About CTS Group
CTS Group is a fast-growing international design and build company specializing in data center development across Europe, the Middle East and Africa (EMEA). With over 40 nationalities across its teams, CTS has a collaborative, high-performance culture where innovation and technical precision drive every project.
The Opportunity
We're hiring Mechanical Engineers at three levels to design, coordinate and deliver cooling systems and mechanical packages for mission-critical data center facilities.
What You'll Work On (all levels)
- Designing cooling system components and mechanical packages from concept through IFC and as-built stages
- Selecting, sizing and integrating cooling equipment such as chillers, CRAHs, CDUs, pumps and heat rejection systems
- Making sure designs comply with codes, standards and client technical requirements
- Coordinating with electrical, structural, architectural and special package teams
- Supporting fast-track delivery, constructability reviews, commissioning and handover
- Answering RFIs and supporting site teams during construction
What We're Looking For (all levels)
- Bachelor's or Master's degree in Mechanical, Electrical or Industrial Engineering
- Experience in mission-critical or industrial environments
- Knowledge of critical cooling systems (CRAH/CRAC, chillers, liquid cooling, heat exchangers, pumps) and HVAC design for mission-critical cooling
- Proficiency in AutoCAD and Revit
- Understanding of redundancy concepts (N+1, 2N), resilience and uptime requirements
- Strong attention to detail and the ability to perform in fast-paced, high-complexity environments
Junior Mechanical Engineer (3–5 years)
- Supports design, documentation and coordination under the guidance of senior engineers
- Prepares drawings and design packages for senior review and sign-off
- Has a basic understanding of high-density and liquid-cooled data center environments
- Is eager to learn and grow in the data center sector
Intermediate Mechanical Engineer (5–10 years)
- Delivers designs with limited oversight and a moderate degree of independence
- Leads equipment selection and sizing, and coordinates directly with other disciplines
- Reviews and prepares mechanical design packages within their assigned scope
- Has working experience with DCIM tools and interface coordination
Senior Mechanical Engineer (10+ years)
- Owns end-to-end design and provides technical leadership across multiple projects
- Resolves complex compliance issues, handles complex RFIs and drives risk mitigation
- Finalizes and releases mechanical design packages
- Mentors junior and intermediate engineers
- Has deep expertise in mission-critical cooling, advanced DCIM experience and strong stakeholder management skills
What We Offer
- A career-building role with one of Europe's fastest-growing data center companies
- Direct collaboration with global colleagues
- Competitive compensation and health insurance
- A dynamic, innovation-focused environment in Lisbon/Porto
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