Katharyn began doing stand up comedy in New York where she worked her way to regularly hosting and performing nightly all over the city. She has been seen regularly at venues including but not limited to New York Comedy Club, Gotham Comedy Club, Broadway Comedy Club, The Stand, and The Comic Strip as well as countless backs of bars, windowless basements, rooftops, and bathroom stalls. Currently based in London, Katharyn can be seen regularly at Top Secret Comedy Club, Vauxhall Comedy Club, Up the Creek among other clubs, dives, and holes-in-the-wall on the circuit. Katharyn's project outside of stand up is co-hosting the podcast "This American Irish Life" with Mark O'Keeffe.