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
Mechanical Design Engineer • Porto, Porto, Portugal
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