Mkululi is the Academic Development Coordinator at the Centre for Creative Education. Most recently, he worked as a Learning Designer for the UCT Online High School at Valenture Institute. His teaching experience includes being a Teacher at Westerford High School, as well as part-time Junior Lecturer in the Faculty of Education at Stellenbosch University. During his time at Stellenbosch University, he worked as the Recruitment and Alumni engagement Coordinator in the Faculty of Education and as an Assistant Residence Head in the Centre for Student Communities.

He obtained a BEd (Intermediate & Senior Phase) degree cum laude in 2017, followed by a BEd Honours (Education Development & Democracy) degree in 2019, both from Stellenbosch University. Mkululi is a class of 2018 Mandela Rhodes Scholar and he has done a substantial amount of research on the politics of race and knowledge in higher education. His main field of academic interest is the politics of language in South African schools. In particular, how the indigenous African languages are taught, by whom, and with what effects in the former white schools after apartheid. His goal is to play a role in policy and research on how to advance the teaching of African languages in post-apartheid South African schools