Black & White Engineering鈥檚 leadership team (Image courtesy of Black & White Engineering)

Homan O鈥橞rien, established in 1990 through the merger of Robert Jacob and Partners (founded in 1955) and Seamus Homan Associates (founded in 1978), specialises in mechanical and electrical engineering design services.

It operates across sectors including data centres, healthcare, education, laboratories, commercial, residential, and industrial facilities.

Mick Cairns, CEO and founder of Black & White Engineering said, 鈥淒ublin鈥檚 strategic role in the global data centre market makes it the ideal location for strengthening ties with our clients, and establishing a regional headquarters in Ireland is a significant step in our growth journey.

鈥淗oman O鈥� Brien鈥檚 strong local presence and specialist expertise align perfectly with our ambitions, and I鈥檓 thrilled to bring such talented people into our global team. It鈥檚 a great fit that unlocks new momentum as we continue to expand internationally.鈥�

Homan O鈥橞rien鈥檚 joint managing director Brian Homan will be retiring from Homan O鈥橞rien on 30 April 2025. He said, 鈥淗aving been in the industry for over 40 years I have taken this opportunity to step back and wish my colleagues at Homan O鈥橞rien all the success in their new venture going forward.鈥�

Black & White Engineering said the two businesses will begin working together immediately, with future plans to scale and expand the team in Ireland to deliver a growing pipeline of regional and international projects.

The acquisition is backed by Waterland, an independent investment group that partnered with Black & White Engineering in 2024 to support its growth strategy. The engineering consultancy has expanded by 500% since 2020.

Black & White Engineering operates across 18 cities worldwide with over 700 employees.