O'DORNAN INTERNATIONAL LIMITED

O'DORNAN INTERNATIONAL LIMITED – trading as the Dornan Group – is a leading mechanical, electrical and HVAC engineering and construction firm with a strong European footprint. Drawing on decades of experience, the company delivers complete M&E services for complex, high‑specification projects, ranging from state‑of‑the‑art data‑centres and life‑sciences facilities to industrial plants, commercial estates, infrastructure schemes, health and education buildings, and power‑and‑renewable‑energy installations.

The group’s expertise is evident in landmark projects such as London’s Canary Wharf Station, the Lonza Orca facility in Switzerland, the Lilly IE42 complex in Cork, and the FujiFilm Diosynth site in Denmark. With over 1 000 staff across ten offices – including hubs in Cork, Dublin, London, Amsterdam, Antwerp and Copenhagen – Dornan combines a culture of hard graft and straight‑talking vision to turn intricate engineering challenges into simple, reliable solutions for some of the world’s most admired organisations.