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John Williams Kotun is a skilled IT professional with extensive experience in technical support and systems administration. Currently serving as a System Administrator at Callsign since September 2022, John provides high-level technical assistance to both internal users and external clients, managing user bases across the UK, Eurozone, and US. Prior roles include Service Desk Analyst at Callsign, Service Desk Team Lead Engineer at Nittygritty.net Ltd - IT, and Field Service Specialist as well as Technical Support Engineer at Wavex Technology Ltd. Additional experience encompasses roles in customer service and technical support, including first-line support and network troubleshooting. John holds a Bachelor of Arts in Geography from the University of Ghana and has demonstrated proficiency in managing IT infrastructure and customer-focused service delivery throughout a diverse career.