Senior Mechanical Design Engineer (Data Centres) - Dublin | Mission-Critical Projects | Hybrid Working Are you a Senior Mechanical Design Engineer with a passion for delivering cutting-edge data centre and mission-critical infrastructure projects? This is an opportunity to join a globally recognised engineering consultancy working at the forefront of sustainable, high-performance building design in Dublin. The Role As a Senior Mechanical Design Engineer, you will play a key role in the design and delivery of hyperscale and colocation data centre projects across Ireland and Europe. You'll collaborate with multidisciplinary teams to create innovative, energy-efficient mechanical systems that meet the demands of modern digital infrastructure. Key Responsibilities • Lead the mechanical design of data centre and mission-critical projects • Develop and review HVAC, cooling, and ventilation systems for high-load environments • Produce detailed design calculations, specifications, and technical reports • Collaborate with electrical, structural, and sustainability teams • Engage with clients, contractors, and stakeholders throughout project lifecycles • Ensure compliance with industry standards, codes, and best practices • Support junior engineers and contribute to team development Requirements • Proven experience as a Mechanical Design Engineer within data centres or mission-critical environments • Strong expertise in HVAC systems, cooling strategies (e.g. CRAH/CRAC, liquid cooling), and thermal modelling • Proficiency in design tools such as Revit, AutoCAD, and IES or similar simulation software • Solid understanding of sustainability, energy efficiency, and low-carbon design principles • Excellent communication and stakeholder management skills • Degree in Mechanical Engineering or Building Services Engineering (or equivalent) • Chartered status (or working towards) is highly desirable What's on Offer • Work on high-profile data centre projects shaping the future of digital infrastructure • A collaborative and forward-thinking engineering environment • Strong focus on innovation, sustainability, and professional development • Competitive salary and benefits package • Flexible and hybrid working options in Dublin