He is the owner of MeTL Group, a Tanzanian conglomerate founded by his father in the 1970s. Dewji served as Member of the Tanzanian Parliament for Chama Cha Mapinduzi (CCM) from 2005 to 2015 for his home town of Singida.
He is the leader of MeTL Group, a multinational corporation based in Tanzania that was established by his father in the 1970s. Dewji held a seat in the Tanzanian parliament for the CCM party from 2005 to 2015, representing his hometown of Singida.