Dr. Collether John received a BSc degree in Electrical Engineering from the University of Dar es Salaam (UDSM), Dar es Salaam in 1999. She also has an MSc degree in Electronics Engineering and a PhD degree in Computing and Electronics Engineering from the University of Essex in the United Kingdom (2003). 

Dr Nyalusi is a Lecturer in the Department of Electronics and Telecommunications Engineering (ETE), College of Information and Communication Technologies (CoICT) of the University of Dar es Salaam. She is teaching and supervising undergraduate students and carrying out research and consultancy activities in the field of ICT. Her research interest and area of expertise is in portfolio optimization