About Jennings O'Donovan
Part of the RSK Group, with More than 200 Companies Around the Globe
Established in Sligo in 1950, Jennings O’Donovan is a multidisciplinary consulting engineering firm operating across a wide range of engineering sector. Celebrating 75 years of excellence, we combine deep Irish roots with a powerful global network to deliver sustainable engineering solutions.
Who We Are
Through our highly qualified team of design engineers, project managers and environmental scientists, we can deliver projects from inception through feasibility, planning, design, procurement and construction to handover and project close out.
If you need a consulting engineer with specialist expertise in civil, structural and environmental engineering and with strong project management skills, then at Jennings O’Donovan you will find a responsive, understanding and committed professional advisor.
Our Mission
“To actively target engineering and scientific work that is environmentally responsible and to be leading experts in these fields.”
To grow sales by entering new markets and by strategic linkages. To be customer focused and deliver quality work in a professional and efficient manner which reflects and values the efforts of our teams. To be profitable across the full realm of our activities.
Through our highly qualified team of design engineers, project managers and environmental scientists, we can deliver projects from inception through feasibility, planning, design, procurement and construction to handover and project close out.
If you need a consulting engineer with specialist expertise in civil, structural and environmental engineering and with strong project management skills, then at Jennings O’Donovan you will find a responsive, understanding and committed professional advisor.
Jennings O'Donovan Management
Leadership Rooted in Excellence.
Through our highly qualified team of design engineers, project managers, and environmental scientists, Jennings O’Donovan delivers complex projects from initial inception through to handover and project close-out. Our management team is defined by a responsive, understanding, and committed approach, acting as a trusted professional advisor to clients across civil, structural, and environmental disciplines.
As part of the RSK Group, we combine this deep Irish heritage with the reach of a leading global integrated technical services business to achieve our clients’ aspirations sustainably.
Our History
Established in 1950, Jennings O’Donovan & Partners has evolved from a pioneering regional engineering practice into a leading international multidisciplinary consultancy at the forefront of sustainable infrastructure. Headquartered in Sligo, Ireland, our journey began with a commitment to local civil and water projects before expanding our footprint across Europe, the Middle East, and beyond.
Over the decades, we have become a cornerstone of the renewable energy sector, delivering over 3,000 MW of wind energy and specialised storage solutions that drive the global transition to net zero. In 2023, we entered a new chapter by joining the RSK Group, a global leader in sustainable solutions, allowing us to combine our 75-year legacy of technical excellence with expanded resources to solve the complex climate and engineering challenges of 2026 and the future.
Jennings O'Donovan is part of the RSK Group
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.
Our Accreditations & Affiliations
Sustainability
Jennings O’Donovan is committed to taking a leadership role in the transition to a Net Zero carbon economy through socially and environmentally responsible engineering. Our mission is to actively target engineering and scientific work that is environmentally responsible, ensuring that true long-term costs and benefits are considered across entire project lifecycles to address the urgent climate emergency. As a proud signatory of the ‘Pledge to Net Zero,’ we have established a clear 2030 Sustainability Strategy Action Plan that aligns our operations with global science-based targets and sustainable development goals.
Quality Management System
Jennings O’Donovan operates a completely Integrated Management System (IMS) founded on the latest international standards. This ensures that our high-level management systems are consistently applied across every project lifecycle.
As part of our commitment to excellence, JOD undergoes regular external audits to verify full compliance with:
ISO 9001:2015 – Quality Management System
ISO 14001:2015 – Environmental Management System
ISO 45001:2018 – Occupational Health and Safety Management System
Jennings O’Donovan is fully certified and accredited in these areas for the provision of project management, environmental, civil, and structural consulting engineering services.