At Dornan, we deliver complex Mechanical, Electrical, HVAC, CSA and Instrumentation solutions on projects across Europe and the UK. From Life Sciences and Data Centres to Advanced Manufacturing, our people bring technical expertise to every build.
Our growth and reputation speak for themselves:
At Dornan, we champion diversity and welcome people from all walks of life into our workforce. We employ a diverse range of professionals and craft specialists, from emerging talent to experienced technical leaders.
Our culture is built on:
Whether you’re just starting out or bringing years of experience, Dornan offers structured opportunities for development.
You’ll have access to:
Dornan operates as part of a global construction and engineering network that provides scale, stability and opportunity.
Turner Construction, one of the largest construction companies in the United States, is a subsidiary of ACS Group (Actividades de Construcción y Servicios), one of the world's leading infrastructure companies. ACS Group's global network includes Hochtief, Cimic Group, Dragados, and Flatiron Dragados. Through this structure, Dornan is connected to an international organisation delivering projects across Europe and beyond.
What this means for you:
Being part of the ACS Group strengthens Dornan’s ability to invest in its people, deliver at scale and offer broader career pathways, while remaining focused on engineering excellence and project delivery.
Dornan began delivering engineering services to the pharmaceutical sector in Ireland. From the outset, the focus was on quality, reliability, and building trusted client relationships. We are proud of our heritage, growing from a Cork-based firm into a trusted international partner, strengthened by our recent integration with Turner Construction.
Dornan & Co. Established
Dornan & Co. began delivering engineering services to the pharmaceutical sector in Ireland. From the outset, the focus was on quality, reliability, and building trusted client relationships. Principles that still define how Dornan works to day.
Acquired by The Kentech Group
Dornan Engineering Ltd. was acquired by The Kentech Group, supporting continued growth and strengthening our position within the pharmaceutical sector.
Management Buy-Out
A management buy-out led by Brian Acheson, Oliver Lonergan and Christopher McGovern marked a significant turning point for the business. This transition set a clear direction for long-term sustainable growth.
UK Office Opened | First Project in Sweden
Dornan opened it’s UK office and successfully delivered its first project in Sweden, signalling the beginning of our expansion across the UK and mainland Europe.
European Expansion | €104 million Turnover
Dornan entered the Data Centre sector, delivering projects for multinational technology clients across Europe.
Continued Growth | €485 million Turnover
By 2020, Dornan had delivered over 500MW of Data Centre projects across Ireland, the UK, and Europe. This milestone reflected our ability to consistently deliver large complex projects for global clients
Major Data Centre Projects Across Europe
Dornan continued to expand its Data Centre portfolio, working with leading global technology companies on major projects across multiple European locations.
First Hyperscale Data Centre Completed as General Contractor
Dornan successfully completed its first hyperscale Data Centre project as General Contractor in Europe, broadening our delivery capability and strengthening our end-to-end offering.
Acquired by Turner Construction
Dornan became part of Turner Construction, a subsidiary of Hochtief and the wider ACS Group. This milestone expanded our global reach, strengthened collaboration across the group, and created new development opportunities for our people.
Sign up now and receive an email when we have a role we think you might be interested in!
This website uses cookies.
This website uses cookies. We use cookies to personalise content such as job recommendations, and to analyse our traffic. You consent to our cookies if you click "I Accept". If you click on "I Do Not Accept", then we will not use cookies but you may have a deteriorated user experience. You can change your settings by clicking on the Settings link on the top right of the device
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. If you do not allow these cookie we will not know when you have visited our site, and will not be able to monitor its performance.