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The role involves developing detailed ETAP models and performing complex power system analyses to support the design of resilient electrical infrastructure for data centres. You will collaborate with multidisciplinary teams to ensure technical compliance with international standards from concept through to commissioning.
Candidates must hold a degree in Electrical Engineering and have at least one year of experience in power systems engineering, preferably within mission-critical facilities. Proficiency in ETAP or similar software and a strong understanding of European and UK electrical standards are essential.
About the Role
Ethos is seeking a Power Systems Engineer to join our expanding Data Centre Group, supporting the design and delivery of resilient electrical infrastructure for some of the world's most advanced mission-critical facilities.
Working within multidisciplinary engineering teams, you will provide specialist expertise in power system modelling, analysis and electrical network design, ensuring the highest levels of reliability, resilience and operational performance across large-scale data centre developments.
A key aspect of this role is the development of digital power system models using ETAP, undertaking detailed network analysis to inform design decisions from concept through to commissioning. You will work closely with electrical, mechanical, BIM, commissioning and project delivery teams to develop technically robust solutions that comply with international standards and meet demanding client requirements.
Develop detailed ETAP models for complex electrical distribution networks.
Support the design of resilient MV and LV distribution systems for mission-critical facilities.
Develop single line diagrams, network schematics and protection philosophies.
Produce detailed engineering calculations and technical reports.
Review protection settings and coordinate relay philosophies.
Assist with utility interface studies and grid connection assessments.
Review vendor ETAP models and manufacturer data for technical compliance.
Validate electrical equipment ratings against calculated system duties.
Collaborate with BIM teams to ensure coordination between physical layouts and electrical system models.
Support Factory Acceptance Tests (FAT), Site Acceptance Tests (SAT) and energisation planning.
Assist commissioning teams by validating power system performance against ETAP simulations.
Contribute to QA processes by reviewing technical calculations, reports and design deliverables.
Identify opportunities to improve design efficiency through standardisation and digital engineering tools.
Support the development of internal ETAP standards, templates and modelling procedures.
Mentor graduate and junior engineers in power systems analysis and ETAP modelling.
Liaise with clients, utilities, contractors and equipment manufacturers to resolve technical issues throughout project delivery.
Perform electrical power system studies including:
Load flow analysis
IEC 60909 short circuit studies
Protection coordination
Selectivity analysis
Arc flash studies
Harmonic analysis
Motor starting studies
Voltage drop calculations
Equipment duty assessments
Generator performance studies
Contingency and resilience analysis
Desirable Experience
ETAP Certified Professional (or working towards certification).
Experience with DIgSILENT PowerFactory or SKM Power Tools.
Experience of large-scale hyperscale data centre developments.
Knowledge of IEC 61850 and digital substations.
Understanding of grid code requirements and utility connection processes.
Experience with renewable generation, Battery Energy Storage Systems (BESS) or microgrid studies.
Chartered Engineer status or working towards professional registration with Engineers Ireland, IET or an equivalent institution.
About You
Qualifications & Experience
Degree in Electrical Engineering, Power Engineering or a related discipline.
1+ years' experience in electrical or power systems engineering within a building services consultancy, engineering consultancy or industrial environment.
Experience delivering projects within data centres, pharmaceutical, semiconductor, healthcare, industrial or other mission-critical facilities is highly desirable.
Good understanding of European and UK electrical standards including IEC, BS, IS and EN standards.
Strong knowledge of electrical distribution systems from HV through MV and LV.
Power Systems & ETAP Experience
Experience using ETAP (or equivalent software such as DIgSILENT PowerFactory or SKM) for:
Development of complete electrical network models.
Load flow analysis.
IEC 60909 short circuit studies.
Protection coordination and selectivity studies.
Time-current coordination (TCC) development.
Arc flash hazard analysis.
Harmonic analysis.
Motor starting studies.
Voltage drop analysis.
Power quality assessments.
Transient and dynamic system studies.
Contingency and network reliability analysis.
Equipment duty verification.
Generator and UPS performance analysis.
Cable ampacity and derating studies.
Experience creating and maintaining ETAP digital models throughout the project lifecycle, ensuring alignment with design revisions and as-built information, would be highly advantageous.
Technical Expertise
Experience designing or reviewing:
HV, MV and LV distribution systems.
Primary and secondary substations.
Transformers.
Switchgear.
Busbar systems.
Standby generators.
UPS systems (static and rotary).
Battery Energy Storage Systems (BESS) (desirable).
DC power systems.
Emergency power systems.
Earthing and bonding systems.
Lightning protection systems.
Generator synchronisation and load sharing.
Automatic Transfer Switches (ATS).
Static Transfer Switches (STS).
Understanding of:
Data centre power resilience architectures (N, N+1, 2N, 2(N+1), Distributed Redundant).
Utility grid connections.
Fault level management.
Critical power infrastructure.
Operational resilience principles.
Energy efficiency and power system optimisation.
Software
Experience with:
ETAP
AutoCAD.
Revit.
Microsoft Office.
Familiarity with BIM workflows.
Knowledge of Python, MATLAB or scripting for engineering automation would be advantageous.
Why Join us?
At Ethos, we’re dedicated to fostering an environment that encourages both technical excellence and personal wellbeing.
Flexible Fridays and a 9-day fortnight working schedule — enjoy every second Friday off to maintain work–life balance.
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.
Flexible working times
25 Days holidays
Pension Scheme
Working travel out-of-pocket expenses
Travel tax scheme or bike-to-work scheme
Regular training/mentoring / further college support
Support for Chartership
Subsidised Health Insurance Allowance
A Professional Subscription Fee paid by the company
Paid Statutory Leaves
Healthcare check-ups and flu vaccinations
Gym / Fitness membership
Heavily subsidised social committee (5 a side, golf society, climbing club and regular social events)
Company Description:
Ethos is a team of collaborative and creative consultant engineers & professionals, leading data centre and energy infrastructure projects globally.
Our Charter:
We believe in strong human relationships
We believe clear leadership lights the path
We believe sustainability is non-negotiable
We believe a can-do mindset can move mountains
We believe in a relentless focus on delivery
Our Tagline:
Performance Made Possible
Ethos is a group of engineers, consultants and creative thinkers, designing and delivering data centre and energy infrastructure projects across the world's most dynamic markets.
Offices: Floor 5 Bankside, Charlemont St.,, Dublin, D02 VN88, IE · Level One, Liosbán Business Park, Tuam Road, Galway, IE · 44 Southampton Buildings, London, WC2A 1AP, GB
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