Castlethorn Competitors

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John Sisk & Son Ltd (“Sisk”) is an innovative, international, engineering and construction company. It is a progressive business with long term vision, operating since 1859. Sisk is Ireland’s No1 provider of construction services with extensive operations across Ireland, the United Kingdom and mainland Europe.

Established in 1990, O’Neill & Brennan has firmly cemented its position as a preferred supplier of staff to many of the largest construction contractors in the UK and Ireland. This is because we offer a long standing and trusted brand, utilising over 25 years of industry experience to deliver first class recruitment solutions for our clients. Our industry accreditations, awards and certifications, demonstrates the quality of our work, meaning we have not only the credibility and authority within the market place, but the integrity and competency with which we have been recognised, to deliver a full and comprehensive service to our customers. We specialise in the construction space and currently work with more clients nationally than any other construction recruitment companies. With unprecedented growth, expansion across the UK and Ireland, and significant investment in new, innovative, state-of-the-art systems and software, our desire to be the preferred staffing solutions provider of choice, has never been greater.