Mr. Tikiri Jayathilaka, who started his professional career by joining the Attorney General's Department in 2002, has handled cases in many magistrate courts and high courts as a State Counsel. Mr. Jayathilaka, who joined the judiciary in 2006, served as a Magistrate and Additional District Judge and served in various courts around the country.

He earned his L.L. B from the University of Colombo. He received his LL.M from the Northumbria University. He has also published a book on Community based Corrections.
In 2015, Mr. Jayathilaka, joined the Parliament of Sri Lanka as the Assistant Secretary General (Legislative Services.)