After moving back to Mauritania, he began working for the "Société nationale industrielle et minière" (SNIM), which mines for iron in Mauritania, and he became head of a steel mill in 1979. Between 1985 and 1988 Hademine served as Head of Department purchases for SNIM. In 1989, he was promoted to CEO of the Arab Society of Iron and Steel (SAFA), which is a subsidiary of SNIM. Hademine was appointed general manager of the Sanitation Maintenance and Transportation Works (SMTA) in 2008. He said there were too many engineers in the SMTA and the quality of work was poor. After the 2008 Mauritanian coup d'état that overthrew President Sidi Ould Cheikh Abdallahi, Hademine sided with the coup leaders and was allowed to keep his job. In December 2010, Hademine became Minister of Equipment and Transport. In his four years as minister, he made no significant changes.