On 21 December 2012, Sydorchuk signed a five-year contract with Dynamo. On 11 August 2013, he scored his first goal for the club in a league match against FC Chornomorets Odesa. On 29 September 2015, Sydorchuk made his UEFA Champions League debut in the second match of the group stage against Israeli club Maccabi Tel Aviv away from home, which Dynamo won 2–0.
Westerlo
On 5 September 2023, Belgian Pro League club Westerlo announced the signing of Sydorchuk on a three-year contract.[4]
International career
Sydorchuk made his full international debut for Ukraine on 9 October 2014, replacing captain Ruslan Rotan in the 64th minute of a European qualifier away to Belarus in Barysaw. In added time, he scored the second goal of a 2–0 win, a close-range finish set up by Andriy Yarmolenko.[5] Three days later in the next qualifier at the Arena Lviv, he scored the only goal to defeat Macedonia.[6]