Dr. Nyakundi is the head of the Department of Communication, Languages and Linguistics. He is also a lecturer in the department. Dr. Nyakundi has published two journal papers on communication of mental health issues in Kenya. He earned his PhD in Mass Communication from Jomo Kenyatta University of Agriculture and Technology in 2015.

Dr. Nyakundi has a deep interest in research on health communication and behaviour change issues.He has also written a book entitled The Translation of Figurative Language in the book of Proverbs in the Ekegusii Bible. In addition, he has co-authored four books for English used in Zambia and Rwanda published by East African Educational Publishers. 

Before joining PAC University, Dr. Nyakundi was a teacher of English and Literature at Alliance High School. He has also taught various communication courses at Jomo Kenyatta University of Agriculture and Technology, Multimedia University and Kenya Institute of Mass Communication.