handling systems throughout the full project lifecycle.
• Independently capable of managing their area of responsibility.
• Ensuring Validation & Verification is completed throughout project 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 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.

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For more than 100 years, Amentum has tackled the world's toughest challenges to deliver agile and steadfast solutions to the U.S. government and its allies. With more than 50,000 employees on all seven continents and in more than 60 countries, Amentum delivers a broad range of operational support services to meet the critical needs of our clients. Our headquarters are in Chantilly, VA. Find us online at

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