The role will also involve regular travel across our sites in EMEA. At CloudHQ, our mission is to deliver flexible, efficient, and resilient data center solutions to businesses worldwide. Founded by a pioneer in data center REITs, we are a rapidly growing organization with state-of-the-art data center sites globally, with locations in Ashburn, London, Frankfurt, Paris, Milan, Osaka, São Paulo, and more. As we embark on an exciting phase of global growth, we are building a diverse and talented team to drive our success and help shape the future of mission-critical infrastructure at CloudHQ. The Senior Mechanical Engineer will take ownership of the design, planning, execution, and delivery of advanced mechanical systems for developer-led hyperscale data center projects across Europe. This role combines technical expertise in designing, testing, and optimizing mechanical systems, including HVAC, cooling infrastructure, fire suppression systems, and thermal load management, with project management skills to ensure on-time, within-budget, and compliant delivery across all project phases. The successful candidate will act as a trusted technical advisor and project leader, collaborating with cross-functional teams, external contractors, and tenants to deliver high-performance, sustainable and mission-critical mechanical infrastructure tailored to meet operational demands and evolving industry standards. Review detailed engineering specifications and calculations for HVAC systems, chilled water networks, air handling units, cooling towers, and fire suppression systems, ensuring compliance with regulatory standards. Review CFD modelling software to simulate airflow dynamics, thermal load distribution, and cooling efficiency, identifying potential hotspots and operational risks. Design redundant systems to support continuous operations during peak loads and maintenance windows. Project Management & Lifecycle Oversight Lead mechanical scopes across all phases of development, including early-stage development, design reviews, and tendering Collaborate with development teams during pre-construction planning, providing input on master plans, feasibility studies, and design risk mitigation. Manage mechanical system integration during construction, acting as the primary liaison between contractors, consultants, and the internal project team. 9 for data centers), and ISO directives. Monitor adherence to environmental regulations, including waste management, material use, and emissions minimization. Partner with structural and electrical engineers to ensure seamless integration of mechanical systems with building designs and other infrastructure. Build and maintain strong relationships with contractors, vendors, and consultants, ensuring project milestones and performance deliverables are consistently met. Research emerging industry innovations, including liquid cooling, IoT-controlled sensor technologies, and AI-driven predictive maintenance tools, integrating them into CloudHQ projects where feasible. Introduce advanced monitoring systems to enable operational visibility and real-time performance tuning across mechanical systems. Expertise in designing and delivering mechanical systems for data centers, including HVAC, cooling infrastructure (air-cooled, water-cooled, hybrid cooling), fire suppression systems, and air distribution networks such as AHUs and pressurized systems. Proficiency in mechanical system modelling and software tools, including: AutoCAD, Revit, and BIM platforms for mechanical design. CFD modelling software (e.g., Energy modelling systems for efficiency analysis and reporting. Regulatory Knowledge Comprehensive understanding of EU environmental standards, EN & ASHRAE standards, ISO certifications, and local building codes for designing mechanical systems. Project Management Skills Proven ability to handle complex mechanical scopes across multiple simultaneous projects while maintaining strict adherence to schedules and budgets. Skilled in generating detailed documentation, reports, and technical reviews, ensuring compliance across all stages of development. Travel Flexibility Willingness to travel regularly within Europe to project sites and contractor facilities (up to 50% travel based on project needs). Bachelor's or Master's Degree in Mechanical Engineering, or equivalent technical discipline. Experience: Minimum 8+ years of technical and project management experience delivering mechanical systems for developer-led data center projects, industrial facilities, or similar mission-critical environments. Languages: Fluency in English (required); fluency in German, French, or other European languages (preferred) to support regional collaboration. At CloudHQ, we create cutting-edge data centers that fuel the digital infrastructure of the future. As a Senior/Mechanical Engineer – Development, you'll work at the intersection of innovation, technology, and engineering excellence, helping build sustainable facilities in mission-critical environments. Visit our LinkedIn page or contact [email protected] role will also involve regular travel across our sites in EMEA.