He has worked as editor in influential Nigerian and international news publications. For five years between 1999 and 2004, he was West Africa editor of the monthly newsmagazine, Africa Today, published in the UK. He also freelanced for the Madrid-based El Mundo newspapers.

Previously, he was Bureau Chief at The Guardian newspapers, Associate Editor at Newswatch magazine, Deputy Editor of Theweek magazine and Editor of The Post Express on Sunday. He is a seasoned journalism trainer/mentor and communications consultant. Three years ago, he became the Publisher/Editor-in-Chief of an online news publication, Breezy NewsNG.

Muyiwa has also been a public relations consultant since April 2004 when he started as Group Head, Media Services at a frontline Nigerian PR firm, C&F Porter Novelli. He was also Executive Director at another PR consultancy, MarketingMix & Company, before setting up his own firm, Leap Communications.

He is a serial trainer in journalism and public relations, and also a book publisher. In July 2024, his firm, Leap Communications published An Encyclopaedia of Business and Management – An Epic Compendium, written by a chartered account, Mr. Eghosa Imade.