Secondary Design Engineer

Job Title: Secondary Design Engineer

Location: Lisbon, Portugal

PURPOSE OF THE ROLE

The Secondary Design Engineer is responsible for the preparation and development of electrical design documentation related to protection and control systems for medium-voltage and high-voltage substations serving data center and industrial clients in the Scandinavian market. The role focuses on the production of detailed electrical schematics, protection and control panel designs, wiring diagrams, and layout drawings using EPLAN and AutoCAD. The position ensures that designs meet technical specifications, engineering standards, and project requirements. The Secondary Design Engineer works closely with the Protection Engineer (for scheme implementation into panel designs), the SCADA/SAS Engineer (for control system documentation), and other engineering disciplines to ensure the accuracy and integration of electrical designs across projects.

KEY RESPONSIBILITIES

Protection & Control Panel Design

• Design protection and control panels for HV and MV substation projects.
• Prepare panel layouts and internal wiring documentation.
• Ensure compliance with project specifications and engineering standards.
• Support panel manufacturing documentation.
• Review technical documentation related to control systems.

Electrical Schematics Development

• Prepare detailed protection and control schematics using EPLAN.
• Develop wiring diagrams and terminal diagrams.
• Maintain drawing revisions and document control.
• Ensure schematic accuracy and consistency with project design.
• Support the preparation of final as-built documentation.

Interlocking & Control Logic

• Design interlocking logic and control sequences for substation equipment.
• Prepare control system documentation and specifications.
• Support control system integration with electrical equipment.
• Participate in system testing activities.

Substation Drawings & Layouts

• Prepare substation layout drawings using AutoCAD.
• Develop cable routing and cable schedule documentation.
• Support integration of electrical equipment layouts within substation designs.
• Coordinate drawings with civil and primary engineering partners.
• Assist in maintaining drawing registers and project documentation.

Engineering Engineering Coordination & Documentation

• Coordinate technical documentation with Protection Engineers and SCADA/SAS Engineers.
• Support interdisciplinary coordination within the engineering team and with external engineering partners.
• Participate in internal design reviews.
• Address engineering comments and design updates.
• Support project documentation updates during construction.
• Prepare and update cable schedules and documentation registers.
• Maintain project drawing databases and revisions.
• Support preparation of as-built documentation packages.

3. Required Qualifications & Competencies

Education:

• Degree in Electrical Engineering or related engineering discipline.

Experience:

• Minimum 5 years of experience in protection and control engineering
• Experience in preparation of electrical schematics and panel design.
• Experience working with EPLAN in protection and control systems.
• Experience with AutoCAD for engineering drawings.
• Experience in substation or electrical infrastructure projects is preferred.

Technical Skills:

• Proficiency in EPLAN and AutoCAD.
• Experience with cable schedules, panel layouts, and control schematics.
• Understanding of protection and control systems for substations.
• Familiarity with PRIMTECH and Revit is considered an advantage.
• Knowledge of IEC standards and engineering documentation practices.
• Experience with IEC 61850 projects is considered a plus. Familiarity with Nordic TSO standards is considered an advantage.

Interpersonal & Communication Skills:

• Excellent verbal and written communication in English (Portuguese is considered a plus)
• Ability to work collaboratively within engineering teams.
• Must be an EU Citizen able to work on-site across Scandinavia.
• Strong organisational and multitasking capabilities.
• Strong analytical and problem-solving capabilities.
• Ability to manage