At Tufts University in the United States' Fletcher School of Law and Diplomacy, Pengiran Maidin graduated with a Master of Arts (MA) in 1990.
[2] Pengiran Maidin started his work at the government's Economic Planning Unit in 1976 as an administrative officer.
On 6 August 1997 Pengiran Maidin, the newly appointed permanent representative of Brunei Darussalam to the United Nations, gave Secretary-General Kofi Annan his letters of credence.
[2] Upon completing his tenure in 1998, he served as the permanent secretary at the Ministry of Finance[3][4] and later chair of the Public Service Commission (PSC).
[5] Sultan Hassanal Bolkiah gave his permission on 8 March 2006, to hand over credentials to Pengiran Maidin the recently appointed Brunei high commissioner to the United Kingdom.