Lieutenant Colonel Pengiran Haji Saiful Amirul Bakri bin Pengiran Haji Ramlee joined the Royal Brunei Armed Forces in January 2001. Upon completion of basic military training at the Training Center, RBAF, he subsequently attended Cadet Training at Army College, Ulu Tiram, Johor, Malaysia and was commissioned as a Second Lieutenant in March 2003.
His previous appointments were as Platoon Commander B Company 2Bn RBLF, Intake Commander, Training Center RBAF, Platoon Commander A Company 1Bn RBLF, Staff Officer Grade 3 G1 RBLF HQ, Officer Commanding A Company 1Bn RBLF, ADC to the Crown Prince and Staff Officer Grade 2 to Commander of Royal Brunei Armed Forces. He assumed the appointment of the Commanding Officer 2Bn RBLF on 19th April 2019.
Lieutenant Colonel Pengiran Haji Saiful Amirul Bakri has attended various military career courses locally and overseas throughout his service. Among the courses he has attended were Grade 2 Staff and Tactics in Malaysia where he received the Commandants Paper Award and the 7th Command and Staff College at Defence Academy, Royal Brunei Armed Forces where he was awarded the Commandants Award.
His hobbies include Swimming, Cycling and Running. Lieutenant Colonel Pengiran Haji Saiful Amirul is married to Hajah Soveyanna binti Haji Abas.