Tahir has worked across diverse roles in Australia, Canada, and Pakistan, including as a Water Management Officer on Asian Development Bank projects, a Research Officer at the University of Queensland, and a Planning Officer with the Government of KPK in Pakistan. He also served as a Compliance Officer with Cargill Foods in Calgary, Canada. For the past three years, Tahir has been a Technical Officer (Dams) with Isaac Regional Council, contributing to regional water infrastructure and planning.