His debut with Skënderbeu Korçë came on 17 August in the 2014 Albanian Supercup against Flamurtari Vlorë after coming on as a substitute at 65th minute in place of Tefik Osmani.

[3][4] At the end of the 2014–15 season, Jashanica renewed his contract with Skënderbeu Korçë for another two years alongside fellow Kosovo Albanian player Leonit Abazi.

[5] Jashanica started the 2015–16 season as the best, he netted in a header from a corner assisted by teammate Bernard Berisha in a 5–1 away defeat in the group stage of 2015–16 UEFA Europa League against Sporting CP, that was the first ever goal that Skënderbeu Korçë have scored in a major tournament.

In April 2018, Panorama Sport announced that Jashanica it is at risk to be punished with a two-year ban from football by UEFA.

[11] On 21 May 2014, he made his debut with Kosovo in friendly match against Turkey after coming on as a substitute at 80th minute in place of Mehmet Hetemaj.