Lieutenant General Senanayake was appointed as the 22nd Commander of the Sri Lanka Army, effective from 27 June 2017 by President Maithripala Sirisena after he was elevated to the rank of Lieutenant General with effect from the same date.
He was an Old Boy of Ananda College, Colombo and was enlisted to the Sri Lanka Army on 16th October 1981 under the Officer Cadet Intake 16. Upon completion of military training, he was commissioned as a Second Lieutenant and passed out as the first in order of merits and awarded with the Sword of Honor. He joined the Corps of Engineers and was subsequently posted to the 1 Plant Engineer Regiment on 23 June 1983. During his military career, Senanayake has held many Command, Staff and Instructional appointments.
He is a graduate of the United States Army Command and General Staff College. He holds a Bachelor of Science Degree in Civil Engineering from Jawaharlal Nehru University, India.
In recognition of his bravery during the operations, Lieutenant General Senanayake was awarded the Rana Wickrama Padakkama (RWP), Rana Soora Padakkama (RSP) several times and the Uththama Seva Padakkma (USP). He is married and blessed with two daughters and a son.