Principal Mechanical Engineer – Construction

About CloudHQ

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 in locations such as Ashburn, London, Frankfurt, Paris, Milan, Osaka, and São Paulo. As we embark on an exciting phase of global growth, we are looking for top‑tier talent to drive our success and shape the future of CloudHQ.

Role Overview

The Principal Mechanical Engineer, Construction, Subject Matter Expert (SME) will provide specialized expertise in the design, installation, and commissioning of mechanical systems for developer‑led data center construction projects across Europe. Acting as a technical authority, the SME will ensure mechanical systems such as HVAC, CO₂ cooling, and fire suppression systems are designed and delivered efficiently, meeting the highest standards for scalability, reliability, energy efficiency, and compliance.

Key Responsibilities

Technical Expertise in Mechanical Design and Delivery

• Serve as CloudHQ's technical leader for mechanical systems, including HVAC, chillers, fire suppression, fuel delivery, and air‑handling units.
• Provide guidance during architectural and engineering design reviews to ensure mechanical systems adhere to CloudHQ standards, tenant requirements, and operational goals.
• Ensure designs incorporate redundancy, maintainability, and energy optimisation for hyperscale environments.
• Collaborate with internal teams and external consultants to establish technical performance guidelines for mechanical infrastructure.
• Identify opportunities for value engineering to improve cost efficiency while maintaining quality and operational requirements.

Construction Oversight and Execution

• Support the Construction Management team during installation and commissioning phases by providing technical guidance on installation best practices for HVAC and cooling systems.
• Provide onsite oversight of mechanical system testing, troubleshooting, and final handover to operations.
• Proactively resolve onsite technical issues, ensuring alignment with design intent, schedule milestones, and operational standards.

Commissioning and Performance Validation

• Lead factory witness testing and validate critical system performance for equipment such as chillers, air‑handling units, cooling towers, and fire suppression systems.
• Oversee commissioning activities for mechanical systems to ensure quality and compliance with specifications.
• Collaborate with commissioning agents and contractors to ensure all equipment undergoes rigorous testing and meets performance benchmarks prior to operational handover.
• Provide detailed documentation and performance analysis for final commissioning reports.

Compliance and Risk Management

• Ensure mechanical designs and installations comply with European Union building codes, fire safety regulations, and environmental standards for energy efficiency and sustainability.
• Assess risks associated with mechanical system design or delivery and develop mitigation strategies to minimise delays or disruptions.
• Collaborate with internal teams to ensure regulatory and tenant‑specific compliance, including permitting processes and fire impairment management.

Stakeholder Collaboration and Leadership

• Act as a trusted technical advisor across all project phases, providing subject‑matter expertise to internal construction, engineering, and development teams.
• Collaborate with general contractors, consultants, vendors, and operations teams to align mechanical system delivery with overall project goals.
• Engage with tenants and their engineering teams to tailor mechanical infrastructure solutions to meet unique requirements.
• Represent CloudHQ in external meetings with contractors, utilities, equipment manufacturers, and regulatory bodies.

Documentation and Knowledge Sharing

• Maintain comprehensive and accurate technical records for design decisions, testing results, and commissioning reports.
• Contribute to best‑practice frameworks by incorporating lessons learned into future projects.
• Mentor CloudHQ staff on mechanical systems, sharing industry trends, emerging innovations, and deep technical insights.

Requirements

Technical Leadership in Mechanical Systems

• Expertise in designing and managing mechanical systems for mission‑critical facilities such as data centers, pharmaceutical p