Technical Expertise

Multidisciplinary teams comprising of specialists across ten industry sectors, we have the expertise necessary to grapple with challenging assignments.

View all sectors


Commitment to Clients

Our business is built on relationships, and our clients will always be our top priority.

View all Projects

Featured Project

Silvertown Tunnel London UK

Silvertown Tunnel
One of the largest engineering projects in the world.

learn more

Who We Are

International Award-Winning Engineering Consultants who deliver ground breaking solutions at the forefront of industry best practice.

learn more

Our Regions

Carbon Reduction Plan

About - office locations image

Our Commitment to Net Zero
Ayesa is committed to becoming a net zero engineering consultancy by 2040

learn more

Stay Up-to-date

Stay on top of the latest developments, appointments, awards and more across all our offices.

View all News

Featured News

MicrosoftTeams-image (76)

On 19th October 2023, ByrneLooby will rebrand to Ayesa

ByrneLooby will officially adopt the name of its parent company, Ayesa, a global engineering and technology services provider.

Learn more

Investing In Our People

Cultivating a culture in which individual differences and the contributions of our staff are recognised and valued.

meet our people

Our EDI Policy

Careers - Image

Celebrating People
Fostering a culture where you are encouraged to be yourself.

learn more

International Presence

Multidisciplinary team comprising of specialists across Ireland, UK and the Middle East.

Follow us:

  • LinkedIn - blue70px
  • Twitter - blue70px
  • Facebook - blue70px
  • Instagram - blue70px
  • Vimeo - blue70px
  • Issuu - blue70px


Contact Us

We would love to hear from you. Please fill in the quick contact form below.

Send a message

Osberstown WWTP

Osberstown WWTW

Ayesa were appointed by BAM Contractors as their civil engineering consultant to deliver a €12 million upgrade of the existing Waste Water Treatment Plant at Osberstown in Co. Kildare. The upgrade increased the capacity from 80,000PE (Population Equivalent) to 130,000PE and greatly improved the discharge effluent quality.

Osberstown WWTW

Our Role

Our role included the detailed design of all civils work for the upgrade of the main plant and sludge treatment facility. This encompassed 2km of interconnecting pipe work; reinforced concrete design of inlet works and distribution chambers, 17,000m3 of combined anaerobic/anoxic reactor and storm water tank structure, primary and final sedimentation tanks, sludge digestion chambers, tertiary treatment chambers and associated process buildings including refurbishment and repairs to existing buildings for new process equipment.

Our Role

We support your projects

Our goal is to provide you with the best services for your needs