Mechanical Design Engineer

Ingénieur en conception mécanique

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Mercury est le leader européen des solutions de construction.

Mechanical Design Engineer, Paris, France

Mercury is the European leader in construction solutions. We build and manage complex engineering & construction projects for the world’s leading corporations. Our solutions help deliver technologies and life changing advancements that connect people, communities, and businesses, giving them the power to achieve incredible things. Our people have the courage to be innovative. Their determination and sharp focus enable us to deliver with certainty, time and time again.

We deliver our clients’ visions through leading edge construction solutions across multiple sectors, including Enterprise Data Centres, Advanced Technology & Life Sciences, Hyperscale Data Centres, Fire Protection.

At Mercury, it is our duty to encourage and back our people to realise their vision of themselves. We place them at the heart of what we do, providing challenging opportunities to develop within a great team in a supportive environment that allows them to reach their full potential.

Key Responsibilities of the Role

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• Develop, review and coordinate mechanical building services designs for data centre projects from concept through detailed design, construction, commissioning and handover.
  
• Support the production and review of mechanical design deliverables including drawings, specifications, technical submittals, calculations and equipment schedules.
  
• Coordinate with consultants, specialist vendors, subcontractors and internal project teams to ensure design compliance and timely delivery of design information.
  
• Review consultant and vendor design information to ensure compliance with client requirements, project specifications and applicable codes and standards.
  
• Assist with the preparation and management of RFIs, technical queries and design change requests throughout the project lifecycle.
  
• Review and comment on mechanical technical submittals, shop drawings and material approvals prior to issue to the client and design team.
  
• Participate in multidisciplinary design coordination meetings and BIM reviews to identify and resolve design clashes and interface issues.
  
• Support the development and maintenance of mechanical asset registers, equipment schedules and design trackers.
  
• Work closely with procurement teams to ensure equipment selection aligns with project specifications, technical requirements and programme milestones.
  
• Evaluate alternative technical solutions and contribute to value engineering initiatives while maintaining system reliability and performance requirements.
  
• Assist site teams with technical support during installation, testing and commissioning activities.
  
• Participate in factory acceptance testing (FAT), site acceptance testing (SAT), integrated systems testing (IST) and commissioning activities as required.
  
• Support the preparation and review of O&M documentation, as-built drawings and project closeout deliverables.
  
• Monitor design deliverables against project programme requirements and proactively identify risks to design, procurement and construction activities.
  
• Collaborate with mechanical, electrical, CSA, controls and commissioning teams to ensure coordinated project delivery.
  
• Provide mentoring and technical guidance to graduate and junior engineers where required.
  
• Support tender reviews, technical bid evaluations and pre-construction engineering activities for new projects.
  
• All other duties associated with this role and/or reasonably required by the Company. The Company reserves the right to vary the scope and nature of the Employee’s normal duties to consider changes in the Company’s work patterns and practices and the requirements of its business.
  

Essential Qualifications

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• Bachelor's Degree (BEng/BSc) in Mechanical Engineering, Building Services Engineering, Energy Engineering, or related discipline.
  
• Professionally qualified or actively working towards Chartered Engineer status (Engineers Ireland, IMechE, CIBSE or equivalent).
  
• Strong understanding of mechanical building services systems and applicable European and international standards.
  

Essential Experience

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• Minimum 5-8 years' experience in Mechanical Design Engineering within mission-critical, data centre, pharmaceutical, semiconductor, industrial, or large-scale commercial construction projects.
  
• Experience supporting projects through all design stages from concept and detailed design through procurement, i