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Senior / Principal Mechanical Engineer - Nuclear

Job Description

Are you an experienced Mechanical Engineer who is passionate about making the world a better place? Would you be excited to play a part in supporting the fight against climate change?

Do you thrive in collaborative, creative environments?

Are you looking for a challenging role that allows flexible working and work-life balance? If this sounds like you, then we’d love to hear from you.

We are looking for Senior / Principal Mechanical Engineers to join our expanding Reactor Operations team, based in the UK. In this role, you will lead and manage a diverse and challenging range of complex projects for our clients, with opportunities to work within AtkinsRéalis design teams or directly with our clients by being embedded into their major programmes.

Whether you possess a breadth of experience from working across different markets or industries, or you are a Subject Matter Expert, we have the pipeline of opportunities to ignite your career and take your skills and experience to the next level. The variety and scale of projects we work on means that there is something for everybody, and we work hard to make sure that all of our staff have fulfilling and rewarding careers. Whatever our individual roles, we approach everything we do with a sense of curiosity, care, courage and community.

You will have the opportunity to apply your existing skills and develop new skills across a wide range projects across the full UK nuclear industry. In Reactor Operations, your core work will involve leading the design and substantiation of mechanical equipment to the highest standards of safety, quality, and efficiency, to enable the continued operation and life extension of our UK fleet of nuclear power stations and nuclear-powered submarines. Our team also work closely with our Power New Build business, supporting Hinkley Point C, Sizewell C, and the development of Small Modular Reactors and Fusion Energy reactors, as well as our Decommissioning business, supporting the safe dismantling, processing and packaging of nuclear waste at the UK’s nuclear estate at Sellafield and across the UK’s decommissioning power stations and nuclear-powered submarines.

Your purpose:

  • Leading on the delivery of a wide range of mechanical engineering projects.
  • Provide technical expertise and guidance to project teams.
  • Performing feasibility and optioneering studies to generate design solutions to problems.
  • Development of engineering solutions through the design lifecycle; Concept, Scheme, Detailed Design and Construction.
  • Supporting the development of bids and value propositions.
  • Management of project budgets, schedules, and resources to ensure timely and cost-effective delivery.
  • Confidently liaising with, presenting to, and influencing stakeholders at all levels both internally and externally, in understanding their issues, goals, and processes and to build strong, lasting relationships.
  • Supporting and developing the careers of junior engineers, fostering a culture of continuous learning and development.

What you can bring:

  • Degree qualified mechanical engineer, or other relevant qualification.
  • Chartered or incorporated with a relevant professional institute e.g., IMechE.
  • Experience leading the design and/or substantiation of mechanical equipment, which could include mechanical handling systems, machinery, test rigs, or mechanical components.
  • Experience operating engineering software for production of 3D CAD models, drawings, calculations, and Finite Element Analysis models.
  • Experience working within design codes, standards and regulations typical for the engineering industry e.g., ASME, Eurocodes, BS EN13001, RCC-M, machinery directive, HS&E legislation.
  • Experience in hazard / fault identification studies e.g., ERICPD, HAZOP, HAZAN, FMEA.
  • Experience in writing, checking, reviewing, and approving technical reports and documentation e.g., design calculations, basis of design, safety case reports, design reports.
  • You are comfortable using your own judgement when managing uncertainty and technical risk.
  • You are excited when you identify new opportunities, win work and contribute to growth.
  • Previous experience of working in the UK nuclear industry, or another highly regulated industry, would be an advantage.

Why work for AtkinsRéalis?

The UK is the first major economy to legislate for a Net Zero target by 2050. To achieve this, our 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.

We value your diversity and believe that everyone deserves to thrive – no exceptions. You'll be part of a culture committed to finding new talent from underrepresented groups. We're Disability Confident, an Inclusive Employer, and support STEM Returners. We also want to see more women in senior roles at AtkinsRéalis. In the energy sector, we've signed up to the AXIS Pledge, promising to make equal pay, equal leadership, and equal opportunities a reality.

Security clearance:

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.  

Average salary estimate

$75000 / YEARLY (est.)
min
max
$60000K
$90000K

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What You Should Know About Senior / Principal Mechanical Engineer - Nuclear, Slihrms

Are you ready to steer your career into the future of energy? Join AtkinsRéalis as a Senior / Principal Mechanical Engineer - Nuclear in Derby! Here, you’ll be at the forefront of innovative solutions combating climate change while leading a vibrant team of professionals. Your role will span an exciting array of projects that include designing mechanical systems for our nuclear power stations and submarines. You'll collaborate directly with clients and different teams, surrounding yourself with creativity and opportunity. With us, each day brings a challenge and a chance to broaden your skills. You will not only manage project budgets and schedules but also foster your junior engineers' growth, cultivating a culture of continuous development. Your expertise in mechanical equipment design and safety standards will be essential in delivering solutions that ensure our nuclear fleet operates safely and efficiently. Whether you’re a seasoned expert or looking to take your first steps in nuclear engineering, we have diverse projects that excite. By joining our Reactor Operations team, you can make a meaningful impact in an industry poised for innovation. Plus, we provide a flexible working environment that promotes your work-life balance, so you can thrive both personally and professionally. Come celebrate curiosity and commitment with us—let’s engineer a sustainable future together!

Frequently Asked Questions (FAQs) for Senior / Principal Mechanical Engineer - Nuclear Role at Slihrms
What are the responsibilities of a Senior / Principal Mechanical Engineer at AtkinsRéalis?

As a Senior / Principal Mechanical Engineer at AtkinsRéalis, your primary responsibilities will include leading mechanical engineering projects from concept to completion, providing technical guidance to teams, performing feasibility studies, and developing engineering solutions aligned with high safety standards. You will also be managing budgets, schedules, and resource allocations to ensure project success while building strong partnerships with stakeholders.

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What qualifications are needed for the Senior / Principal Mechanical Engineer position at AtkinsRéalis?

To qualify for the Senior / Principal Mechanical Engineer role at AtkinsRéalis, you should hold a degree in mechanical engineering or equivalent. Professional registration as Chartered or Incorporated with institutions like IMechE is highly valued. Experience with mechanical equipment design, project management, and familiarity with engineering software and codes such as ASME and Eurocodes will set you apart.

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How does the Senior / Principal Mechanical Engineer role contribute to climate change initiatives at AtkinsRéalis?

In this role, you will play a crucial part in combating climate change by leading projects focused on sustainable energy solutions in nuclear power. Your engineering efforts will help ensure the safe operation and life extension of nuclear facilities, thus contributing to the UK’s goal of achieving a Net Zero target by 2050 through reliable energy production.

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What opportunities for career growth are available for Senior / Principal Mechanical Engineers at AtkinsRéalis?

At AtkinsRéalis, Senior / Principal Mechanical Engineers can expect a pathway filled with opportunities for career advancement. You will have access to diverse projects across the nuclear sector, mentorship programs for junior engineers, and continued professional development that can lead to evolving roles within the company.

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What is unique about the work culture at AtkinsRéalis for Mechanical Engineers?

AtkinsRéalis promotes a work culture characterized by collaboration, innovation, and inclusivity. Mechanical Engineers are encouraged to express curiosity and creativity, and the organization values diverse backgrounds. You will benefit from flexible working arrangements that allow you to balance your professional and personal life while working on meaningful projects.

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Common Interview Questions for Senior / Principal Mechanical Engineer - Nuclear
Can you describe your experience leading mechanical design projects?

Highlight specific projects where you led the design process, discussing your role in developing solutions and managing timelines and budgets. Emphasize any innovative approaches you took to overcome challenges and how you collaborated with your team to achieve success.

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What are key safety considerations when designing mechanical equipment for nuclear projects?

Discuss your understanding of regulatory standards and safety protocols specific to the nuclear industry. Share examples of how you’ve implemented these considerations in past projects and your role in ensuring compliance throughout the design and operational phases.

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How do you approach stakeholder engagement and communication in your projects?

Explain your communication strategies, focusing on how you identify stakeholder needs, maintain transparency, and build relationships. Provide examples of how effective stakeholder engagement benefited your projects.

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What engineering software are you proficient in, and how have you applied it in your work?

List the software tools you’re comfortable with, such as CAD and Finite Element Analysis tools. Elaborate on how you’ve utilized these tools in past projects for design, analysis, or reporting, and the impact they had on the project outcomes.

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Describe a challenging engineering problem you faced and how you resolved it.

Share a specific situation where you encountered a technical challenge. Discuss your analytical approach to diagnosing the issue, the steps you took to find a solution, and the final outcome as a result of your actions.

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How do you manage project budgets and timelines while ensuring quality?

Explain your project management methodology, including your approach to estimating costs, monitoring expenditures, and tracking progress. Provide examples of tools or techniques you use to maintain quality while adhering to schedules.

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What methods do you employ for conducting feasibility studies?

Describe your approach to feasibility studies, covering aspects such as research, stakeholder input, and analysis of potential solutions. Share an example where your assessment influenced project direction.

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Can you detail your experience with hazard identification studies?

Discuss specific hazard identification studies you’ve participated in, such as HAZOP or FMEA. Highlight your contributions and the importance of these studies in mechanical design, especially within regulatory environments.

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How have you contributed to the development of junior engineers?

Describe your mentoring experiences, focusing on how you’ve provided guidance, shared knowledge, and supported their career development. Emphasize the value of creating a learning environment in engineering teams.

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What excites you most about working in the nuclear sector?

Share your passion for the nuclear sector, focusing on the technological advancements, career opportunities, and the significant role it plays in sustainable energy. Discuss how you envision your career evolving within this exciting industry.

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EMPLOYMENT TYPE
Full-time, on-site
DATE POSTED
April 22, 2025

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