Jones Engineering Group is a leading International Engineering Contracting Group of companies providing mechanical, electrical, instrumentation, fire protection and maintenance solutions to world class clients. The Group comprises of a number of engineering contracting companies which collectively can deliver the complete range of engineering services.

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We recently celebrated 125 years of engineering and construction excellence. The original company H.A. O’Neil Ltd was founded in 1890. The Group currently employs 2,500 people and has an excess turnover of over €400m per annum. Our objective is the delivery of quality work through quality people. Each of the operating divisions of Jones Engineering is certified to the International Quality standard, IS EN ISO 9001:2008, and accredited with ‘Safe T Certification’.


Latest News

Company Announcement









We are delighted to announce the appointment of Robbie Irvin as Operations Director of Patrick Lynch Ltd, an Electrical Division of Jones Engineering Group


CIF #BuildingEquality Campaign

Meet Eileen Faherty, currently our Lead Electrical Quantity Surveyor and #TeamJones since 1998. Eileen started out with us as an Electrical Apprentice. In this...

Microsoft’s new €134m campus in Dublin

We’re proud to have worked on Microsoft’s new €134m campus in Dublin, One Microsoft Place.

“The building itself has 3,000 seats spread across open-plan floors...