Doyle is best known for his debut novel, Hibernosis, published in 2023. The manuscript won the Irish Writers Centre Novel Fair competition, an important platform that has launched the careers of many emerging Irish novelists. Set in a near-future world, the novel imagines the discovery of a drug that eliminates the human need for sleep. Through this striking premise, Doyle examines ambition, corporate ethics, and the hidden costs of a society obsessed with productivity, tracing how a single scientific breakthrough reshapes work, family, and identity.
Critics have praised Hibernosis for its inventive concept, satirical edge, and thought-provoking engagement with modern anxieties about overwork and technological progress. Doyle's prose balances speculative imagination with credible scientific detail, positioning him as a fresh voice in Irish speculative fiction. Following the novel's publication, he has continued to write, and he is regarded as a promising talent whose future work is anticipated by readers of literary science fiction.