Principal Mechanical Design Engineer (Data Centres) - Dublin Location: Dublin (Hybrid) Salary: Up to €100,000 + bonus + full package If you're ready to step into a true leadership role on some of the most advanced data centre projects in Europe, this is a standout opportunity. You'll join a globally recognised engineering environment delivering hyperscale, high-performance infrastructure, where your input genuinely shapes design, strategy, and client outcomes. What you'll be doing: • Lead mechanical design across major data centre builds from concept to delivery • Shape innovative cooling and energy-efficient solutions for mission-critical environments • Act as a senior technical voice with clients and internal stakeholders • Mentor and develop engineers, influencing the next generation of talent • Play a key role in driving technical excellence and project success What you'll bring: • Strong experience in mechanical building services design • Proven track record in data centres or mission-critical projects • Leadership experience or readiness to step into a principal role • Passion for sustainable, high-performance design Why this role stands out: • Work on flagship, global data centre projects • Genuine influence on design and decision-making • Clear pathway into senior leadership • Flexible working + strong benefits + high-impact role