Ahmed was commissioned in the 4th Battalion the East Bengal Regiment of Bangladesh Army on 23 December 1983 in the 9th Bangladesh Military Academy Long Course. He served as Battalion Commander in 1st Bangladesh Battalion of Bangladesh Military Academy (BMA) and commanded an Infantry Brigade. He also served as the Director of Military Training in Military Training Directorate at the General Staff Branch, Army headquarters. He served as the General Officer Commanding & Area Commander of the 19th Infantry Division & Ghatail Area in 2012. He also served a the Director General of Bangladesh Institute of International and Strategic Studies (BIISS). Also served as the Chief of Doctrine of Army Training & Doctrine Command (ARTDOC).