 In 1937, he began to work at the Experimental Aeronautical Workshops (Doświadczalne Warsztaty Lotnicze) RWD at the Okęcie airport in Warsaw as an aircraft constructor, continuing his studies in the same time.In the fall of that year he married Alina Dabkowska.He prepared at that time the technical documentation of the reconnaissance plane RWD-14 Czapla.