This document provides case studies and details on Brendan McKenna's experience in various roles related to IT and technology. It describes his work as CTO at TravelWin Group implementing SIM cards and eSIM solutions, as capacity management lead at Vodafone Ireland, as consultant director for Ubanquity on mobile core banking applications, fulfilling an outsourced chief consultant role for 10n2 Technologies, co-founding Picsoft RFID Solutions to develop RFID asset management systems, and as chief technologist for Jinny Software.