We are looking for a detail-oriented and proactive Senior Electrical Engineer – ELV to join our Porto office. This role is key in designing and developing high-quality, reliable, and efficient electrical systems for data centers, owning design packages end-to-end and taking technical responsibility for assigned systems.

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.

• Mentor junior and intermediate engineers.

Required Skills:

• Bachelor's degree in Electrical Engineering; Master's preferred.

• Proficient in ETAP, EPLAN, Revit, and DIALux.

• 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.

• Proficiency in English (mandatory); Portuguese and other languages are an advantage.

• 3 to 15 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, and a dynamic, professional, and collaborative work environment in Porto, with a diverse and inclusive team that values innovation and excellence.

About CTS Group:

CTS Group is one of the largest design and build contractors in Europe and the market leader in the Nordic region for data center delivery. With a globally diverse team, group companies, and a strong network of experienced partners, we deliver complex, mission-critical projects across Europe. Joining CTS means becoming part of an international organization at the forefront of data center construction, shaping the future of digital infrastructure.