Mudrinski began playing football in Vojvodina's youth academy. He scored a goal on his professional debut for the club from Novi Sad at the age of 18 in a match against OFK Beograd on 11 April 2010. However, after being loaned out to various clubs, Mudrinski signed for FK Jagodina in August 2011. He was quoted saying that "Vojvodina didn't give me a real chance."
Mudrinski made his debut for Jagodina at the age of 19 in a match against OFK Beograd on 20 August 2011. While this time he did not score on his debut, by the end of the 2011–12 season he became the eighth most prolific scorer in the entire league by scoring a total of 9 goals. He made his first appearances in UEFA competition at the age of 20 in July 2012 when he played both legs of his club's elimination by FC Ordabasy in the 2012–13 UEFA Europa League qualifying phase.
Mudrinski signed for Red Star Belgrade in August 2012. In advance of his promotion to the club, he had chosen the number 91 to represent the team's historic win against Olympique Marseille in the 1991 European Cup Final. On 2 September 2012, he scored a hat-trick against Radnički Niš on his debut for Red Star, becoming the first player in club history to do so. After he played postponed first fixture match against Javor Ivanjica, Mudrinski collected 16 caps in 15 fixtures for the first half-season. However, by the end of the 2012-13 season, Red Star coach Ricardo Sá Pinto told Mudrinski that he would not be relying on him in the following season.
On 8 July 2013, Mudrinski signed a 3-year contract with SpVgg Greuther Fürth for an alleged €800,000. Playing for the club, Mudrinski collected 14 caps for the 2013–14 season in 2. Bundesliga, also making an appearance in DFB-Pokal and one in play-off. After he made just one appearance, scoring a goal in DFB-Pokal match against SV Waldkirchat the beginning of 2014–15 season, Mudrinski moved to Switzerland. On 28 August 2014, Mudrinski signed a 1-year contract with FC Aarau.
In January 2016, Mudrinski signed a two-year contract with Spartak Subotica. For the spring half of the 2015–16 Serbian SuperLiga season, Mudrinski played 13 league matches, mostly as a back-up option, and scored 2 goals. He also played 2 cup rounds, scoring 2 goals in a match against ex-club Jagodina. Mudrinski started the 2016–17 season as the first choice striker. After the first half-season, he promoted himself as the best team scorer with 9 goals at total. In April 2017, Mudrinski extended his current contract with the club for a year.
On 25 July 2017, Mudrinski signed a three-year contract with Čukarički, with his transfer from Spartak Subotica costing €200,000. He made his debut for Čukarički in a 2–0 victory over Napredak Kruševac on 29 July 2017. On 25 August 2017, he scored his first goal in a league match with FK Rad, which Čukarički won 0-1 away. On 1 October 2017, Mudrinski was injured during a match against Partizan after a bad tackle by Everton Luiz. Mudrinski returned to the field in a friendly match against Bečej on 24 January 2018. On 18 March 2018, Mudrinski was sent-off in 3–3 draw to Javor Ivanjica, three minutes after scoring a goal. Shortly before, he had replaced Marko Docić 73 minutes into the game.
