Founded in 2015 by co-directors Alana Hayes and Seanie Hayes, Hayes Mechanical & Engineering Ltd is a leading mechanical engineering and structural steel contractor delivering high-quality solutions across Ireland, the UK, and mainland Europe. Headquartered in Ballintubber, Co. Mayo, the company has grown into a trusted delivery partner for complex projects within the data centre, pharmaceutical, healthcare, commercial, infrastructure, and water/wastewater sectors.

Hayes Mechanical & Engineering specialises in mechanical services installation, high-purity and process pipework, prefabricated modular systems, and structural steel fabrication and installation. Operating from modern fabrication facilities with dedicated carbon and stainless-steel workshops, the company delivers projects to the highest international quality and safety standards, including EN1090 Execution Class 3, ISO 9001, ISO 14001, and ISO 45001 accreditation.

The company has successfully delivered and supported major projects throughout Ireland and internationally, including large-scale data centre developments in Ireland, London, and Frankfurt, critical infrastructure upgrades within the water and wastewater industry, pharmaceutical manufacturing facilities, airport infrastructure works, and power generation projects. Hayes Mechanical has also supported European projects through off-site fabrication and installation services across multiple jurisdictions.

With an established operational presence in Ireland, the UK, and Germany, the company continues to expand its international footprint and export capability. Hayes Mechanical’s reputation has been built on technical expertise, fast-track project delivery, strong client relationships, and the ability to mobilise skilled teams across multiple regions.

The business employs a highly skilled and multicultural workforce and remains committed to continuous improvement, digital innovation, apprenticeships, and sustainable growth. Through ongoing investment in modern construction technologies, cloud-based project delivery systems, quality assurance, and employee development, Hayes Mechanical is strategically positioned for long-term expansion within the European construction and engineering market.

Why work with us

• Established delivery across Ireland, the UK and Germany with proven experience on complex data centre, pharmaceutical, healthcare, airport and water/wastewater infrastructure projects.
• Fully integrated mechanical and structural steel capabilities, allowing clients to streamline delivery through a single trusted contractor.
• Strong reputation for quality, safety and compliance, operating to EN1090 Execution Class 3, ISO 9001, ISO 14001 and ISO 45001 standards.
• Modern fabrication facilities with dedicated carbon and stainless-steel workshops, ensuring high-quality controlled manufacturing and full traceability.
• Experienced in fast-track and live-environment projects where programme certainty, coordination and responsiveness are critical.
• Investment in digital construction technologies including Autodesk Construction Cloud to improve project visibility, quality assurance and communication.
• Highly skilled and multicultural workforce with a strong focus on training, apprenticeships and employee development.
• Proven ability to scale and mobilise teams across multiple regions while maintaining consistent quality and client communication.
• Collaborative and hands-on management approach, building long-term relationships through reliability, transparency and delivery performance.
• Award-winning contractor recognised within the industry for excellence in project delivery and engineering standards.