⚙️ Ready to design and engineer mission-critical systems for a major Data Center project?

CTS Group is a fast-growing and dynamic company, specializing in the design and build of large-scale Data Centers across multiple countries, including Scandinavia, Europe, and the Middle East. We are rapidly expanding into other markets globally. In addition to D&B, we develop and produce digital systems tailored for the Data Center industry and standardized self-contained units.

We’re looking for an Mechanical Design Engineer to join our Mechanical Engineering team in Lisbon/Porto.

What will you be doing?

You’ll take ownership of mechanical and HVAC design solutions throughout the project lifecycle. Your key responsibilities will include:

⚙️ Sizing air conditioning, ventilation, pump, pipe, fan, and duct systems

📊 Developing Thermal Load calculations using tools like IES, HAP, or Trace

📐 Creating P&ID and PFD diagrams using AutoCAD and Revit

🏢 Selecting specialist equipment including Chillers, Fan Coils, CRAHs, and AHUs

✍️ Producing complete system designs from scratch based on technical requirements and starting points

📚 Writing comprehensive technical specifications, reports, and documentation

📋 Checking designs for compliance with project specifications, contracts, industry standards, and local/international codes

🔗 Managing technical interfaces between mechanical systems and electrical, fire safety, structural, and acoustic requirements

🤝 Working alongside other design and engineering professionals to refine concept designs

💡 Proposing proactive initiatives aimed at improving cost, quality, schedule, and design consistency

💼 Providing key technical support during the BID process.

What are we looking for?

Your technical and professional background:

🎓 Bachelor's or Master's degree in Mechanical Engineering Experience level

• Experience (multiple levels) in electrical design or related engineering functions:

• Junior: Minimum 3 years of experience

• Intermediate: Minimum 5 years of experience

• Senior: Minimum 8 years of experience, including 2+ years of direct experience with Data Centres or comparable mission-critical infrastructure

• Solid background in HVAC design (Heating, Ventilation, Air-Conditioning) for industry, office buildings, clean rooms, or Data Centres Extensive knowledge of cooling technologies, air handling/treatment installations, and supporting mechanical systems (piping, pumps, ducts, fans)

• Familiarity with Data Centre international and local standards (e.g., ASHRAE, Uptime Institute, TIA, EN50600)

• Proficiency in design software (AutoCAD, Revit) and calculation software (IES, HAP, Trace)

• 🇬🇧 Advanced English proficiency — mandatory

• 📍 Availability to work on-site

This role requires strong analytical precision and collaborative execution. You’ll fit well into this role if you:

🧠 Possess exceptional attention to detail and hold your work to high-quality standards

👥 Have excellent teamwork skills and maintain a positive, proactive attitude

🤝 Effectively communicate design standards to both internal and external project partners

📅 Demonstrate great organizational skills with the ability to prioritize tasks and hit project deadlines

🚀 Understand the broader acoustic, spatial, and structural impact of mechanical systems on building layouts.

What we offer

💰 Competitive salary package aligned with your professional experience

🏥 Health insurance

📈 Professional growth and development opportunities

🎓 Continuous training and learning

🌍 An international, diverse and inclusive environment

🤝 A dynamic and collaborative team focused on innovation and excellence.

📍 Location

Lisbon or Porto, Portugal — 100% On-site

Ready to lead what comes next? If you’re a skilled Mechanical Engineer looking for the opportunity to design cutting-edge mechanical systems within an international Data Center environment, we’d like to hear from you.

Join CTS Group and help deliver the infrastructure powering the next generation of Data Centers