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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

bet365 corporate office, Stoke-on-Trent, UK

bet365, Stoke-on-Trent, UK

Data Centre, Southern Sweden

Hewlett Packard

€2 billion in mission critical facilities delivered since 2000

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 Diarmuid O'Sullivan
Diarmuid O'Sullivan

Director- Data/ICT, Ireland & Europe

Diarmuid has over 28 years experience working with Sisk and is currently responsible for delivering mission critical Data Centre projects from pre-construction stage through to final commissioning and handover for large multinational clients.