Principal or Senior Nuclear Radiation Consultant- Shielding & Criticality

Amentum; Warrington; Hybrid; GBP 60,000 - 95,000; Full time

Job summary

Amentum is seeking a Principal or Senior Nuclear Radiation Consultant in Warrington to provide technical leadership in radiation physics for international nuclear projects. The role involves overseeing shielding design, criticality safety, and supporting a variety of consultancy projects across the nuclear industry, along with a competitive benefits package including family-friendly policies and professional development opportunities.

Benefits

Free single medical cover

Enhanced parental leave pay

Reimbursement for professional development

Paid volunteering time

Charitable donations program

Qualifications

• Degree in a relevant numerate scientific or engineering discipline required.
• Extensive experience and established reputation in the nuclear industry.
• Ability to produce high-quality, technical documents.

Responsibilities

• Overseeing radiation transport and inventory calculations.
• Providing consultancy and leadership on complex project challenges.
• Establishing client relationships and developing new opportunities.

Skills

Radiation Physics

Radiation Protection

Criticality Safety

Technical Leadership

Client Relationship Management

Education

Degree in relevant scientific or engineering discipline

Higher degree (Masters / PhD)

Tools

Advanced computer-based models

Programming

Job description

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Principal or Senior Nuclear Radiation Consultant- Shielding & Criticality, Warrington

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Client:

Amentum

Location:

Warrington, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

fa31160ed69b

Job Views:

6

Posted:

22.06.2025

Expiry Date:

06.08.2025

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Job Description:

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. We also give back to our communities through our Collectively program which incorporates matched-funding, paid volunteering time and charitable donations.

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

We are recruiting for a Principal or Senior Radiation Consultant to join our Advanced Reactors business. As the demand for our expertise continues to grow, an opportunity has arisen to work in the area of radiation physics, based in our Birchwood office to provide technical leadership as a principal or senior consultant in a number of UK and international nuclear projects.

The role will include, but not be limited to overseeing radiation transport and inventory calculations, shielding design, criticality safety, reactor physics and radiation protection. You will be responsible for providing consultancy and leadership on cutting-edge issues and be able to represent, interact with, and lead international experts on current project challenges, where needed.

You will be a key part of our team, supporting and leading a wide range of consultancy projects, small and large, for a variety of customers across the nuclear industry, including new build projects, SMR and AMRs, existing civil and defence plant, fusion reactor design and decommissioning.

Key Responsibilities include:

• Advising on and developing advanced computer-based models, including radiation models
• Overseeing as well as performing complex calculations, including for shielding and criticality and other applications
• Assessment of handling, movement, and transportation of radioactive materials
• Providing technical leadership and guidance in the assessment of complex problems and developing associated solutions
• Production of high-quality, complex, technical documents
• Establishing and maintaining client relationships, developing new opportunities for yourself and the team
• Degree in any relevant numerate scientific or engineering discipline
• Extensive experience with an established reputation in the nuclear industry, including radiation physics and radiation transport modelling, with experience of shielding and/or criticality applications.
• The ability to write well-structured reports that present clear argument with a sound basis for recommendations.
• Track record in building strong relationships with clients and colleagues.
• Higher degree in relevant discipline (Masters / PhD)
• Established, internationally recognised, expertise in relevant technical fields.
• Experience in programming, digital design/analysis and simulation.

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. We also give back to our communities through our Collectively program which incorporates matched-funding, paid volunteering time and charitable donations.

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

We are recruiting for a Principal or Senior Radiation Consultant to join our Advanced Reactors business. As the demand for our expertise continues to grow, an opportunity has arisen to work in the area of radiation physics, based in our Birchwood office to provide technical leadership as a principal or senior consultant in a number of UK and international nuclear projects.

The role will include, but not be limited to overseeing radiation transport and inventory calculations, shielding design, criticality safety, reactor physics and radiation protection. You will be responsible for providing consultancy and leadership on cutting-edge issues and be able to represent, interact with, and lead international experts on current project challenges, where needed.

You will be a key part of our team, supporting and leading a wide range of consultancy projects, small and large, for a variety of customers across the nuclear industry, including new build projects, SMR and AMRs, existing civil and defence plant, fusion reactor design and decommissioning.

Key Responsibilities include:

Advising on and developing advanced computer-based models, including radiation models

Overseeing as well as performing complex calculations, including for shielding and criticality and other applications

Assessment of handling, movement, and transportation of radioactive materials

Providing technical leadership and guidance in the assessment of complex problems and developing associated solutions

Production of high-quality, complex, technical documents

Establishing and maintaining client relationships, developing new opportunities for yourself and the team

Essential

Degree in any relevant numerate scientific or engineering discipline

Extensive experience with an established reputation in the nuclear industry, including radiation physics and radiation transport modelling, with experience of shielding and/or criticality applications.

The ability to write well-structured reports that present clear argument with a sound basis for recommendations.

Track record in building strong relationships with clients and colleagues.

Desirable

Higher degree in relevant discipline (Masters / PhD)

Established, internationally recognised, expertise in relevant technical fields.

Experience in programming, digital design/analysis and simulation.

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 and diversity in everything we do. We know that if we are inclusive, we're more connected, and if we are diverse, 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 centered on inclusion and diversity.

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 the team.