Came up DJing at District 8 and Hangar in Dublin's mid-2010s rave revival, where he was running monthly nights before he was old enough to legally drink in most of the venues that booked him. Moved to Berlin in 2019 to build a proper studio above an auto shop in Wedding, and has never quite moved back.

Releases on Lobster Theremin and his own imprint Halloran Recordings established him as part of the new wave reclaiming UK hardcore from nostalgia. His 2025 12" Continental Drift sold out three pressings inside a month, and a Boiler Room set in Belfast last year is now sitting at 1.4 million views.

Roster handles his worldwide booking. Plays hardware-only — including a TR-909 he refuses to insure on the grounds that "if it dies on stage, that's a story" — and books his own travel through a single agent who has his complete trust and full access to his calendar.