Engineering a sustainable future

Part of RSK Group, with more than 15,000 professionals around the globe

Founded in 1932, Nicholas O’Dwyer delivers sustainable engineering infrastructure for its clients. Headquartered in Ireland, we have a global reach with a proven track record in professional excellence.

Who we are

At Nicholas O’Dwyer, we strive to craft innovative engineering solutions that uplift communities and protect the environment. We value our people and promote their training and development as professionals in an equal, diverse and inclusive environment.

We are the consultant of choice for our clients, delivering high-quality, high-value projects to meet society’s needs for critical infrastructure in a sustainable and innovative way. Our leaders engage directly with our clients, so access to key decision-makers forms part of our service offering. We use the latest advances in digital technology to ensure the most efficient solutions are delivered for our clients.

Meet the team

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

Equality, diversity and inclusion

We are proud to be among a select number of Irish companies that have achieved the Investors in Diversity Silver accreditation for equality, diversity and inclusion (EDI) from the Irish Centre for Diversity. We are actively working towards gaining Gold accreditation, which will reflect our leadership position in our field in promoting the benefits of EDI.

We have over 50 different nationalities and cultures working at Nicholas O’Dwyer and this diversity brings many benefits including

  • an inclusive company culture, thereby retaining and developing our valued employees
  • increased creativity and problem-solving from a diverse team of people with different backgrounds, experiences, skills, personalities and thinking-styles
  • a wider global talent pool available
  • being an ambassador in our industry as a forward-thinking and inclusive employer, leading the way for our counterparts.

We actively promote equality and diversity in our workforce to ensure that individuals are treated fairly. As a company, we recognise that every employee has a basic right to enjoy a working environment that promotes dignity and respect and recognises and values equally, the differences and contributions among employees.


Sustainability is a core Nicholas O’Dwyer value, enabling the company to work towards a sustainable planet. Our teams are dedicated to sustainable design and the delivery of critical infrastructure projects aligned closely with the UN Sustainable Development Goals and UNSDG6 ‘Clean Water and Sanitation’ in particular. We have baselined our carbon footprint and committed to a 30% reduction by 2030.

As an RSK company, our sustainability strategy is driven by the group’s five pillars of sustainability and outlines performance objectives against them. These pillars include the environment and communities, our people and ethics, our clients and suppliers, our financial and governance and our safety, health and quality.

We work with our clients to embed designs using risk-based approaches to adapt investment to climate change and mitigate and reduce carbon use.

Innovation and technology

Advances in technology and the digital world enable quicker, smarter and more sustainable working practices. We have embraced the use of smart technology on our projects thus reducing our carbon footprint and having greater remote accessibility and operational efficiency.

Through our innovation and technology group, we promote the adoption of new ideas and better ways of working and have formed strong links with third-level institutions to research our ideas further.

Our history

Founded in 1932, Nicholas O’Dwyer has been an innovator from its inception. Before establishing the company, our eponymous founder was chief engineering inspector in the Department of Local Government, a position he held since the Irish state’s foundation in 1922. He represented Ireland on a League of Nations Committee on public health engineering and acted on the League’s European advisory committee on rural hygiene. Highly active professionally, Nicholas served as president of the Institution of Engineers of Ireland from 1934 to 1936.

During the 1950s and 1960s, Nicholas O’Dwyer designed much of Ireland’s water services infrastructure, and brought that technical expertise when the business expanded into the global arena.

We started operating in Africa in the 1960s and our first projects included overseeing the Lusaka (Zambia) Water Supply Scheme. Since then, we have worked in many countries across the African Continent. Our international business continues to be a pioneer in the developing world, and we are constantly reinventing ourselves to take account of new opportunities that arise including our latest expansion into the middle east and far east markets. It is this readiness to constantly look to the next chapter that helps us to future-proof the company against the challenges that may occur in any or all our more traditional markets.

Our accreditations

RSK collage one
RSK collage two
RSK collage three. Decorative
RSK collage four. Decorative.
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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.