About CTS Group
CTS Group SA 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. CTS Group is 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. Our team of professionals, representing more than 40 different nationalities, fosters an inclusive and collaborative culture where innovation and excellence are at the heart of everything we do. Through our projects, we have built a strong reputation as a trusted partner in delivering some of the most advanced, efficient, and sustainable Data Center solutions in the region.

About the Role
We are looking for a detail-oriented and proactive Senior Electrical Engineer to join our Porto office. This role is key in designing and developing high-quality, reliable, and efficient electrical systems for Data Centers.

Key Responsibilities

• Own and lead the design and development of electrical systems for Data Centers (power distribution, grounding, lighting, standby power) end-to-end.
• Independently create and manage single-line diagrams, electrical schematics, and panel schedules using EPLAN and Revit.
• Perform power system analysis (short circuit, load flow, arc flash, protection coordination) using ETAP, taking technical responsibility for assigned systems.
• Develop and validate lighting and emergency lighting designs using DIALux.
• Lead coordination with multidisciplinary teams (mechanical, civil, architectural) to ensure seamless integration of electrical systems.
• Lead peer design reviews and review junior engineers' output, ensuring compliance with international standards (IEC, IEEE, NEC, NFPA 70E).
• Prepare and finalize detailed design documentation, specifications, and Bills of Quantities (BOQs).
• Manage direct client and vendor interaction on technical matters, and respond to RFIs during construction phases.
• Ensure compliance with local electrical codes and global data center design standards.

Required Skills and Experience

• Bachelor's degree in Electrical Engineering.
• Preferably proficient in or familiar with: ETAP (power systems modeling and analysis), EPLAN (electrical schematics and control panel design), Revit (BIM modeling and coordination), DIALux (lighting simulation and design).
• Strong knowledge of electrical codes and standards (NEC, IEC, IEEE, NFPA 70E).
• Familiarity with Tier classifications (Uptime Institute) and redundancy concepts (N, N+1, 2N).
• Experience in mission-critical environments (data centers, telecom, hospitals, etc.).
• Exposure to HV/MV substations, switchgear layouts, and BMS integration.
• Knowledge of digital twin concepts or energy monitoring systems is a plus.
• Excellent problem-solving, communication, and teamwork skills.
• Ability to manage multiple projects under tight deadlines.
• Proficiency in English (mandatory); other languages are an advantage.

Minimum Experience and Scope

• 5–10 years of electrical engineering experience, including exposure to data center or mission-critical infrastructure design.
• Owns design packages end-to-end and takes technical responsibility for assigned systems.
• Leads coordination with other disciplines and reviews junior engineers' output.
• Confident, independent use of ETAP, EPLAN, Revit, and DIALux.
• Direct client and vendor interaction on technical matters.

What We Offer

• Competitive salary package aligned with your professional experience.
• Health Insurance.
• Opportunity for professional growth and development.
• Continuous training and learning opportunities.

• A dynamic, professional, and collaborative work environment in Porto, with a diverse and inclusive team that values innovation and excellence.
  
  
  
  If you have the profile we’re looking for, apply for the opportunity to join an excellent team and contribute to the success of a fast-growing international company.