Gaz Metan Mediaș / Rennes Sepsi was born on 7 June 1987 in
Luduș, Romania, being of
Hungarian descent, and began playing junior-level football at local club Mureșul, going afterwards to ȘS Târgu-Mureș,
Olimpia Satu Mare and Sporting Pitești. He made his professional debut during the
2004–05 Divizia B season under the guidance of coach
Ioan Sabău at
Gaz Metan Mediaș. He made 24 appearances and scored once, as the team fought for promotion until the last round but finished in second place on equal points with
Jiul Petroșani, which promoted on a better goal average. In 2005 he moved abroad, signing for
Rennes, being brought to the French club by compatriot
László Bölöni, the team's manager. Sepsi did not feature in any
Ligue 1 matches in the
2005–06 season, only being fielded in a couple of
games for the
Coupe de France.
Gloria Bistrița Afterwards he returned to Romania, joining
Gloria Bistrița which paid €200,000 for his transfer. In his
first season with Gloria, he helped the team finish in sixth position.
Benfica / Racing Santander On 12 January 2008, Sepsi signed a five-and-a-half-year contract with Portuguese club,
Benfica for an undisclosed fee (newspapers reported a sum between €1.7 – 2.5 million). He made his
Primeira Liga debut on 17 February when coach
José Antonio Camacho sent him to replace
Freddy Adu in the final minutes of a game against
Naval, managing to provide an assist for a goal scored by
Nuno Assis that secured a 2–0 win. He played three matches in the
2007–08 UEFA Cup campaign, helping
The Eagles get past
1. FC Nürnberg and reach the round of 16 where he played in both legs of the 3–1 aggregate loss to
Getafe. In August 2008, Benfica loaned him to Spanish club
Racing Santander in a
season-long move. Sepsi made his
La Liga debut on 31 August when coach
Juan Ramón López Muñiz sent him in the 86th minute to replace
Óscar Serrano in a 1–1 home draw against
Sevilla. He played 19 games – 14 starts – as the
Cantabrians finished in 12th position, thus retaining their division status. He also played four games in the
2008–09 UEFA Cup, helping Racing eliminate
Honka in the first round and reach the
group stage. Deemed surplus to requirements by new Benfica boss
Jorge Jesus, Sepsi was again loaned to Racing Santander for the
2009–10 season. However, he appeared rarely in his second spell.
Politehnica Timișoara On 4 January 2010, Sepsi joined
Politehnica Timișoara for a fee believed to be between €1.2 – 1.5 million on a five-year deal. The club's president,
Marian Iancu, revealed that the whole deal was worth €2.3 million, which included both the transfer fee and the player's wages. Sepsi reunited once again with coach Sabău, who, on 20 January 2010, gave him his debut in a 0–0 away draw against his former team Gloria Bistrița. He helped
The White-Purples get past the third qualifying round of the
2010–11 Europa League against
MyPa. The Finns were leading 3–0 at half time, but Politehnica made a comeback in the second half after
Marián Čišovský equalized in the 90+2 minute. The team finished in second position in the
2010–11 championship. Despite this performance, Politehnica was relegated by the
Romanian Football Federation to the second league for not fulfilling the license conditions to play in European competitions and first league. After spending the first half of the
2011–12 season in the second league, in January 2012, Sepsi was declared a
free agent by the
Court of Arbitration for Sport.
Târgu Mureș / CFR Cluj He returned to first league football, playing in the second half of the
2011–12 season for
Târgu Mureș, working again with Sabău, but the spell was unsuccessful as they were relegated. In June 2012, after his contract expired, Sepsi signed with
CFR Cluj for three seasons. He played four games in the
2012–13 Champions League group stage as CFR earned 10 points in a group composed of
Manchester United,
Galatasaray and
Braga, which helped them finish third. Subsequently, they qualified for the round of 32 in the
Europa League, where they were defeated by
Inter Milan. In February 2014, Sepsi was loaned by CFR back to Târgu Mureș, helping them earn promotion from the second league to the first. His transfer to Târgu Mureș subsequently became permanent.
1. FC Nürnberg In the summer of 2015, after extensive negotiations, Sepsi signed with
1. FC Nürnberg of Germany. He played 26
2. Bundesliga matches in
his first season, also starting in both legs of the promotion/relegation play-offs that were lost 2–1 on aggregate to
Eintracht Frankfurt. In the
2016–17 campaign, Sepsi was sidelined for several weeks with an ankle injury. In June 2018, the club decided not to renew his expiring contract.
Universitatea Cluj On 28 August 2018, aged 31, Sepsi returned to his homeland and joined second league side
Universitatea Cluj. The team was close to earning a promotion to the first league as it finished third in the
2018–19 season, then played a promotion play-off against
FC Hermannstadt which was lost with 3–0 on aggregate. ==International career==