Dornan Group is a leading mechanical, electrical, and HVAC engineering and construction company renowned for its exceptional projects across various sectors in Europe. Overcoming the hurdles presented by the Covid-19 pandemic, Dornan has experienced a remarkable recovery, with 95% of projected turnover for 2023 already secured.

Micheál O’Connor, Managing Director, Dornan Group.

The company’s primary focus lies in the data centre, life science and commercial sectors, which have shown significant growth across Europe.

Dornan’s investments in advanced integrated systems have seamlessly bridged the gap between locations, enabling real-time communication and immediate access to critical data, resulting in improved operations and successful project delivery. Examples include Dornan’s in-house capability of using animation to demonstrate timeline and construction sequence on projects, 4D capability and 360 walkthroughs.

Total Turnover:


ROI Turnover:


International Turnover:


Safety at Dornan

At the core of Dornan’s operations lies a firm commitment to safety. Its exceptional teams, comprising talented and diligent professionals, consistently go above and beyond to uphold the highest safety standards in every project. Its Project NorthStar won a Merit Award at the 2023 International Safety Awards. Speaking about the awards, Micheál O’Connor, Managing Director, Dornan Group, commented, “We are thrilled that Project NorthStar has been honoured with a prestigious Merit Award at the 2023 International Safety Awards. This achievement reflects our unwavering commitment to prioritising safety and ensuring the wellbeing of our colleagues. The merit award not only acknowledges Dornan’s dedication but also highlights our industry-leading efforts in maintaining a safe and secure working environment for team members.”

Inspiring future engineers and construction professionals

Committed to inspiring future generations, Dornan operates a STEM initiative that offers valuable learning experiences focused on engineering and construction, exposing students to real-world career opportunities. Additionally, Dornan is active in promoting gender diversity in the construction industry. The Woman@Dornan Network, established in 2021, celebrates the remarkable contributions of women in engineering and construction, showcasing role models and empowering others.

Dornan places its greatest hope in the next generation, envisioning its ability to innovate sustainable solutions and shape a greener world for all.

A ‘Great Place to Work’

Dornan also has been recognised as a ‘Great Place to Work’ and among Ireland’s Best Employers, showcasing its commitment to fostering an exceptional work environment where team members can thrive. Furthermore, Dornan’s UK team achieved the prestigious GOLD accreditation in the ‘Investors in Wellbeing’ section by IIP. Dornan is delighted to have received these accolades, which recognise its commitment to excellence in people management, leadership and continuous improvement.

Project Northstar.
Dornan Group team after receiving the Merit Award for leadership, and continuous improvement at the 2023 International Safety Awards.

No 3: Dornan Group

ADDRESS: 10 Eastgate Avenue, Eastgate, Little Island, Cork.

PHONE: 021 233 0900


LINKEDIN: Dornan Engineering Ltd

TWITTER: @TheDornanGroup

KEY EXECUTIVES: Brian Acheson, Chief Executive Officer; Micheál O’ Connor, Managing Director; Joe Conway, Head of Business Development, Ireland.

KEY ACTIVITIES: Mechanical, HVAC & Electrical Installation.

YEAR-END: 31/12/2022