Complex sentence: After five years of studying at the Bauman Institute, Saburov then became head of the Technological Bureau of a factory in Moscow in 1933, before becoming head of the instrumental division of the Stalin Novokramatorsk Machine Plant until 1937.
Split into simpler sentences: After five years of studying at the Bauman Institute, Saburov became head of the technological bureau of a factory in Moscow in 1933. Subsequently he was head of the instrumental division of the Stalin Novokramatorsk Machine Plant until 1937.