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

Mechanical Engineer – Exciting Opportunity

We’re looking for a skilled Mechanical Engineer to develop and deliver engineering concepts for nuclear, civil, and marine projects. If you’re passionate about producing high-quality designs, collaborating with teams, and ensuring safety and compliance, this role is perfect for you! This would be an embedded role in support of a major Defence Client on a large infrastructure project.

Key Responsibilities:

• 🛠️ Develop Engineering Concepts – Create and deliver engineering solutions that meet project objectives in scope, quality, schedule, and cost.
• 📑 Documentation – Produce design reports and technical documentation within set timeframes and standards.
• 🤝 Team Collaboration – Work closely with the project team to ensure smooth project implementation.
• ✅ Compliance – Follow the Client’s Business Management System and ensure all quality and technical standards are met.
• ⚠️ Safety First – Maintain awareness of hazards and ensure a safe working environment.
• ⚙️ Project Work – Contribute to nuclear, civil, and marine projects with dedicated work packages.

What We’re Looking For:

• 🤝 A team player who can lead assigned tasks and support others when needed.
• 🗣️ A strong communicator who provides clear updates to the Lead Engineer and Project Manager.
• ⏱️ Excellent time management skills to deliver within agreed deadlines, cost, and quality standards.

Experience

• Minimum of 3 years design engineering experience in a highly regulated area.
• Experience in designing mechanical and nuclear process/plant systems (e.g., fresh water, demineralised water, radioactive effluent processing).
• Working level experience of the European standards is desirable, for example Eurocode 3.
• Strong awareness of the functional safety implications of process/plant design and safety systems.
• Proficiency in hand calculations, AutoCAD, and fabrication drawing standards (BS8888).
• Proficiency in Mathcad, AutoCAD, Autodesk Inventor (or equivalent), and MS Office.
• An appreciation for the engineering design cycle from Concept through to Manufacture.
• Experience in other safety-critical plant/process designs will also be considered.

What would your experience look like?

• 🏗️ 3+ years of design engineering experience in a highly regulated industry.
• ⚙️ Expertise in designing mechanical and nuclear process/plant systems, such as fresh water, demineralised water, and radioactive effluent processing.
• 📜 Experience with European standards (e.g., Eurocode 3) is highly desirable.
• 🚨 Strong understanding of the functional safety requirements of process/plant design and safety systems.
• ✍️ Proficient in hand calculations, AutoCAD, and fabrication drawing standards (BS8888).
• 💻 Skilled in Mathcad, AutoCAD, Autodesk Inventor (or similar), and MS Office.
• 🔄 Familiarity with the engineering design cycle, from concept through to manufacture.
• ✅ Experience in other safety-critical plant/process designs is an added advantage.

• 🎓 Minimum 2:1 BEng in Mechanical Engineering (or equivalent). A Master’s degree is highly desirable.

• ⚙️ Nuclear or Marine System Knowledge – Completion of a Nuclear Introductory Course or equivalent experience is preferred.
• SC Clearance required to commence role

• Hybrid working with 2-3 days in a Glasgow office

Why Join the Switchers Community?

🔹A dynamic career management policy to enable our employees to progress through our five business lines: operations, project, technical, sales and support functions

🔹Provide opportunities to work on exciting, global projects

🔹Access to an employee assistance programme with free mindfulness, health, wellbeing resources and a confidential support line available 24/7 via phone or text

🔹Discount vouchers for days out and restaurants, eye test and glasses vouchers, cycle to work scheme, free flu jabs

🔹Enhanced sick pay

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.