Voronin spent five full seasons in the Bundesliga of Germany, and last played as a striker or attacking midfielder for Dynamo Moscow.

He made his debut in the German Bundesliga against Bayern Munich in 1997 at the age of 18, but went on to spend a couple of years mainly in Mönchengladbach's youth teams.

[8] Voronin's start to the 2002–03 season with Mainz prompted the following quote from German football daily kicker: "The star of the 23 year old forward is on a rise due to the new role he plays for the team – he has complete freedom of actions.

[10] VfB Stuttgart, Bologna and a number of other clubs were then reported to approach his agent and Mainz initiated negotiations to extend his contract.

Köln were relegated at the end of the season, however Voronin stayed in the top flight after signing for Bayer Leverkusen.

[13] Voronin made his Premier League debut on 11 August 2007, coming on as a substitute in the 78th minute against Aston Villa in a 2–1 victory.

Liverpool manager Rafa Benítez was clearly impressed with Voronin, saying:"He is clever, has great game awareness and gives us so many more options in attack.

[14] He underwent surgery and made a small number of appearances at the end of the season but failed to make an impact.

Voronin was unable to secure a permanent move back to Germany during the summer of 2009, and as a result he returned to the Liverpool squad for the start of the 2009–10 season.

"[19] Voronin was ultimately recalled to the national side, scoring his first international goal in a 2–0 Euro 2004 qualifying win over Greece in September 2002 and a second one in a 2–2 draw against Spain in March 2003.

He was in the Ukrainian squad for the 2006 FIFA World Cup, in which Ukraine got to the quarter-finals, beaten by the eventual winners, Italy.

played in the finals of Cyprus International Football Tournaments 2009, where Ukraine beat Serbia(1:0)[20] On 14 October 2020 he returned to Dynamo Moscow as an assistant manager to Sandro Schwarz.