Over the career span of 35 years since the beginning in 1980s, he has held numerous prestigious appointments in the Army. Accordingly, Major General Peiris will be the 47th Chief of Staff of the Sri Lanka Army.
Major General Peiris has earned his Masters Degree in Philosophy (MPhil) from the University of Madras. He also holds a Postgraduate Diploma in Management from the Open University of Sri Lanka and a Diploma in Senior Level Defence Management from the University of Indore in India.
He is a recipient of Rana Wickrama Padakkama (RWP) and Rana Sura Padakkama (RSP) for his heroic deeds in war. He has also awarded with the Uttama Seva Padakkama (USP) for his unblemished military service.