[1] He spent his career in the Ukrainian Premier League Reserves and was promoted to the first team in October 2016.

Tymchyk made his Ukrainian Premier League debut for Dynamo Kyiv in a match against Dnipro as a starter on 6 November 2016.

[4] Tymtchyk is selected by Ukraine's coach Andriy Shevchenko in the list of 26 players to participate in UEFA Euro 2020.

[5][6] On 24 September 2022, Olexandr scored his first goal in selection against Armenia during Ukraine's 0-5 victory and also offered a decisive pass to his teammate Oleksandr Zubkov.

[7] This biographical article related to a Ukrainian association football defender born in the 1990s is a stub.