Dr Simanga Alex Tsela holds a Ph.D (Nuclear Physics) University of the Witwatersrand, MSc (Nuclear physics) University of Sussex, BSc (Physics & Maths) University of Swaziland, and MBA -University of Pretoria.

He has held several strategic roles in the past including but not limited to: Chief Executive Officer: PBMR, General Manager: Nuclear Compliance Assurance, Board of Directors in PBMR Company, Board of Directors in Nuclear Industry Association of South Africa (NIASA). CEO- ARECSA Human Capital (JV company of AREVA & Necsa), Interim CEO of the National Nuclear Regulator (South Africa) (2004-2005), Head of Regulatory strategy National Nuclear Regulator, focusing on leading research and development, safety standards and regulations, international liaison,(2001-2006): Radiation Protection Specialist for Regulatory body (National Nuclear Regulator) focusing on NORM facilities (1997-2001), Lecturer in physics: University of the Witwatersrand (1993-1996), and University of Swaziland (1990-1993), including supervision of Masters Students. He was an Independent Consultant in radiation protection (2006-2008), Chairperson of the South African Radiation, Member of the International Commission on Radiological Protection (ICRP), Committee 4.