Pierre J. Cilliers is a Senior Researcher at the South African National Space Agency. He obtained his BSc and Hons degrees in Engineering at the University of Pretoria, received his M.Sc. in Electrical Engineering at George Washington University, and earned his Ph.D. in Electrical Engineering at Ohio State University. In 2004, he was appointed as a space physicist at the Space Science Directorate (previously Hermanus Magnetic Observatory) of the South African National Space Agency, where he led the research on ionospheric tomography using GPS. In 2010, he was appointed Adjunct Professor in the Department of Electrical Engineering at CPUT, where he supervises several postgraduate students on research on space weather applications using CubeSats. In 2013, he was appointed Adjunct Professor in the Department of Electrical Engineering at UCT, where he supervises several postgraduate students on research on geomagnetically induced currents and other space weather applications. His current research focus areas are ionospheric scintillation, geomagnetically induced currents, and HF radio propagation.