Power Systems Engineer (Data Centres)Data Centres·Dublin·Hybrid

About the role:

The Power Systems Engineer will play a key role within Ethos Engineering’s Data Centre Group, supporting the design and delivery of resilient electrical power infrastructure for mission-critical facilities. The role focuses on power systems analysis and MV/LV distribution design within a building services consultancy environment, working closely with electrical, mechanical, BIM and commissioning teams.

 About you:

• Degree in Electrical Engineering or Power Engineering.

• 1+ years’ experience in electrical or power systems engineering, ideally within a building services or consultancy environment.

• Experience working on data centre, pharmaceutical, life sciences or other mission-critical facilities is highly desirable.

• Familiarity with European and UK electrical standards (IEC, BS, IS).

• Strong understanding of electrical power systems within building services and mission-critical environments.

• Experience delivering power system studies such as:

  • Short circuit calculations (IEC 60909)

  • Load flow analysis (HV / MV / LV)

  • Protection coordination and selectivity studies

  • Arc flash and power quality studies

  • Harmonic and transient analysis

• Experience with MV and LV system design, including transformers, switchgear, generators, UPS (AC/DC) and emergency power systems.

• Familiarity with earthing and lightning protection design for complex facilities.

• Working knowledge of AutoCAD and Revit within a building services design environment.

• Understanding of data centre power resilience concepts (N, N+1, 2N architectures).

About the job:

• Act as a power systems specialist within multidisciplinary building services design teams on data centre projects.

• Undertake electrical power system studies to support data centre design, including load flow, short circuit, protection coordination, arc flash and harmonic analysis.

• Support the design of MV and LV distribution systems for data centres, including substations, transformers, generators, UPS systems and critical power architectures.

• Develop and review single line diagrams, power system schematics, protection philosophies and technical reports.

• Carry out detailed electrical calculations in accordance with IEC, BS, IS and relevant international standards.

• Interface with utility providers and support grid connection assessments for data centre developments.

• Review vendor and contractor technical submissions, ensuring alignment with the design intent and performance requirements.

• Support commissioning activities, including FATs, SATs and system energisation planning where required.

• Contribute to QA processes, ensuring technical accuracy, compliance and consistency across project deliverables.

• Provide technical support and mentoring to junior electrical engineers within the team.

• Liaise with clients, contractors and other stakeholders to resolve technical challenges during design and construction.

Soft Skills & Team Fit

• Strong analytical mindset with excellent attention to detail.

• Confident communicator, able to explain complex power system concepts to both technical and non-technical stakeholders.

• Comfortable working as part of multidisciplinary design teams in a fast-paced consultancy environment.

• Proactive approach to problem-solving and continuous improvement.

Why Join Us?

At Ethos, we’re dedicated to fostering an environment that encourages both technical excellence and personal wellbeing. As a Power Systems Engineer, you’ll be part of a highly skilled, collaborative team that leverages innovation and simulation to shape more sustainable and efficient designs across diverse projects.

We offer:

• Flexible Fridays and a 9-day fortnight working schedule — enjoy every second Friday off to maintain work–life balance.

• A state-of-the-art office in Charlemont, Dublin 2, designed to promote collaboration, innovation, and wellbeing.

• A culture that values flexibility, learning, and teamwork, with clear progression pathways and support toward professional accreditation.

• Opportunities to work alongside some of the most experienced engineers in the industry, within a forward-thinking, technology-driven consultancy.