 In 1923 or 1924, he opened a lawyer's office in Lwów.A close associate of Rydz-Śmigły, Biłyk took advantage of the relationship, and was nominated to the post of Voivode of Tarnopol Voivodeship (15 July 1936).A year later, on 16 April 1937, he advanced even further, becoming the Voivode of Lwów Voivodeship.