He headed the Ministry of Housing, Town Planning and Regional Development from 2009 to 2014, as well as once being president of the Nouadhibou Free Zone.

Sidiya began his career as head of the Bureau of Studies and Programming of the National Industrial and Mining Company (SNIM) then General Manager of CompuNet.

He was the general director of the government agency in charge of the town of Tindame's reconstruction after it was washed away by torrential rains in 2008.

[3] He served as the Minister of Housing, Town Planning and Regional Development from 2009 to 2014, as well as once being president of the Nouadhibou Free Zone.

[3] In 2010, as the Minister of Housing, Town Planning and Regional Development, Sidiya stated that the housing problem was exacerbated by economic inequality and that homelessness was the most pressing factor in poverty and exclusion, as well as noting that most of the Arab world were struggling with increased rural flight and urbanization over the past decades.