Rónán lectures at the Atlantic Technological University (ATU) and is also a member of the Sport Ireland Institute, Performance Nutrition team.  He currently works predominantly with Irish Sailing having previously worked across a range of national teams including Hockey, Rowing, Boxing, and Paralympics sports. Rónán was the Performance Nutritionist to Irish Olympic medalists Annalise Murphy (Sailing) and Gary and Paul O'Donovan (Rowing). He was also the lead Performance Nutritionist for Donegal GAA from 2015-2019 and is now the head of performance nutrition for the Donegal GAA Academy. 

Rónán has completed a PhD in sleep and athlete recovery at Northumbria University. The research team was made up of academics from Northumbria University (Professor Jason Ellis), the Sport Ireland Institute (Dr. Sharon Madigan), and the University of Limerick (Dr. Giles Warrington).