Principal Mechanical Engineer – Development in London

At CloudHQ, our mission is to deliver flexible, efficient, and resilient data centre solutions to businesses worldwide. Founded by a pioneer in data centre REITs, we are a rapidly growing organisation with state‐of‐the‐art data centre sites globally.

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 Principal Mechanical Engineer – Development will take ownership of the design, planning, execution, and delivery of advanced mechanical systems for developer‐led hyperscale data centre 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.

• Serve as the subject‐matter expert for the design and delivery of mechanical systems that meet tiered reliability, scalability, and energy efficiency goals in hyperscale environments.
• 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.
• Optimise efficiency across mechanical systems to achieve maximum performance and minimise operating costs.
• Design redundant mechanical systems to support continuous operations during peak loads and maintenance windows.
• Lead mechanical scopes across all phases of development, including early‐stage development, design reviews, and tendering.
• Collaborate with wider development teams during pre‐construction planning, providing input on master plans, feasibility studies, and design risk mitigation.
• Support the construction team during the construction process, acting as a design guardian and providing engineering support where necessary.
• Manage design consultants throughout the development process across multiple European jurisdictions.
• Ensure all designs comply with European building codes, ASHRAE standards, and ISO directives.
• Incorporate energy optimisation technologies and carbon reduction strategies into designs, meeting enterprise sustainability objectives and achieving optimal PUE targets.
• Monitor adherence to environmental regulations, including waste management, material use, and emissions minimisation.
• Partner with structural and electrical engineers to ensure seamless integration of mechanical systems with building designs and other infrastructure.
• Collaborate with tenant teams to address unique mechanical requirements, tailoring cooling solutions to their requirements.
• Build and maintain strong relationships with contractors, vendors, and consultants, ensuring project milestones and performance deliverables are consistently met.
• Lead design team meetings, presenting technical insights and ensuring actionable outcomes for mechanical scopes.
• Research emerging industry innovations, including liquid cooling, IoT‐controlled sensor technologies, and AI‐driven predictive maintenance tools, integrating them into CloudHQ projects where feasible.
• Develop and implement modular mechanical solutions, leveraging prefabrication strategies to reduce construction timelines and costs.
• 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 centres, including HVAC, cooling infrastructure, fire suppression systems, and air distribution networks.
• Advanced knowledge of thermodynamics, fluid mechanics, and heat rejection strategies for large‐scale mission‐critical facilities.
• Proficiency in mechanical system modelling and software tools, including AutoCAD, Revit, BIM platforms, and energy modelling systems.
• Comprehensive understanding of EU environmental standards, EN & ASHRAE standards, ISO certifications, and local building codes.
• Proven ability to handle complex mechanical scopes across multiple simultaneous projects while maintaining strict adherence to schedules and budgets.
• Strong communication and stakeholder engagement skills, capable of working across multidisciplinary teams and with external contractors.
• Willingness to travel regularly within Europe (up to 50% travel based on project needs).

• Bachelor's or Master's Degree in Mechanical Engineering, or equivalent technical discipline.
• Professional certifications such as LEED AP, ASHRAE Certification, or CIBSE/IMECHE Membership are highly desirable.
• Minimum 10+ years of technical and project management experience delivering mechanical systems for developer‐led data centre projects.
• Fluency in English (required); fluency in German, French, or other European languages (preferred).

At CloudHQ, we create cutting‐edge data centres that fuel the digital infrastructure of the future. As a Principal Mechanical Engineer– Development, you'll work at the intersection of innovation, technology, and engineering excellence, helping build sustainable facilities in mission‐critical environments.

Be part of a team that values collaboration, growth, and impact in the exciting world of hyperscale development.

Apply today! Visit our LinkedIn page or contact recruiting@cloudhq.com for more information.

Seniority level: Mid‐Senior level

Employment type: Full‐time

Job function: Engineering and Information Technology