Craig Mthika
Senior IT Infrastructure & Systems Administrator
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About
Senior IT Infrastructure & Systems Administrator with 10+ years of experience supporting and managing enterprise infrastructure, Microsoft 365 platforms, virtualization, networking, and cybersecurity solutions. Demonstrated success in leading IT operations, administering business-critical systems, and delivering secure, reliable technology services. Strong expertise in Microsoft 365, Entra ID, VMware, FortiGate, Veeam, and Windows Server environments.
Experience
Senior IT Support Technician / Site IT Lead - Packaging Management Services
(2023)
- Lead IT operations and infrastructure support across multiple business locations.
- Act as senior escalation point for complex technical incidents and infrastructure-related issues.
- Administer Microsoft 365 environment including Exchange Online, Teams, SharePoint Online, OneDrive, and Entra ID.
- Manage Active Directory user accounts, permissions, group policies, and security controls.
- Support and maintain Windows Server environments and core business services.
- Administer VMware virtual infrastructure including server provisioning and maintenance.
- Manage Veeam backup operations and disaster recovery processes.
- Configure, monitor, and troubleshoot FortiGate firewall environments.
- Support Cisco Catalyst C9800 wireless infrastructure and enterprise wireless connectivity.
- Manage Ubiquiti UniFi wireless controller environments.
- Maintain enterprise email security using Mimecast.
- Deliver infrastructure upgrades, hardware refreshes, and technology improvement projects.
- Coordinate third-party vendors, service providers, and support partners.
- Ensure compliance with IT policies, security standards, and operational procedures.
- Improved stability and performance of site infrastructure through proactive maintenance and monitoring.
- Successfully supported Microsoft 365 administration and user management across multiple departments.
- Reduced downtime through improved escalation processes and preventative support measures.
- Led infrastructure upgrade initiatives while maintaining business continuity.
Level 2 IT Support Technician - Newmantle
(2020 - 2023)
- Provided advanced technical support for desktop, server, network, and Microsoft 365 environments.
- Administered Active Directory, DNS, DHCP, and Windows Server services.
- Supported Microsoft Exchange Online and Azure/Entra user administration.
- Managed VMware virtual servers and infrastructure monitoring.
- Assisted with backup administration and recovery processes using Veeam.
- Performed network troubleshooting and infrastructure support activities.
- Managed endpoint security and patch management activities.
- Participated in server migrations and infrastructure improvement projects.
- Maintained technical documentation and operational procedures.
- Consistently achieved SLA targets.
- Reduced recurring technical issues through root cause analysis and process improvements.
- Supported successful migration and infrastructure enhancement projects.
IT Support Technician - Packaging Management Services
(2018 - 2020)
- Delivered end-user support for desktop, laptop, mobile, and printer environments.
- Managed Active Directory accounts and permissions.
- Supported network infrastructure and business applications.
- Assisted with Microsoft Office 365 support and administration.
- Logged and resolved incidents using service desk platforms.
- Provided remote and onsite user support.
Infrastructure Assistant - Pail Pac
(2015 - 2017)
- Supported IT infrastructure and networking projects.
- Maintained computer systems and peripheral devices.
- Assisted with cabling, connectivity, and hardware installations.
- Performed system troubleshooting and maintenance activities.
- Supported server and network administration teams.
Education
CompTIA A+ (Information Technology) - Boston City Campus & Business College (2023)
Business Administration Services (Level 3) - PMI, Durban (2021)
