PW1 Rosleen bin Tujoh was born on the 20th of June 1976. He enlisted into the Royal Brunei Armed Forces as a recruit on 02 May 1994 and received "Pingat Laila Tugas" on 17 January 1996.
Throughout his career, he has undergone various courses both locally and internationally such Potential Course in 18 March 1996, Drill Instructor course in 27 June 1997, Section Commander in 5 September 1997, Weapons Instructor Course in 07 July 2000, Jungle Warfare Instructor in 27 July 2001, Combat Platoon Sergeant in 14 September 2001, GPMG (SF) in 08 April 2004, Range Management Course (RMC) in 09 April 2008, Occupational Health And Safety for Senior Rank in 5 December 2012, Duty Watchkeeper in 12 December 2012, Assistant Unit Security Officer in 4 March 2013 and is currently on a Leadership and Management for Warrant Officers course which will end in September 2014.
His current appointment is Academy Sergeant Major (ASM) at Defence Academy Royal Brunei Armed Forces from 18th May 2018. His previous appointment was a OCS School Sergeant Major and before that he is appointed as an Instructor at Officer Cadet School. He is married to Hajah Nurbadri binti Haji Mohd Nassir and lives in Kampong Bukit Sulang, Tutong District.