The Team We are a global, independent, multi‐disciplinary consultancy delivering sustainable engineering and design solutions across the built environment. With more than 1,200 engineers and designers across 29 locations, we apply our expertise to local market conditions to deliver resilient, low‐carbon engineering solutions. We are 100 % partner‐owned and were named Building Magazine's Engineering Consultant of the Year in 2024, 2022 and 2021.

Our dedicated data centre team was established in 2006 and has delivered over 2,000 MW of capacity worldwide. In 2025 we were named Data Centre Consultancy of the Year by Data Centre Review and ranked in the Top 10 by Data Centre Magazine in 2023. We're looking for an experienced, client‐focused Principal Engineer with mechanical design experience to join our data centre team.

Your previous project experience should demonstrate an ability to transition into our data centre sector. Previous data centre experience is not required, as our DC101 programme will mentor you and provide the skills, context and support to succeed. You'll play a leading role in some of the most high‐profile data centre projects worldwide.

You will drive delivery of regional and integral projects, engage directly with clients, shape technical strategies and review and develop designs. As a Principal,



you'll also support the development of junior engineers and contribute to project planning and fee proposals, helping bring technical expertise to the market and shape the direction of our growing team. Deliver accurate mechanical design solutions including HVAC, air‐conditioning, chilled water, ventilation, equipment selections, public health and building management services systems.

Produce mechanical designs for HVAC and public health and building management services systems. Prepare technical specifications, schedules, calculations, project reports and supporting documentation. Conduct site inspections and surveys to inform design development.

Contribute to internal and external project meetings, providing mechanical expertise and updates. Collaborate with colleagues across regional and international offices on project delivery. Qualified engineer educated to a degree level in Mechanical Engineering, Building Services Engineering or a related technical discipline.

You have experience in a consulting engineering role and are looking for greater responsibility and impact. Previous data centre experience is not required, and our DC101 programme provides in‐depth technical training and support.

📌 Principal Mechanical Critical Systems Engineer (Madrid)
🏢 Cundall
📍 Madrid