The 19-year-old midfielder expressed his delight at signing for Lucien Favre's team from Swiss side Basel, while also delivering praise for the German top flight
The German side announced on Friday that the 19-year-old signed a five-year deal at Borussia-Park, with the transfer fee estimated to be in the region of €8.5 million.
Xhaka rose to prominence in 2011-12 after starring for Basel in the Champions League, most notably beating Manchester United in the group stage, before delivering a third consecutive league title for the club.
"Gladbach's board is standing behind me. They have given me confidence right form the start. I wanted to stay at an international level," the young midfielder told Express.
"I'm making the next step [in my career]. The Bundesliga is the strongest league in the world. It's an exciting challenge.
"I have not come to Gladbach to fight against relegation. In the Bundesliga, for me, the goal is to get back into the top four. I want the club to play well in the Champions League."
Gladbach finished the 2011-12 season in fourth place, and have qualified for the Champions League play-off round.