She was the first woman police officer in Bangladesh Police given the responsibility of a Superintendent of Police (SP) at the district level.
She successfully performed her duty as the SP of Munshiganj district from 1998 to 2000. She later served in different units as Deputy Commissioner, Additional Commissioner and Acting Commissioner of Police.
In recognition of her work, Rowshan Ara was awarded the Anannya award in 1999.
She served as a Crime Analysis Officer in a UN Peacekeeping Mission in Kosovo, and as Chief-of-Staff, UNMIS-UNPOL Peacekeeping Mission in Sudan.
At the same time, she served as ex-officio President of Women’s Network for UNMIS-UNPOL with a membership from 42 countries. She was also a recipient of UNMIK Medal and UNMIS Medal.