Tomisin Arowolo
Information Technology Administrator @Cliantha Research Limited
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WORK HISTORY
Information Technology Administrator @Cliantha Research Limited
ON, CA
Providing Level 2 support for network access issues related to firewalls, VLAN segmentation, and security rules.Implementing and managing Active Directory, Microsoft 365, and Microsoft Entra ID, ensuring secure and efficient user and computer management.Configuring and maintaining Cisco switching environments, ensuring optimized WAN link utilization.Administering Cisco Unified Communications Manager (CUCM) and Cisco CCX for seamless phone system operations.Deploying Endpoint measures as an XDR solution, enhancing threat detection and response capabilities across the organization\'s endpoints.Managing VMware virtualization infrastructure and optimized resource allocation.Creating incident response logs and supported audit evidence reporting for compliance.Assisting in writing detailed execution documents for network changes, minimizing risks.Maintaining technical documentation and provided training on network security policies to internal users.Managing and configuring user accounts, permissions, and group policies leveraging Active Directory. Providing remote support to end users by VNC, RDP, TeamViewer with a verbal disclaimer.Performing diagnostic tests and debugging procedures to optimize computer systems.Implementing advanced troubleshooting techniques, resolving complex IT issuesefficiently and effectively.Currently providing technical support to 250+ end-users via helpdesk tools like Spiceworks and Jira Service Desk.Install, configure, & maintain operating systems, application software, and system management tools.Deploy printers by GPO policy enforcement of shared printers to users and computers.Deployment of various new IT solutions needed as per business requirements.
EDUCATION
Southwestern University, Nigeria
Bachelor of Applied Science - BASc, Computer Science
triOS College Business Technology Healthcare
IT Professional , Computer and Information Sciences
ABOUT TOMISIN AROWOLO
I\'m Tomisin, a results-driven IT Infrastructure Strategist with over 5 years of hands-on and leadership experience in network engineering, cybersecurity, and enterprise IT operations, ensuring 99.9%+ network uptime across multi-branch organizations.My expertise lies in designing, securing, and optimizing resilient IT systems that align with business goals. I’ve led end-to-end network implementations, streamlined troubleshooting processes, and contributed to seamless cloud migrations while upholding strict SLA requirements.My background also includes managing critical IT support functions, cross-platform job coordination, and collaborating with cross-functional teams to enhance operational efficiency and service delivery.Core Highlights:Spearheaded network infrastructure projects supporting over 100+ users and remote branches.Delivered 30% improvement in customer satisfaction by optimizing support resolution workflows.Reduced incident escalation by 40% through proactive monitoring and root cause analysis.Hands-on with technologies like Cisco, Windows Server, Kali Linux, SDN, TCP/IP, CA7, AutoSys, and FTP/NDM integrations.Currently building deeper expertise in cloud security and ITIL-driven service management to drive digital transformation initiatives in the Canadian tech space.I\'m based in the GTA, Ontario, and open to hybrid or remote roles in IT Automation, IT infrastructure strategy, cybersecurity analysts, network operations, or network/security engineering.
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