Senior Criticality Safety Engineer

AtkinsRéalis; Manchester; On-site; GBP 50,000 - 75,000; Full time

Job summary

AtkinsRéalis is looking for a Senior Criticality Safety Engineer to join their Nuclear & Power Division in Manchester. The role involves leading teams in project delivery across various stages in the nuclear sector, supporting safety processes and criticality assessments, and promoting safety culture in a collaborative environment.

Benefits

Flexible working arrangements

Health & wellbeing benefits

Career planning assistance

Qualifications

• Experience in criticality assessments and hazard analysis.
• Qualifications in industry-recognized codes (MCNP, MONK, SCALE).
• Experience in multi-disciplined project teams.

Responsibilities

• Direct multidisciplinary teams for complex nuclear projects.
• Enhance radiation protection processes and assist in documentation.
• Support client projects within the Nuclear and Power business.

Skills

Understanding of radiation transport codes

Teamwork and Leadership qualities

Criticality safety knowledge

Education

Degree in physics, chemistry, mechanical, chemical or process engineering

Job description

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Senior Criticality Safety Engineer, Manchester

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Client:

Location:

Manchester, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

cf4223ccf1fc

Job Views:

6

Posted:

25.06.2025

Expiry Date:

09.08.2025

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Job Description:

Job Description

Take the lead in global nuclear safety.

"You might know us for the great work we do across our wide variety of projects. We're proud to say it's thanks to our people's diversity of thought, expertise and knowledge. And when you join us, you'll be a part of this genuinely collaborative environment, where everyone's voice is valued and treated equally.

We're passionate about what we do, but we don't take ourselves too seriously. Simply put, this a great place to be. So, when it comes to your life outside of work, ask us about our flexible and remote working policies designed to help you get the most out of life."

Read more about how you can thrive with us.

Join us as a Senior Criticality Safety Engineer in our Nuclear & Power Division, and play a vital role designing complex new schemes to protect our clients' assets. There's no such thing as a one-size-fits-all career plan in AtkinsRealis. And with a huge variety of projects to work on, you'll have plenty of opportunities to grow and challenge yourself as a consultant.

Your purpose:

Working within the Nuclear and Power business, you will be supporting delivery on a number of client projects, either on behalf of AtkinsRealis or even based within the client’s organisation. The role will be versatile and encompass all stages of project delivery, from initial set up, to delivery of the finished project and our clients span the New Build, Generation, Defence, Decommissioning and Disposal areas of the industry.

Within the Nuclear and Power business our clients work in highly regulated nuclear environments and you will be directing your multi-disciplinary teams to deliver complex and unique projects.

Main aspects of the role will include enhancing radiation protection and safety processes and procedures, assisting in the production of bids and proposals, and implementing and contributing to our safety culture, an environment we value so greatly.

What you can bring?

• Science or engineering expertise (physics, chemistry, mechanical, chemical or process engineering, Degree qualified or equivalent).
• Understanding and experience of utilising industry recognised radiation transport codes such as; MCNP, MONK, SCALE, for k-effective calculations.
• Successful delivery of criticality assessments including development of key associated documentation such as Hazard Analysis (HAZANS), Criticality Advice Notes (CANs) and Criticality Clearance Certificates (CCCs).
• Experience working as a criticality safety engineer within multi-disciplined project teams.
• Teamwork and Leadership qualities.
• An appreciation of what’s required for design, when working in safety critical industries, like Nuclear.
• An appreciation of project and client management.
• An understanding of the fundamental factors which contribute to business success.

Why work for AtkinsRéalis?

The UK is the first major economy to legislate for a Net Zero target by 2050. To achieve this, our nuclear and clean energy teams are ensuring a mix of secure and sustainable energies that can meet our industry and lifestyle demands today, and in 30 years' time. We help to power our world through exciting new technologies and intelligent cybersecurity systems on projects that vary greatly in size, scope, and scale. So, you'll be creating the right safe and resilient systems across nuclear power, renewables, decarbonisation development, new builds and energy efficiency.

Read more about our Vision for Women.

Meeting your needs:

When you start with us, you'll enjoy “Total Reward,” a package that can be tailored to your lifestyle, career and personal needs. From flexible holidays to life assurance, health & wellbeing benefits, and career planning for the senior stage of your career. Making sure you're supported is important to us. So, if you identify as having a disability, tell us ahead of your interview. And let's talk about any adjustments you might need.

New name, new era. We are AtkinsRéalis. It will take some time for all our information to update – you can still refer to our fantastic benefits via the link below:

YourReward at SNC-Lavalin (snclavalin.com).

More about us:

AtkinsRéalis is a leading global consultancy with over 100 years of design and engineering expertise. With us, you'll be surrounded by the skills, knowledge and support to help you succeed. Together, we can deliver projects which have a positive, sustainable impact on the world.

Additional Information:

This role may require security clearance and offers of employment will be dependent on obtaining the relevant level of clearance. If this is necessary, it will be discussed with you at interview. The vetting process is delivered by United Kingdom Security Vetting (UKSV) and may require candidates to provide proof of residency in the UK of 5 years or longer. If applying to this role please do not make reference to (in conversation) or include in your application or CV, details of any current or previously held security clearance.

We are committed to promoting a diverse and inclusive community - a place where we can all be ourselves, thrive and develop. To help embed inclusion for all, from day one, we offer a range of family friendly, inclusive employment policies, flexible working arrangements and employee networks to support staff from different backgrounds. As an Equal Opportunities Employer, we value applications from all backgrounds, cultures and ability.

#LI-Energy #risksafetynp

Worker Type

Employee

Job Description

Take the lead in global nuclear safety.

"You might know us for the great work we do across our wide variety of projects. We're proud to say it's thanks to our people's diversity of thought, expertise and knowledge. And when you join us, you'll be a part of this genuinely collaborative environment, where everyone's voice is valued and treated equally.

We're passionate about what we do, but we don't take ourselves too seriously. Simply put, this a great place to be. So, when it comes to your life outside of work, ask us about our flexible and remote working policies designed to help you get the most out of life."

Read more about how you can thrive with us.

Join us as a Senior Criticality Safety Engineer in our Nuclear & Power Division, and play a vital role designing complex new schemes to protect our clients' assets. There's no such thing as a one-size-fits-all career plan in AtkinsRealis. And with a huge variety of projects to work on, you'll have plenty of opportunities to grow and challenge yourself as a consultant.

Your purpose:

Working within the Nuclear and Power business, you will be supporting delivery on a number of client projects, either on behalf of AtkinsRealis or even based within the client’s organisation. The role will be versatile and encompass all stages of project delivery, from initial set up, to delivery of the finished project and our clients span the New Build, Generation, Defence, Decommissioning and Disposal areas of the industry.

Within the Nuclear and Power business our clients work in highly regulated nuclear environments and you will be directing your multi-disciplinary teams to deliver complex and unique projects.

Main aspects of the role will include enhancing radiation protection and safety processes and procedures, assisting in the production of bids and proposals, and implementing and contributing to our safety culture, an environment we value so greatly.

What you can bring?

Science or engineering expertise (physics, chemistry, mechanical, chemical or process engineering, Degree qualified or equivalent).

Understanding and experience of utilising industry recognised radiation transport codes such as; MCNP, MONK, SCALE, for k-effective calculations.

Successful delivery of criticality assessments including development of key associated documentation such as Hazard Analysis (HAZANS), Criticality Advice Notes (CANs) and Criticality Clearance Certificates (CCCs).

Experience working as a criticality safety engineer within multi-disciplined project teams.

Teamwork and Leadership qualities.

An appreciation of what’s required for design, when working in safety critical industries, like Nuclear.

An appreciation of project and client management.

An understanding of the fundamental factors which contribute to business success.

Why work for AtkinsRéalis?

The UK is the first major economy to legislate for a Net Zero target by 2050. To achieve this, our nuclear and clean energy teams are ensuring a mix of secure and sustainable energies that can meet our industry and lifestyle demands today, and in 30 years' time. We help to power our world through exciting new technologies and intelligent cybersecurity systems on projects that vary greatly in size, scope, and scale. So, you'll be creating the right safe and resilient systems across nuclear power, renewables, decarbonisation development, new builds and energy efficiency.

Read more about our Vision for Women.

Meeting your needs:

When you start with us, you'll enjoy “Total Reward,” a package that can be tailored to your lifestyle, career and personal needs. From flexible holidays to life assurance, health & wellbeing benefits, and career planning for the senior stage of your career. Making sure you're supported is important to us. So, if you identify as having a disability, tell us ahead of your interview. And let's talk about any adjustments you might need.

New name, new era. We are AtkinsRéalis. It will take some time for all our information to update – you can still refer to our fantastic benefits via the link below:

YourReward at SNC-Lavalin (snclavalin.com).

More about us:

AtkinsRéalis is a leading global consultancy with over 100 years of design and engineering expertise. With us, you'll be surrounded by the skills, knowledge and support to help you succeed. Together, we can deliver projects which have a positive, sustainable impact on the world.

AtkinsRéalis | Latest Projects Articles (atkinsrealis.com)

Additional Information:

This role may require security clearance and offers of employment will be dependent on obtaining the relevant level of clearance. If this is necessary, it will be discussed with you at interview. The vetting process is delivered by United Kingdom Security Vetting (UKSV) and may require candidates to provide proof of residency in the UK of 5 years or longer. If applying to this role please do not make reference to (in conversation) or include in your application or CV, details of any current or previously held security clearance.

We are committed to promoting a diverse and inclusive community - a place where we can all be ourselves, thrive and develop. To help embed inclusion for all, from day one, we offer a range of family friendly, inclusive employment policies, flexible working arrangements and employee networks to support staff from different backgrounds. As an Equal Opportunities Employer, we value applications from all backgrounds, cultures and ability.

#LI-Energy #risksafetynp

Worker Type

Employee

Job Type

Regular

At AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences.

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Created on 25/06/2025 by TN United Kingdom