Oisín is a Client Services Associate at DSPolitical. He began his political career working on the PA-18 Special Election in 2018 as a Field Organizer. Since then, he has continued to work on campaigns across multiple states. Oisín was a Field Organizer in Pennsylvania and Wisconsin and has also coordinated multiple elections for city and state offices. His work includes the re-elections of Bob Casey, Tom Wolf, and Tony Evers and the victories of Joe Biden, Summer Lee, and Janet Protasiewicz.

Oisín is a devoted Arsenal fan who helps run his local fan club chapter and a die-hard Yinzer. He spends most of his time with his partner, Meera, and his puppy, Luka.