Principal Mechanical Engineer

Principal Mechanical Engineer Assystem Glasgow, Scotland, United Kingdom 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. Drawing on more than 55 years of experience in highly regulated sectors, we provide engineering, project management, digital services and solutions to optimise 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 Mission: We are seeking an Experienced Mechanical Engineer to support the technical capabilities of one of our major client’s Design Authority (DA) near Glasgow. Key Responsibilities: Deliver technical excellence in specifying, producing, and assessing design packages for infrastructure. Define reliability and operational constraints for infrastructure systems. Assess work control procedures for infrastructure maintenance. Evaluate infrastructure design, material state and ageing mechanisms to ensure continued safe operation of facilities. Promote a robust safety and security culture in all work practices. Act as an intelligent customer, ensuring safety‑related contracts meet all requirements. Position Requirements: Essential: Minimum 5 years experience in the design assessment of mechanical plant and associated installations. Experience producing robust technical justifications to authorise mechanical design modifications. Ability to develop practical, creative and cost‑effective solutions for design changes/modifications to plant infrastructure. Strong understanding of British and international design standards. Proven ability to make evidence‑based decisions using multiple data sources. HAZID/HAZOP studies experience. Strong time management skills with the ability to effectively manage and prioritise workload. Qualifications: Key Requirements for the role: HNC or equivalent qualifications in a relevant engineering discipline. Detailed knowledge of Design Intent for mechanical within nuclear or a similar high‑hazard industry. Desirable: Incorporated Engineer status or equivalent experience. Degree or equivalent qualifications in a relevant engineering discipline. If you meet these qualifications and are ready to take on an exciting role in a high‑impact environment, we’d love to hear from you. Additional Information The Group is currently ranked Third in the world for nuclear engineering. Dynamic career management policy to enable employees to progress through five business lines. Opportunities to work on exciting, global projects. Access to an employee assistance programme with free mindfulness, health and wellbeing resources and a confidential support line available 24/7. Discount vouchers for days out and restaurants, eye test and glasses vouchers, cycle‑to‑work scheme, free flu jabs. At Assystem, we celebrate diversity and creativity. Your skills and daring spirit are what truly matter; join us and help shape the future. Sole UK national with SC or ability to gain Security Clearance. Staff or umbrella contractor. Ideally 3 days in the office. We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. Seniority level Mid‑Senior level Employment type Full‑time Job function Defense and Space Manufacturing Referrals increase your chances of interviewing at Assystem by 2x. #J-18808-Ljbffr