Mechanical Engineer - Nuclear

AtkinsRéalis; Sheffield; On-site; GBP 35,000 - 55,000; Full time

Job summary

A leading global consultancy is seeking a Mechanical Engineer specializing in Nuclear projects in Sheffield. The role involves innovative problem-solving for significant energy-related challenges, providing a chance to work with diverse teams and contribute to the UK's energy security. Candidates should be degree-qualified and experienced in mechanical engineering, able to engage effectively with clients and deliver high-quality engineering solutions.

Benefits

Flexible holidays

Life assurance

Health & wellbeing benefits

Qualifications

• Experience in mechanical engineering substantiation for new designs or existing plant.
• Experience in writing detailed technical reports.
• Comfortable engaging with clients and understanding their processes.

Responsibilities

• Designing test rigs for nuclear projects.
• Conducting structural integrity assessments.
• Providing engineering solutions for energy projects.

Skills

Analytical skills

Problem-solving

Team collaboration

Client engagement

Education

Degree qualified mechanical engineer

Tools

ABAQUS

PYTHON

Job description

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Mechanical Engineer - Nuclear, Sheffield

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Client:

Location:

Sheffield, United Kingdom

Job Category:

Other

-

EU work permit required:

Yes

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Job Reference:

a11fff5d2503

Job Views:

63

Posted:

22.06.2025

Expiry Date:

06.08.2025

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Job Description:

Job Description

Are you a Mechanical Engineer, with a background in either mechanical analysis or design, who thrives on difficult problems? Are you drawn to complex projects and excited by the opportunity to rapidly move on to leadership positions, heading up projects and guiding junior engineers?

If so, you might enjoy solving the energy industry’s most important conundrums across a variety of clients. You could be designing test rigs in support of the development of the UKs nuclear fusion capabilities, carrying out structural integrity assessment of primary plant to keep existing fleet generating, supporting the UK Submarine and SMR programmes, or enabling one of many renewable energy projects across a growing carbon net zero portfolio. You’re likely to be juggling several projects simultaneously, so enjoying being adaptable is a must! The constant in this role is the complex nature of the jobs and the chance to provide innovative solutions to a range of problems for several appreciative clients.

Whichever energy-related projects you get involved in, you’ll be engaged in the development of engineering solutions to the industry’s most challenging problems, so you’ll be making an important and rewarding contribution to the energy and environmental security of the UK and beyond.

If you are a self-starter who can deliver multiple projects at the same time, working closely with clients and internal teams to capture requirements, set up projects and deliver right-first-time solutions for the most challenging problems in the energy industry, then we’d love you to apply.

Read more about how you can thrive with us.

Role requirements:

You will work within small to medium sized teams. To benefit from the collective experience of the team and our clients, and drive innovative thinking, you’ll work in a collaborative and supportive office/site environment for a minimum of half of your working week. You will bring a level of commercial awareness to working within those teams to effectively deliver tasks for multiple workstreams and to deliver to time, quality, and cost.

• Degree qualified mechanical engineer (or other relevant qualification).
• Experience in carrying out mechanical engineering substantiation for new designs or existing plant.
• Experience in writing accurate, detailed, and concise technical reports (e.g., design substantiations, basis of analysis, safety case references).
• Experience in delivery accountability for mechanical engineering solutions.
• Comfortable with engaging with existing and prospective clients, working at their sites, and investing time in understanding their issues, goals, and processes.

Please flag if you have experience in any of the following (but still apply if you might enjoy gaining that experience too) -

• Experience in Finite Element Analysis, for example using ABAQUS.
• Experience in piping and pressure vessel design and stress analysis.
• Working, or authoring bids, within a safety critical and heavily regulated environment.
• Experience in working with design codes such as ASME BPVC Section III, RCC-M, ASME B31.1, BS EN 13480 and BS EN13445.
• Experience in tool/assessment automation, for example using PYTHON.
• Or if you are chartered with a relevant professional institute (or approaching application for registration).

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 #RoadJobs #MechNPJobs

Worker Type

Employee

Job Description

Are you a Mechanical Engineer, with a background in either mechanical analysis or design, who thrives on difficult problems? Are you drawn to complex projects and excited by the opportunity to rapidly move on to leadership positions, heading up projects and guiding junior engineers?

If so, you might enjoy solving the energy industry’s most important conundrums across a variety of clients. You could be designing test rigs in support of the development of the UKs nuclear fusion capabilities, carrying out structural integrity assessment of primary plant to keep existing fleet generating, supporting the UK Submarine and SMR programmes, or enabling one of many renewable energy projects across a growing carbon net zero portfolio. You’re likely to be juggling several projects simultaneously, so enjoying being adaptable is a must! The constant in this role is the complex nature of the jobs and the chance to provide innovative solutions to a range of problems for several appreciative clients.

Whichever energy-related projects you get involved in, you’ll be engaged in the development of engineering solutions to the industry’s most challenging problems, so you’ll be making an important and rewarding contribution to the energy and environmental security of the UK and beyond.

If you are a self-starter who can deliver multiple projects at the same time, working closely with clients and internal teams to capture requirements, set up projects and deliver right-first-time solutions for the most challenging problems in the energy industry, then we’d love you to apply.

Read more about how you can thrive with us.

Role requirements:

You will work within small to medium sized teams. To benefit from the collective experience of the team and our clients, and drive innovative thinking, you’ll work in a collaborative and supportive office/site environment for a minimum of half of your working week. You will bring a level of commercial awareness to working within those teams to effectively deliver tasks for multiple workstreams and to deliver to time, quality, and cost.

Essential criteria:

Degree qualified mechanical engineer (or other relevant qualification).

Experience in carrying out mechanical engineering substantiation for new designs or existing plant.

Experience in writing accurate, detailed, and concise technical reports (e.g., design substantiations, basis of analysis, safety case references).

Experience in delivery accountability for mechanical engineering solutions.

Comfortable with engaging with existing and prospective clients, working at their sites, and investing time in understanding their issues, goals, and processes.

Please flag if you have experience in any of the following (but still apply if you might enjoy gaining that experience too) -

Experience in Finite Element Analysis, for example using ABAQUS.

Experience in piping and pressure vessel design and stress analysis.

Working, or authoring bids, within a safety critical and heavily regulated environment.

Experience in working with design codes such as ASME BPVC Section III, RCC-M, ASME B31.1, BS EN 13480 and BS EN13445.

Experience in tool/assessment automation, for example using PYTHON.

Or if you are chartered with a relevant professional institute (or approaching application for registration).

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 #RoadJobs #MechNPJobs

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.