signed Gulácsi from MTK Budapest on a one-year loan in 2007, with the player competing in the treble winning reserve team. Liverpool had an option to buy him at the end of this loan deal, which they exercised on the last day of the transfer window, 1 September 2008. Gulácsi was the third person to sign for Liverpool from MTK, with previous signings András Simon and Krisztián Németh. On 29 July and 5 August 2010, he was the substitute goalkeeper in both of Liverpool's UEFA Europa League ties against Rabotnički, with Liverpool winning 2–0 on both occasions. He also found himself on the bench on 26 August in Liverpool's Europa League tie against Trabzonspor. He was a frequent presence on the subs bench in January 2011, with Brad Jones away at the AFC Asian Cup. With Jones still away at the Asian Cup, Gulácsi was the substitute keeper for their 1–0 Premier League win over Chelsea at Stamford Bridge. Gulácsi retained his spot as back-up to Pepe Reina after Brad Jones returned from international duty, with the Aussie 'keeper going to Derby County on a loan transfer in March 2011. In the 2009January transfer window, he was loaned to Hereford United, where he made his league debut. He went on to make 18 league appearances for the club. On 16 April 2010, Gulácsi joined Tranmere Rovers on an emergency seven-day loan deal and made his debut for the club on 17 April against Exeter City in a 3–1 win for Tranmere. His loan was subsequently extended for an additional seven days and into a third week. He re-joined Rovers on a one-month emergency loan on 17 September 2010 after Tranmere's two experienced goalkeepers Gunnar Nielsen and Simon Miotto were ruled out with injuries His loan period was extended into a second month until 24 November 2010.
On 19 July 2011, he signed a new contract with Liverpool and joined Championship team Hull City in a year-long loan move. He made his full debut for Hull in a start of the season clash against recently relegated Blackpool at the KC Stadium. He received a knee injury in a 1–0 defeat at Burnley on 31 December 2011 and was substituted by Adriano Basso on the 42nd minute mark, shortly after conceding a goal, scored by Martin Paterson, as a result of a defensive mix-up with Jack Hobbs. Following the injury, Gulácsi returned to Liverpool for a scan on his knee. On 11 April 2012, Liverpool contacted Hull with a view to recalling Gulácsi from his loan subject to Premier League, Football League and FA approval. Liverpool were at that time suffering a goalkeeper crisis, with both Pepe Reina and Doni serving suspensions, leaving Brad Jones as their only remaining senior goalkeeper. He finished his time with Hull City with 15 appearances.
Return to Liverpool
The loan recall was approved and Gulácsi took his place on the bench for the FA Cup semi-final, which Liverpool won 2–1. He featured in all three of Liverpool's pre-season games in North America.
On 7 June 2013, Red Bull Salzburg announced they had signed Gulácsi on a free transfer from Liverpool on a four-year deal. He played his first match in Salzburg's colours in the ÖFB-Cup, against Union St. Florian from the third division, at an eventual 9–0 away win. On 20 July 2013, he made his debut in the Austrian Bundesliga against Wiener Neustadt at an eventual 5–1 away win.
RB Leipzig
On 1 July 2015, Gulácsi transferred to RB Leipzig, the sister club of Red Bull Salzburg, for a fee of 3 million pounds. He finished the 2015–16 season by making 15 appearances for the first team and two appearances in the Regionalliga Nordost for the reserve team. On 17 December 2017, Gulácsi signed a new contract with RB Leipzig. His contract with the club would have expired in 2020 but he prolonged it by 2022. He finished the 2016–17 season with 34 appearances. Gulácsi was selected as the best goalkeeper of the autumn part of the 2017–18 Bundesliga season by the German sport magazine Kicker. He finished the 2017–18 season with 47 appearances. According to leading German sports magazine kicker, Gulácsi performed best in the Bundesliga's 2018–19 season matchday ratings with an average score of 2.61 and 16 clean sheets.
International career
In May 2008, he received his first call up for Hungary and was an unused substitute in their 1–1 draw with Croatia. Gulácsi was Hungary's hero against the Czech Republic in the FIFA U-20 World Cup in the penalty shootouts. In the third place match between Hungary and Costa Rica at 2009 FIFA U-20 World Cup, he saved three penalties during penalty shoot-out leading his team to victory and bronze medals. On 4 June 2012, he was invited by Sándor Egervári to the Hungary squad for a friendly match against the Republic of Ireland, but did not play. Gulácsi made his debut for the senior team on 22 May 2014 in a 2–2 draw against Denmark. Gulácsi was selected for Hungary's Euro 2016 squad.
