[3] After completing his SSC and HSC at Rangpur Cadet College, Ashraful Islam joined the Bangladesh Army.

Ashraful Islam, NDC, PSC, joined the Bangladesh Tea Board as chairman on 14 July 2021.

On 22 December 1989, he was commissioned into the Corps of Engineers through the 21st BMA Long Course and joined the 5 RE Battalion in the Postogola Cantonment.

Throughout his extensive career, he has successfully held various key command, staff, and instructional positions within the Bangladesh Army.

An avid traveler, he has visited countries including India, Dubai, Ethiopia, Eritrea, Italy, Sudan, Saudi Arabia, South Sudan, Uganda, Egypt, China, Singapore, Spain, France, Switzerland, the Netherlands, Belgium, South Korea, the United Kingdom, the United States, Malaysia, Turkey, and Rwanda.