DublinData Centres

Senior Medium Voltage Specialist

Full Time / Permanent / Hybrid

About the job:
As our Senior Medium Voltage Specialist, you will work on some of the largest data centre projects. Your self-starter nature will enable you to confidently work autonomously, with an ability to handle a varied workload, in an agile setting. You will liaise with clients remotely and on-site, offering effective solutions. Leveraging your skills to build and manage complex engineering and construction projects.

About you:

  • Third-level qualification in Engineering

  • 5-years experience, focused on substation, high voltage and medium voltage projects

  • Size, design, and coordinate the implementation of medium voltage solutions

  • Comfortable with conceptualisation and on-site inspections, ensuring the integrity and efficiency of medium voltage installations

  • Seasoned knowledge of medium voltage cabling, switchgear, instrument transformers, protection, metering, and control schemes

  • Ability to produce relevant technical documentation including schematics, calculations, and specifications

  • Working knowledge of MV protection relays

  • Ability to identify and remedy technical problems related to medium voltage systems

Your key day-to-day activities:

  • Sizing and designing medium voltage cabling

  • Designing and specifying medium voltage switchgear

  • Producing Medium Voltage Single Line Diagrams (SLD's), GA Drawings & Specifications

  • Use ETAP to simulate networks and design MV distribution schemes, including protection coordination, cable thermal analysis and Arc flash studies

  • Attending Factory Witness Tests (FWT) and inspecting Medium Voltage installations on site

  • Ensuring the construction team adheres to all contractual requirements


  • Flexible working times

  • 20 Days holidays up to 25 days

  • 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

  • A Professional Subscription Fee paid by the company

  • Heavily subsidised social committee (5 a side, golf society, climbing club and regular social events)

At Ethos, we offer free Fridays every second Friday as a perk! Apply today and take the first step towards a healthier work-life balance!

At Ethos, our vision is to: “Be the company people want to work with, and for

Our values differentiate and focus us every day to be EPIC - for our people and our customers.

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