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Early engagement with us on large scale projects is a key element for success

Since our first forays into the Data Centre/ICT sector in the early 1980s, John Sisk & Son has had a continued, proven track record in delivering high-end, mission critical projects for domestic and multinational micro-electronics, data and ICT clients across Ireland and the UK.

Our commitment to delivering excellence and innovation has led us to a business model that is built on strong, long-lasting relationships where 70 per cent of our business stems from existing clients.


Multinational Data Centre, Dublin

Data Centre, Northern Sweden

Data Centre, Southern Sweden

Hewlett Packard

document cover

Irish Building Magazine December 2022

Donal McCarthy, COO, Sisk interview

Tánaiste Leo Varadkar visits Sisk data centre project in Denmark


AEC Autodesk Awards 2022

Innovator of the Year - LLA03 Data Centre

Sisk is implementing its DPD strategy from site mobilisation right through to final handover on all of its data centre projects

Other Data Centre / ICT Case Studies

Worldport, Dublin

IBM Data Suite 1: IBM Technology, Dublin

IBM Data Suite 2: IBM Technology, Dublin

Data Electronics, Dublin, Ireland


ACI Data Centre, Limerick

Dell, Limerick, Ireland

Contact us and see how we can work together

Image of Donal McCarthy
Donal McCarthy

Chief Operating Officer (COO) Data Centres, Life Sciences & Technology

Donal is Chief Operating Officer (COO) Data Centres, Life Sciences & Technology. Donal has held numerous senior positions since re-joining the company in 2002 following an eight-year period working in the construction industry in New York. Prior to that he worked as a graduate engineer with Sisk, having joined the company in 1990.

Image of Owen Sisk
Owen Sisk

Managing Director, Data Centres

Owen is one of the fifth generation of the Sisk family. In 2009 he commenced our first civil engineering project in the UK and managed much of our civils work across the UK including a number of the London 2012 Olympics projects, one of the UK’s largest onshore windfarms and other infrastructure projects. 

He has led a group-wide business transformation programme over recent years and was appointed to the European business in 2019 as Regional Director, working primarily in Life Sciences. In 2022 Owen became Managing Director for Data Centres. 

Image of Vincent McCarthy
Vincent McCarthy

Pre-Construction Director - Data Centres, Life Science and Technology

Vincent began his career with John Sisk & Son in 1992 as a Quantity Surveyor. In 1996 he was appointed Senior Quantity Surveyor. In 2022, Vincent became Pre-Construction Director - Data Centres, Life Science and Technology.