His 10th grade of high school he finished in Lutsk, and to graduate he was forced to end his final year in Donetsk due to his transfer to the Shakhtar football academy.

In 2018 he defended his dissertation in Volyn University on a subject "Methods of training football students using information models" and received academic degree of Candidate of Pedagogical Sciences.

Also, early in his career Fedetskyi played for amateur club ENKO Lutsk in local Volyn Regional Football League.

Fedetskyi remained with Shakhtar until 2006 without playing a single match for the first squad and staying with reserves where for a short while he was wearing the captain's band.

In 2010 he also scored his first goals at the continental club's competitions, UEFA Europa League, on 22 July 2010 in home match against KR Reykjavík.

Following the 2015–16 Ukrainian Premier League Dnipro was barred from European competitions for refusing to pay on its contracts due to situation with the club's owner (Ihor Kolomoyskyi) and the Russo-Ukrainian War in general.

In 2016 Fedetskyi signed with the German SV Darmstadt 98 that recently returned to Bundesliga (after 33 year break) and was struggling to stay at the top tier.

Being 32 years of age, Fedetskyi signed a two-year contract with Karpaty[5] and stayed with them for the next couple of seasons before retiring from professional football.

[6] One of Russian sports reporters Vasily Utkin commented that Fedetskyi was lying about his 2 million euros contract offer.

[9][10] After playing a home match on Sunday, 17 August 2008, against rivals Metalist Kharkiv which Shaktar tied 2:2, Fedetskiy was named by UA-Football as the best right midfielder of the fifth round in the Ukrainian Premier League.

[1] In 2021 in interview to some Ukrainian internet media, Fedetskyi expressed his thought that Tymoshchuk is being overcriticized in Ukraine as well as the Russian Federation.