Engineering a sustainable future

Advising and assisting the global community in delivering sustainable infrastructure

Nicholas O’Dwyer is one of the largest engineering and environmental consultancies in Ireland. We provide water, environmental, civil and structural engineering services to a wide range of public and private sector clients around the world.

In addition to our Irish and UK portfolios of work, the company has a strong presence internationally, particularly in Africa, where we have worked since the 1970s and more recently the Middle East, where we deliver large scale infrastructural projects in a sustainable way.

Explore our services

What we can do for you

Nicholas O’Dwyer strive to deliver sustainable solutions that transform communities and bring about lasting positive change. Through a blend of expertise, innovation, and global dedication, we envision a world where sustainable engineering protects growing communities.

We provide professional services in engineering design, project management, environment and planning, construction supervision and technical and contract advisory in multiple sectors.

We are our clients’ consultant of choice because we have a reputation for solving challenges sustainably. Our service delivery is result-focused, based on the direct involvement of senior management, who respond and adhere to client requirements. We engineer innovative solutions, thereby delivering smarter, better and faster outcomes.

Our core values


Hiring, retaining and rewarding talented and dedicated people

Equality, diversity and inclusion

Ensures fair treatment and opportunity for all

Client satisfaction

Building enduring client relationships


Prioritising long-term balance in every project


Redefining boundaries to find smarter, more sustainable solutions

Health & safety

Protecting people who are affected by our projects


Harnessing our deep knowledge to deliver excellence


Building stronger solutions together

Agility & responsiveness

Adapting swiftly to meet the evolving needs of our communities and clients

Social responsibility

Committing to the betterment of our global society

Latest projects

Key sectors

Latest news

River Poddle Flood Scheme Begins…

Company news

NOD Dublin Pride Run 2024

Our people

New Phase of Enniscorthy Regional…

Company news

Success at the recent Irish…

Our people

Nicholas O’Dwyer propels towards a…

Company news

Nicholas O’Dwyer secures project work…

Company news

Life at Nicholas O’Dwyer: In…

Our people

View all news
RSK collage one
RSK collage two
RSK collage three. Decorative
RSK collage four. Decorative.
RSK collage five
RSK collage six

Nicholas O’Dwyer is part of the RSK group of companies

The RSK group is a leading integrated environmental, engineering and technical services business offering bespoke end-to-end solutions to a variety of sectors. Headquartered in the UK but with an established presence throughout Europe, Africa, the Middle East, Asia and Australia, RSK helps organisations around the world achieve their business aspirations in a sustainable and efficient manner.