Our Vacancy
Principal Mechanical Engineer
- Defence
- Permanent /
- Sunderland
- United Kingdom
- 08/03/25
- On site
Assystem is an international company with one mission: accelerate the energy transition around the world.
Every day, our 7,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.
We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.
Drawing on more than 55 years’ experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimize the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked second in the world for nuclear engineering.
To ensure a viable, efficient, and reliable energy future for all
Job Description
Your future team:
Join a leading Nuclear Engineering company that pioneers innovative engineering solutions across complex projects. With a reputation for technical excellence and a commitment to safety, we offer a dynamic environment where your expertise will make a real impact. If you’re looking to take on a technically challenging and rewarding role in a collaborative and forward-thinking company, we want to hear from you.
Your missions:
As a Principal Mechanical Engineer, you will be at the forefront of delivering cutting-edge engineering solutions, from initial concept to implementation. You will provide technical leadership, oversee project deliverables, and ensure compliance with relevant regulations and quality standards. Day to day responsibilities will include:
🎯 Leading and delivering engineering solutions from optioneering through to implementation.
🎯 Manage budgets, timelines, and resources effectively.
🎯 Oversee testing and commissioning processes.
🎯 Collaborate with cross-disciplinary teams, integrating safety and engineering disciplines.
🎯 Provide guidance and tasking to junior engineers and designers, offering subject matter expertise.
🎯 Lead packages of work and support project managers with performance tracking.
🎯 Ensure compliance with relevant industry standards, including BS EN 13001, BS 2573, and BS EN 13155.
Why join the community of Switchers?
As one of the Top 3 Nuclear Engineering companies in the world, Assystem offer a competitive benefits package which includes:
💥25 days of annual leave + bank holidays
💥8% company pension contributions
💥Healthcare cash-plan to get money back on dental, medical, physical care
💥Employee assistance programme including 24/7 access to free mental health support, virtual gym classes and more
💥Get professional and industry membership fees paid for.
My profile
Qualifications/Skills to be successful:
You should have extensive experience within
💡 Drive Mechanisms
💡 Hydraulic Systems
💡 Lifting Equipment Design
💡 Welding Design
💡 Design for Manufacture
💡 Mechanical Handling
Experience using the below software is essential
💡 Inventor
💡 AutoCAD
💡 Vault
💡 MathCAD
💡 Staad Pro (preferred)
💡 Revit (preferred)
In-depth understanding of key regulations and standards is essential
💡 Supply of Machinery (Safety) Regulations
💡 CDM Regulations
💡 UKCA marking
Required experience:
🌟 Demonstrable managing and delivering engineering projects with multi-discipline teams.
🌟 Background in mechanical handling, lifting, and crane design.
🌟 Knowledge of Systems Engineering approaches, including Requirements Capture and Validation & Verification.
🌟 Proven experience managing engineering scope from Concept Design to Installation.
🌟 Strong stakeholder management and communication skills.
🌟 Understanding and application of nuclear safety cases and engineering substantiation.
🌟 Experience within the nuclear/defence industry.
🌟 Familiarity with legislative regulations such as CDM, Machinery Directive, and PED.
🌟 Experience working with NEC3/NEC4 contracts.
If you are a forward-thinking engineer with a passion for delivering excellence, we want to hear from you! Apply today and take your career to the next level.
🔹 Staff positions, umbrella contractors considered
🔹 Will consider base at any Assystem office but preferably Sunderland, Glasgow, Derby, Bristol, Blackburn in that order
🔹 Sole UK Nationals required, capable of securing SC status. Can commence work with BPSS.
We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.
Are you a prospective or recent graduate?
Assystem offers you the opportunity to join our Switch to Grow UK Graduate Scheme, where you’ll gain hands on experience in engineering, digital services, and project management by working on some of the world’s most critical energy projects.
Be part of the challenge of the century; accelerating the switch to low carbon energy!
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