Kaijage received his Doctor of Engineering (Electronics and Information Eng.) and Master in Engineering (Electrical and Electronics Eng.) degrees from University of the Ryukyus, Okinawa, Japan, in March 2011 and March 2008, respectively. Since February 2014, he has been working with Nelson Mandela African Institution of Science and Technology (NM-AIST) in Tanzania as a Lecturer and Head at the department of Communication Science and Engineering (CoSE).
Between September 2011 and December 2013, he worked as a post-doctoral research fellow at the Research Center of Terahertz Technology in the College of Electronic Science and Technology, Shenzhen University, P. R. China. He has also worked as a Research Assistant (RA) for about three years since 2008 in the Fiber Optics Lab, University of the Ryukyus, Okinawa, Japan.
Dr Kaijage has published over 25 scientific papers in international peer-reviewed journals and more than 50 research papers presented in various international conferences. Furthermore, he is a recipient of numerous international awards and grants (from the USA, Japan and China) as recognition to his scholarly works. He is also a member of the Institute of Electrical and Electronics Engineering (IEEE) and the Optical Society of America (OSA) and an Affiliate of the African Academy of Science.
Dr Kaijage specialised in optics and photonics, optical fiber and photonic crystal fibers, fiber optics communication, fiber to the home, terahertz wave technology, smart grid, radio frequency identification and wireless sensor networks technology.