* Bangladesh Army (Artillery) - 17 years - as Corporal (clerk).
* United Nations Mission for Rwanda (UNAMIR) - 5 months - as Lorry Based Company Clerk.
* Joint Task Force ( JTF-190) under US Army (HHC 10th Mountain Division) -5 months - As superintendent, Movement control Cell.
* United Nations Mission in Haiti (UNMIH)- 6 months - As superintendent of movement control cell.
* Private Sector of Bangladesh - 15 years as Security Officer, In-Charge, Asst. Manager (Administration).