Senior​/Principal Mechanical Engineer

Are you inspired by the opportunity to contribute to fast-paced, complex projects at the forefront of the nuclear industry? If so, this is your chance to help shape the future of nuclear with purpose and impact.

AtkinsRéalis is a leading global multi-disciplinary consultancy where your work goes beyond a job, it becomes a meaningful contribution to shaping a more sustainable future for generations to come. We take pride in creating an environment where collaboration, inclusion, and diverse perspectives are truly valued. Here, your voice matters, and your ideas can drive real change.

Within our thriving Nuclear business, we are continuing to grow following strong success across the UK's nuclear renaissance. Our Mechanical and Electrical Capability is expanding, and we are looking for Senior Mechanical Engineers to join us across design, project, and site-based roles. We are committed to helping you find a role aligned with your strengths, interests, and career aspirations, supporting you every step of the way.

In this role, you will have the opportunity to:

• Apply your technical expertise to contribute to impactful projects across the nuclear industry.
• Influence outcomes by delivering thoughtful, high-quality engineering solutions.
• Engage with diverse opportunities across design, project, and site-based environments.
• Contribute your knowledge or awareness of engineering practices within safety-regulated industries.
• Collaborate with a supportive and purpose-driven team across specialisms such as:
  • Mechanical handling
  • Large-scale diesel equipment
  • Turbine generators and associated balance-of-plant systems
  • Mechanical and electrical layouts
  • Installation and engineering delivery
• Grow and develop your capabilities while working in a dynamic and evolving sector.

We are looking for individuals who bring both capability and curiosity, and who are motivated to contribute to meaningful, high-impact work. You may identify with the following:

• Chartered or Incorporated Member of a recognised professional institution.
• Demonstrated experience, or strong awareness, of engineering practices within safety-regulated industries.
• Ability to apply technical knowledge to influence project outcomes and deliver quality solutions.
• Experience or interest in areas such as mechanical handling, diesel equipment, layouts, or installation.
• A collaborative mindset, with the confidence to share ideas and contribute to team success.
• A proactive and growth-oriented approach, with a desire to learn, develop, and make a positive impact.

Explore the rewards and benefits that help you thrive – at every stage of your life and your career. Enjoy competitive salaries, employee rewards and a brilliant range of benefits you can tailor to suit your own health, wellbeing, financial and lifestyle choices. Make the most of a myriad of opportunities for training and professional development to grow your skills and expertise.

And combine our hybrid working culture and flexible holiday allowances to balance a great job and fulfilling personal life.

Be rewarded. Find out more.

We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's'infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We're committed to leading our clients across our various end markets to engineer a better future for our planet and its people.

Find out more.

Security clearance

This role may require security clearance and offers of employment will be dependent on obtaining the relevant level of…