[7] He had served in the United Nations Transitional Authority in Cambodia as the chief military liaison officer.

[7][8] In 1999, Muniruzzaman worked for the establishment of Bangladesh Institute of Peace Support Operations Training.

[10] In 2013, he testified in front of the United States House Committee on Foreign Affairs about Bangladesh.

[13] On 22 January 2023, Muniruzzaman was elected Chairman of the Global Military Advisory Council on Climate Change.

[16] After the resignation of Prime Minister Sheikh Hasina he called on India to engage will political parties in Bangladesh.