He obtained additional certificates in Water Quality Management Course II: Management Aspects. Mr Mahlobo would later complete a course on Performance Budgeting and Financial Management Course as well as Targeted Recruitment and Selection at Deloitte Human Capital.

He worked as an Educator in Bambanani High School, responsible for Biology and Physical Science for Grade 10 and 11 learners. He later worked in Lalela Finishing School, teaching Physical Science and Biology for Grade 12.

Mr Mahlobo cut his teeth in the water sector when he joined the then Department of Water and Forestry, Mpumalanga province, in the Water Quality Division, responsible for the Upper Olifants River Catchment with respect to Water Use Control at mines, municipalities and industries; Water Resource Management Protection and Impact Management, Water Quality Management and Water Quality Communication.

He was later promoted to be an Assistant Director: Transformation (later renamed External Transformation) and rose through the ranks to become Deputy Director and Director in the same Unit at the Department of Water and Forestry. In 2009, he was appointed as the Head of Department (HOD) for Cooperative Governance and Traditional Affairs by Mpumalanga Provincial Government for a period of three years which was further renewed in 2012.

He resigned as HOD for COGTA in 2014 when he became ANC Parliamentary Candidate.