Warrant Officer 1 Pengiran Mohammad Soffian Bin Pg Haji Matusin, RBN, PIKB was born on 23 January 1976. He joined the Royal Brunei Armed Forces on 13 December 1993 and joined Royal Brunei Navy on 18 July 1994. He was promoted to the rank of Lance Corporal in 1997 and to Corporal in 2000. He was promoted to Sergeant in 2003, Staff Sergeant in 2006 and to Warrant Officer II in 2009. He was promoted to Warrant Officer I in 31 March 2013.
During his service, he held numerous staff and command appointments such as Navigation Yeoman and Buffer of Missile Gunboats and Coastal Patrol Crafts. He was the last Coxswain of KDB SETERIA before it was decommissioned in 2009. He was also a training instructor of Training Wing from 2003 till 2007. He was appointed to Drill Sergeant Major on 01 August 2009, he is currently the Royal Brunei Navy Sergeant Major, a command appointment he held since 31 March 2013.
Throughout his career, he has undergone various courses local and abroad such as NCSO Navigation Detection Class 2 in 1999 and Class 1 in 2005, Jurumudi A2 in 2003, A1 in 2005, attend Principal Radar Instructor, (PRI) at Republic Islamic Pakistan in 2006, and X2 in 2008. He also completed Basic Silent Precision Drill Squad in 2004 in Singapore. He is married to Hjh Asabah Bte Hj Daud and blessed with three sons and a daughter. He has keen interest in sports especially in football and volleyball.