Electrical Design Engineer in Porto

We are looking for a detail-oriented and proactive Senior Electrical Engineer – LV 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 and Experience 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).

Advanced proficiency across Auto CAD Electrical, Revit MEP, Navisworks, and ETAP, Simaris (Siemens), Ecodial (Schneider Electric), or SKM Power Tools for protection/coordination and arc flash studies.

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. 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, 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 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.