Complex sentence: Mike Cowlishaw is a retired IBM Fellow, a Visiting Professor at the Department of Computer Science at the University of Warwick, and a Fellow of the Royal Academy of Engineering, the Institute of Engineering and Technology, and the British Computer Society.
Split into simpler sentences: Mike Cowlishaw is a Visiting Professor at the Department of Computer Science at the University of Warwick, and a Fellow of the Royal Academy of Engineering. He is a retired IBM Fellow, and was a Fellow of the Institute of Engineering and Technology, and the British Computer Society.