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Salary
≈ $52k – $116k per year (Estimated)
Location
In office (Antwerp)
Seniority
Senior · 12+ years exp
Employment
Part-Time

Confirmed on the employer's own hiring board on Oct 29, 2026. First seen by Alion on Oct 21, 2026. Amentum scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Amentum is a US government and critical infrastructure services contractor headquartered in Chantilly, Virginia, providing engineering, technical, mission support and operations services in defense, intelligence, space, energy and environment markets. It has about 50,000 employees in more than 70 countries, is listed on the New York Stock Exchange, and absorbed PAE in 2022 before combining with the Jacobs critical mission solutions business in 2024. Openings include aerospace, GN&C and reliability engineers, aircraft workers, database administrators, software engineers, biometric enrollment specialists and paralegals.

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.

About the opportunity

Amentum is leading a joint venture (JV) delivering a Framework Contract for the European Commission’s Joint Research Centre (JRC), providing intellectual support services to the nuclear decommissioning programme across multiple European sites.

The JV supports JRC in accelerating decommissioning and waste management activities through provision of technical and programme support services, including:

Project and programme management

Licensing Radioactive waste management

Radiation protection

Decommissioning and nuclear engineering

Worksite management and safety

Non-nuclear engineering

  • Facility supervision and quality assurance.

We are looking for a Senior Decommissioning Project Manager to work in Geel, Belgium. This is a part time opportunity (0.5)

The Senior Decommissioning Project Management Assistant is an on-site project management and technical support role providing assistance to JRC decommissioning project managers at the JRC Geel site, as part of the Joint Research Centre (JRC) Decommissioning & Waste Management (D&WM) Programme under the CELER framework contract.

The role supports the planning, execution and monitoring of decommissioning projects to help ensure delivery to schedule and budget. It combines day-to-day coordination, communication, documentation and logistical management with technical support for decommissioning activities, serving as a link between project managers, team members, stakeholders, contractors and on-site technical staff.

The assignment is a 0.5 FTE Senior on-site resource.

Key Responsibilities

Decommissioning project delivery and technical support

  • Manage a defined subset of a decommissioning project, such as a particular phase or deliverable, under the direction of the JRC project manager.
  • Identify strategies for execution of pre-decommissioning and decommissioning activities and harmonise them with existing JRC D&WM methodologies.
  • Contribute to project-management and technical tasks concerning decommissioning of nuclear laboratories in Buildings 010 and 090 at JRC Geel.
  • Coordinate with on-site technical staff to support compliance with project safety and quality standards.
  • Provide field and operational support to decommissioning activities as required.

Project planning, controls and coordination

  • Assist with project planning and the coordination of project activities.
  • Monitor project performance, update and report schedule progress, and track budgets.
  • Identify resource requirements, gaps, potential risks and delays to support proactive mitigation.
  • Set up and facilitate meetings, site visits and project workshops, including preparation of agendas and coordination of team activities.
  • Monitor utilisation of personnel, equipment and materials to support efficient project delivery.

Technical, quality and project documentation

  • Prepare and review technical and QA/QC documentation relevant to decommissioning activities.
  • Organise documents, update databases and maintain comprehensive project files.
  • Draft meeting minutes, status reports and presentation materials for management or steering committees.
  • Manage information within the JRC archival ecosystem to support data integrity, accessibility, high-fidelity indexing, long-term trend analysis and compliance with nuclear-industry records-management standards.
  • Collect, organise, process, analyse and interpret project and technical data and information.

Stakeholder, contractor and operational coordination

  • Act as a point of contact for project managers, stakeholders, contractors and team members within the assigned scope.
  • Support procurement activities, including review of supplier contracts and management of deliveries.
  • Communicate project requirements, progress, risks and actions effectively across multidisciplinary teams.
  • Undertake other routine, standardised or low-risk project management duties appropriate to the role.

Requirements

  • Effective verbal and written communication skills for multidisciplinary team collaboration.
  • Good understanding of project management principles and their application to technical project delivery.
  • Broad knowledge and experience of nuclear decommissioning methods, practices, technologies and equipment.
  • Good working knowledge of legislation, policy, regulatory guidance and standards relating to decommissioning and radioactive waste management.
  • Understanding of the challenges associated with handling nuclear materials and radioactive waste.
  • Proficiency in project management software and Microsoft Office Suite.
  • Ability to identify risks, troubleshoot issues and adapt to changing project conditions.
  • Strong attention to detail, problem-solving skills and sound decision-making ability.
  • Ability to prepare and review clear technical, QA/QC and project-management documentation.
  • Experience & Qualifications
  • More than 12 years of relevant professional experience consistent with a Senior profile, including substantial experience in nuclear decommissioning and/or technically complex nuclear projects.
  • Practical experience delivering or supporting decommissioning projects, including project planning, coordination, progress monitoring, technical support and field activities.
  • Appropriate training and qualifications to perform the required project-management and decommissioning support tasks in a nuclear environment.
  • Ability to work on site at JRC Geel and, where required by the role, within controlled or supervised areas as an exposed worker.

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.

Compensation Details:

EUR
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