About Assystem
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’ experience in highly regulated sectors, we provide our customers with engineering, project management, digital services and solutions to optimise the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked third in the world for nuclear engineering. To ensure a viable, efficient, and reliable energy future for all.
Job Description
Your Mission
Assystem are seeking a Building Services Engineer to work within the Approval Authority of a major Client. The Building Services Engineer will be working as part of a multi‑disciplinary engineering team within the Approval Authority, the primary purpose of the role is to directly support current operations and future programmes.
The Client team consists of Mechanical, Civil, Structural, Building Services, Electrical, Piping Engineers and are responsible for the authorship, development, assessment, and maintenance of Engineering Design Substantiation for Nuclear Facilities, ensuring Design Intent, Critical Safety Factors and Safety and Operational Requirements are met and are consistent with current good practice and legislative/regulatory requirements.
Key Responsibilities
* ✍️ Develop and maintain Nuclear Infrastructure Design Substantiation documents.
* 🔧 Manage and assess design changes and concessions.
* 🛡️ Present design substantiations to nuclear safety and Client “Due Process” committees.
* 📋 Produce and update EIMT (Examination, Inspection, Maintenance & Testing) schedules and procedures.
* 📘 Produce and review Periodic Review of Safety (PRS) reports.
* 🤝 Provide technical advice and support to internal and external stakeholders.
* 🧐 Develop scopes for Independent Technical Assessments (ITA) and Independent Peer Reviews (IPR).
* ⚙️ Apply specialist engineering expertise in nuclear/high‑hazard environments.
* ✔️ Produce robust technical justifications for design modifications.
* 🔍 Review and check technical reports, safety case submissions, calculations, and engineering documents.
Qualifications
Position Requirements
Experience – Essential
* 🌬️ Strong HVAC building‑services design experience, including supporting systems (e.g., LTHW, fire dampers).
* 📊 Ability to analyse and illustrate psychrometric properties and HVAC design processes.
* 📚 Knowledge of key legislation and standards for building services and the built environment.
* 🔎 Familiarity with CIBSE Guides, ASHRAE Standards and recognised industry technical guidance.
* ✍️ Experience producing detailed technical reports—ideally for design substantiation in high‑hazard industries.
* ✔️ Proven ability to author robust technical justifications for design modifications in safety‑critical environments.
* 🤝 Experience contributing engineering input on multi‑disciplinary projects (industrial or maritime preferred).
Experience – Desirable
* ⚓ Experience working within HMNB Clyde or similar high‑risk environments.
* 🧪 Familiarity with safety case development methods (e.g., HAZID/HAZOP).
* ☢️ Experience in the UK nuclear industry (energy or defence), especially safety‑related structures/systems.
* 📖 Knowledge of UK and US nuclear regulation, practice, and nuclear‑specific codes/standards.
Qualifications & Training
Essential
* 🎓 Minimum HNC or equivalent in a relevant engineering discipline.
* 🛠️ Incorporated Engineer status or equivalent experience.
* ☢️ Willingness to complete an introductory nuclear course within 6 months (if coming from a non‑nuclear background).
Desirable
* 🎓 Engineering degree.
* 🥇 Chartered Engineer status.
Additional Information
🔹 The Group is currently ranked Third in the world for nuclear engineering.
🔹 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.
At Assystem, we celebrate diversity and creativity. We believe in harnessing unique perspectives to shape innovative solutions. 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. 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.
Seniority level
Executive
Employment type
Full‑time
Job function
Business Consulting and Services
Location
Glasgow, Scotland, United Kingdom
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