About the Company At Nicholas O'Dwyer, sustainability is at the core of our work. If you are looking to advance your career in a socially responsible company, which has a proven track record over 90 years, and is committed to creating a sustainable planet, we invite you to be part of our team. Our mission is to provide innovative and reliable solutions using cutting edge technology and expertise, to ensure project success and employee satisfaction. We deliver infrastructure projects in water, wastewater, transportation, civil and structural engineering, flood protection, and energy including renewables. With headquarters in Ireland, we also operate in the UK, Europe, the Middle East, and Africa. As part of the RSK Group, an amalgamation of over 200 companies with more than 17,000 employees, we benefit from a global network of opportunities while retaining our brand and autonomy. About the Role Nicholas O’Dwyer is seeking an experienced Senior Catchment Scientist / Hydrogeologist to support in the delivery of the Drinking Water Safety Plan (DWSP) programme, in line with the requirements of the new Drinking Water Regulations. The role will focus on the development of high-level Catchment Action Plans for approximately 700 Water Treatment Plant catchments, encompassing both surface water and groundwater sources. The successful candidate will work collaboratively with internal technical teams and external stakeholders to identify risks, define mitigation measures, and track actions through the DWSP system. This is a senior, technically focused role requiring strong catchment science expertise, excellent analytical and reporting skills, and proven experience working within regulated drinking water environments. Key Duties and Responsibilities Lead the preparation of high-level Catchment Action Plans for drinking water sources as part of the DWSP programme. Undertake desktop catchment characterisation, including review of source risk assessment outputs and available water quality data. Analyse and interpret water quality monitoring datasets to identify key pressures, hazards, and trends affecting drinking water sources. Identify, prioritise, and plan risk mitigation measures, including defining responsibilities, sequencing, and realistic implementation timelines. Engage with internal and external stakeholders, including asset owners, regulators, and catchment partners, to support delivery of agreed actions. Track and update mitigation measures within the DWSP database, ensuring accuracy and consistency of records. Provide technical oversight and review of catchment and hydrogeological inputs prepared by other team members. Support programme and project management activities, including progress tracking, reporting, and coordination across multiple catchments. Prepare high-quality technical reports, summaries, and presentations suitable for both technical and non-technical audiences. Contribute to continuous improvement of catchment risk management approaches within the DWSP framework. Key Requirements Degree in Catchment Science, Hydrogeology, Environmental Science, Earth Sciences, or a related discipline. Minimum 5 years’ relevant professional experience in catchment management, hydrogeology, or drinking water protection. Demonstrated experience in: Catchment management planning Drinking Water Safety Plans (DWSPs) Water quality monitoring data analysis Stakeholder engagement in regulated environments Project or programme delivery Proven ability to undertake technical reviews and provide leadership or oversight to project teams. Strong report writing, data interpretation, and presentation skills. Desirable Experience Catchment risk assessment methodologies. Groundwater and catchment hydrogeological assessments. Experience using GIS to support catchment analysis and reporting. Familiarity with Irish or EU drinking water regulatory frameworks.