Siobhán studied at the University of Galway and pursued a successful career as a writer in the technology industry, working for a number of organisations in Scotland, France and Ireland.

After many years writing short stories and articles, Siobhán published her first novel TWISTED RIVER in 2016. TWISTED RIVER is published in the US and Canada with Viking Penguin, and in the UK with Canelo.

Later that year Siobhán followed this up with her second novel THE BLUE POOL.

Siobhán lives in Ireland with her husband and two sons.