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 Lot 1 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 Dose Controller plays a key role in ensuring that radiological exposures for personnel working in nuclear facilities are closely monitored, accurately recorded, and kept as low as reasonably practicable (ALARP). The role provides real‑time dose oversight, supports planning for radiological work, and ensures compliance with UK radiation protection legislation and site-specific arrangements.

Key Responsibilities:

• Monitor and record personnel dose uptake in real time during work in controlled areas.

• On site control of dose badges and monitoring collection dates, issues etc.

• Track cumulative dose exposure and ensure individuals remain within statutory and site limits.

• Maintain accurate dose logs and documentation in line with regulatory requirements.

• Escalate issues where dose trends approach thresholds or unexpected readings occur.

• Support job planning by providing radiological dose rate information and forecasts.

• Contribute to the development of safe systems of work and radiological job packs.

• Assist in estimating predicted dose for work tasks and ensuring ALARP principles are embedded.

• Advise on radiological hazards and required control measures before work begins.

• Liaise with Health Physics Monitors, RPS, operational teams, and supervision to coordinate safe radiological working practices.

• Communicate dose status clearly to workers during tasks, ensuring awareness of exposure.

• Support debriefs and lessons learned relating to radiological performance and unexpected exposures.

• Ensure all dose control activities meet the requirements of:

  • Ionising Radiations Regulations (IRR17)

  • Nuclear site licence conditions

  • Local rules and radiological safety procedures

• Participate in audits, inspections, and investigations relating to dose control.

• Maintain auditable and secure dose‑related records.

• Issue and recover personal dosimetry equipment such as electronic dose meters (EDMs) and TLDs.

• Ensure dosimetry systems are functional and calibrated; report faults immediately.

• Assist Health Physics teams in routine radiological surveillance as needed.

Essential Skills & Experience:

• Minimum 2 years of experience working in highly regulated environment with minimum of 1 years’ experience within the radiological areas (Separation).

• Level 2 Nuclear Health Physics Monitor Apprenticeship or Level 2 Certificate in Health Physics Monitoring in the Nuclear Industry.

• Proficient in MS Office tools.

• Understanding of radiological protection principles (IRR17, ALARP, dose limits).

• Strong attention to detail and accuracy in record keeping.

• Ability to stay calm, focused, and assertive in high-pressure or hazardous environments.

• Clear communication skills and confidence in challenging unsafe behaviours.

• Proactive in highlighting risks and proposing improvements.

• Team‑focused, collaborative, and professional.

• Holds Sellafield clearance level and P4 pass.

Physical Requirements

• Ability to work in controlled areas while wearing required PPE and RPE.

• Fit to work under radiological conditions as determined by occupational health.

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 [email protected]