Jonas holds the following academic qualifications:
MPhil HIV/AIDS Management, Stellenbosch University, South Africa
MBChB Medicine, University of Zambia
B.Sc Human Biology, University of Zambia.

Jonas is a medical officer with clinical and research experience, including policy and program management experience in the fields of HIV/AIDS and PMTCT, antiretroviral treatment, and HIV prevention trials using Tenofovir and microbicides. Before joining ICAP, Jonas was responsible for clinical trial research with the U.S. Centers for Disease Control and Prevention-Botswana. He has also worked as a study research physician/site manager with the Harvard AIDS Institute Partnership in Botwana, and was a general practitioner in Botswana and Zambia.

In March 2005, Jonas wrote the following while working in Botswana: "Well Zambia today faces a serious political leadership crisis.This calls for men and women of vision to rise to the challenge and provide the necessary leadership. Having known Dr Mumba for some years now,he definitely stands in that light and is one of the few untainted politicians in Zambia today. The rest of them-Nawakwi,Levy,Chiluba,Miyanda,Mazoka,and many more are spent forces who can have nothing new to offer the country. Dr Mumba only has to be cautious with the many political fossils and vultures in the country who may try to use him and fulfill their own selfish ambitions. Forward with Freedom, Doc."