Deirbhile presented a beginners guide to Irish - Now You're Talking - in the mid-1990s; that programme was broadcast on BBC NI and on RTÉ. She went on to become an announcer with TG 4 in the late-1990s. She is now in charge of programme acquisitions at TG 4.
Síle's broadcasting career began in September 1998 when she joined Galway-based Irish language channel TG 4 as a presenter/researcher on movie show 'Hollywood Anocht'. She remained with the programme until the following Spring. In Autumn 1999, Síle became a regular in-vision announcer and weather presenter at the station.