He was appointed to his position on 11 March 2009 and resigned from the Maldivian government on 9 February 2012, soon after President Nasheed's government was allegedly overthrown by the incumbent President Mohammed Waheed Hassan two days earlier.
Moosa is amongst those who campaigned for democracy and human rights which led to the end of the 30 year rule of Gayoom in November 2008.
He is the founder and editor-in-chief of the news website Dhivehi Observer.Moosa is a senior member of the Maldivian Democratic Party and was elected to its first General Council.
He was a widely outspoken critic of the former president Maumoon Abdul Gayoom.
He lived in self-proclaimed exile in the United Kingdom with his family from 2003-2008.
The opposition Coalition won the Presidential Election held in October 2008.
Moosa resides in Glasgow, United Kingdom as of 2009.