Career
Born in Gdańsk, Szromnik began his career with local regional league club Gedania Gdańsk. He joined Arka Gdynia in 2009 and was promoted to their first team squad a year later. He joined Dundee United in July 2014, signing a three-year contract.
He made his first team debut for the club in February 2015, but was sent off in his second appearance.
Szromnik has previously represented the Poland under-21 team