Founded In 1931

Ryan Hanley is a leading Engineering and Environmental Consultancy.

With offices in Dublin, Galway, Cork and Castlebar, we currently employ over 150 personnel, including Engineers, Engineering Technicians, Environmental Scientists, Ecologists, Quantity Surveyors, Software Developers and Administrative Staff.

Our Clients include Local Authorities, Government Departments, Semi-State and State Agencies and Private National & Multinational Clients, Uisce Éireann, OPW, EY, Enterprise Ireland, Údarás na Gaeltachta, EPA.

Ryan Hanley is driven by the needs and requirements of our Clients and it is the company’s belief that an innovative, enquiring approach best serves our Clients needs.

We are trusted Consulting Engineers specialising in Water, Wastewater, Flood Risk Management, Structural Engineering, Environmental Planning and Ecology.

Our vision

‘Delivering sustainable engineering solutions for a more environmentally friendly future’


We are driven by, and will operate our business under, our Core Values of:


Knowing and doing what is right

Respect & Inclusion

Treating others the way you want to be treated


Striving for continuous improvement & innovation


Caring about our work and taking pride in what we do

Health, Safety & Wellbeing

Valuing a safe and healthy workplace. Creating a positive workspace and building strong relationships.


Our Pledge to Net Zero.