Air Vice Marshal Lalith Rukman Jayaweera had his primary education from the St Aloysius College, Galle and secondary education at Richmond College, Galle. He is a graduate of Faculty of Medicine, University of Ruhuna.

Air Vice Marshal Lalith Jayaweera joined SLAF on 03rd April 1994. He has been awarded with “Vishishta Seva Vibhushanaya”, “Uttama Seva Padakkama”, North & East operation Medal, Purna Bumi Medal, Armed Forces Long Services Medal, Riviresa Medal, 50th Independence Medal, North Humanitarian Medal, East Humanitarian Medal and United Nation Services Medal.

Air Vice Marshal Lalith Jayaweera has served as the Senior Staff Officer at Directorate of Health Services, Commanding Officer of the Sri Lanka Air Force Hospital Katunayaka and Sri Lanka Air Force Hospital Ratmalana, and as Station Medical Officer of Colombo, Vavuniya, Chinabay, Palaly and Hingurakgoda SLAF Stations.

Air Vice Marshal Lalith Jayaweera has specialized in Aviation Medicine having followed the Primary Aviation Medicine Course and Aviation Psychiatry course at Institute of Aerospace Medicine at Bangalore, India and Diploma in Aerospace Medicine Course and Aircraft Accident Investigation course in Texas, USA. Air Vice Marshal Lalith Jayaweera possess a in MSc (D& SS) from Kotalawala Defence University and he is a graduate of Defence Services and Staff College, Batalanda. He was the President of Sri Lanka College of Military Medicine and the National delegate of International Committee of Military Medicine in 2018. He is a visiting lecturer in Medical faculty of Kothalawala Defence University and also serves as a Civil Aviation Medical Examiner of Civil Aviation Authority of Sri Lanka.

He is married to Preeni, and blessed with two children, Binuka and Janusha.