A former Sri Lanka under-19s player,[1] Jayaratne made his senior debut for the Colts Cricket Club in January 2009, in the Premier Limited Overs Tournament.

[2] In January 2010, he represented the Sri Lankan under-21s in the cricket tournament at the 2010 South Asian Games, winning a silver medal.

[4] During the 2012–13 season, he took 23 wickets from seven matches, behind only Sajeewa Weerakoon for Colts,[5] which included figures of 5/53 against Saracens and 7/37 against Lankan.

[4] Jayaratne was subsequently selected to make his debut for Sri Lanka A in the 2013 off-season, touring the West Indies and playing home series against New Zealand A and Kenya.

[2] At Twenty20 level, he has made appearances for Ruhuna, Southern Express (including in the 2014 Champions League Twenty20), and the Kurunegala Warriors.