Project Support

Project Support

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.

Amentum is a key delivery partner within the Decommissioning and Nuclear Waste Partners (DNWP) Framework, a major Sellafield programme worth up to £4.6 billion and running for up to 15 years. The framework is focused on safely accelerating decommissioning, remediation and high-hazard risk reduction across one of the most complex nuclear sites in the world.

Our nuclear team supports the front-end design, engineering, technical leadership and delivery expertise required across the DNWP portfolio. We are looking for individuals with high-value expertise from across regulated and comparable sectors to who can work collaboratively, embrace new challenges and contribute to the mission of safely and efficiently delivering Sellafield's decommissioning and nuclear waste objectives.

About the Opportunity

The Project Support role provides comprehensive administrative and operational support to the project office. The post holder acts as a central point of contact, ensuring effective communication, coordination, and compliance with company policies, while supporting project delivery through efficient office and systems management.

Key Responsibilities:

Office & Front-of-House Support

• Manage and direct incoming calls to the appropriate personnel, ensuring accurate message recording.
• Welcome visitors and guide staff or external personnel around the office as required.
• Coordinate door access control for staff and visitors, ensuring security procedures are followed.
• Liaise with couriers and dispatch teams, managing incoming and outgoing post efficiently.

Administration & Office Operations

• Manage day-to-day office operations including filing systems, notice boards, and schedules.
• Ensure adequate office stationery supplies; monitor stock levels and reorder as required.
• Coordinate office activities and communicate key information across the team.
• Arrange meetings, attend as required, and prepare, record, and circulate accurate meeting minutes.

Project & Departmental Support

• Liaise closely with Mechanical and Electrical departments to support administrative requirements.
• Support project administration across the framework, ensuring timely and accurate information flow.
• Ensure concerns or complaints are escalated to the appropriate discipline manager.

Payroll & Training Coordination

• Collate and submit all relevant employee information to the Payroll Department for framework staff.
• Distribute training requirements and maintain records to ensure all employees attend mandatory training courses.
• Carry out checks to confirm compliance with training and competence requirements.

Systems & Process Administration

• Manage the uploading of Purchase Orders (POs) and Task Numbers within the Kissflow system.
• Act as the main point of contact for Kissflow queries, liaising directly with the team to resolve issues.
• Maintain accurate electronic and manual records in line with company procedures.

Health, Safety & Compliance

• Work closely with the management team to maintain a safe and secure office environment.
• Deal appropriately with health, safety, and security issues as they arise.
• Ensure familiarity and compliance with framework Health, Safety, and Environmental policies.
• Adhere to company policies, procedures, and instructions at all times.

Essential Skills & Experience

• Experience working in a highly regulated environment, with an understanding of the importance of governance, compliance, and procedural adherence
• NVQ Level (or equivalent) in Business Administration or 3 years' experience in Administration
• Strong communication, interpersonal and influencing skills to provide an agile and flexible service.
• Organised with excellent timekeeping skills.
• Ability to work across organisations and to multi-task and work under own initiative.
• Able to work under short term pressure to resolve emerging issues in a timely and responsive manner.
• Advanced proficiency in using all Microsoft office applications.
• Ability to react to an ever changing, fast-paced environment.
• Ability to obtain appropriate security clearance and site pass.

Desirable Skills & Experience

• Previous experience in general project admin role.
• Awareness of SL systems and procedures.
• Experience handling sensitive and controlled information.

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.

Compensation Details:

GBP

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax-saving options
• Disability and life insurance
• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

05/21/2026 - Until Filled

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical