Samuel Adigun
Indianapolis,IN
Summary
Experienced and results-driven IT Systems Administrator with over five years of expertise managing, maintaining, and optimizing enterprise-level IT infrastructure. Skilled in configuring and administering Cisco and FortiGate network devices, deploying and managing RingCentral communication platforms, and overseeing Microsoft 365 environments, including Exchange Online, SharePoint, Teams, and Intune for endpoint management. Known for strong troubleshooting abilities, timely issue resolution, and proactive system monitoring to ensure peak performance, data integrity, and network security. Adept at streamlining IT operations, improving user experience, and enforcing best practices in systems and security administration. Currently working toward CompTIA Network+ certification.
Overview
3
3
years of professional experience
Work History
IT Systems Administrator
Tom Wood Automotive Group
05.2024 - Current
- Administer Microsoft 365 tenant including Exchange Online, Teams, SharePoint, and compliance policies.
- Manage and deploy policies via Microsoft Intune for mobile devices and workstations.
- Configure and maintain FortiGate firewalls and Fortinet switches for secure and efficient traffic flow.
- Provision and manage RingCentral users and devices, including call flow setups and call queue management.
- Troubleshoot hardware, software, and network issues across 20+ locations, ensuring minimal downtime.
- Create and manage user accounts, groups, and policies in Active Directory and Azure AD.
- Perform routine system updates, security patching, and backups in line with IT policies.
- Analyze system logs and implement security measures to prevent unauthorized access or data loss.
IT Field Technician
Total Computing Solutions
09.2023 - 06.2024
- Conducted site surveys and installed network infrastructure, including cabling, switches, and wireless APs.
- Diagnosed and resolved technical issues in person, remotely, and via phone support.
- Deployed and configured operating systems, antivirus solutions, and line-of-business applications.
- Performed hardware repairs and software upgrades to ensure system reliability.
- Assisted with firewall configurations and VPN setup for remote clients.
Network Associate
HiiT Plc
02.2022 - 11.2022
- Installed and maintained Cisco routers, switches, and Fortinet devices.
- Monitored and optimized network performance using tools like SolarWinds and Wireshark.
- Managed on-premises Windows Server environments and user permissions via Active Directory.
- Created technical documentation for network configurations and operational procedures.
- Contributed to the design and testing of disaster recovery strategies.
Network Administrator Associate
City Commercial and Industrial Enterprise
12.2021 - 09.2022
- Installed and supported servers, desktops, and network printers across multiple offices.
- Conducted routine backups and implemented basic network security policies.
- Diagnosed network latency and configuration issues using protocol analyzers.
- Provided Tier 1 and Tier 2 support for LAN/WAN environments.
Education
Bachelor of Technology - Telecommunications Engineering
Bells University of Technology
08.2021
Skills
- Networking & Security: Cisco Devices, FortiGate Firewalls, Fortinet Switches, VPN, VLAN, DNS/DHCP
- Microsoft Ecosystem: Microsoft 365 Admin Center, Exchange Online, Teams, SharePoint, OneDrive, Intune
- Systems & User Management: Active Directory, Azure AD, Group Policy, Windows Server 2016–2022
- Communication Platforms: RingCentral Admin Portal, Call Routing, VoIP Deployment
- Support & Troubleshooting: Helpdesk Operations, Desktop Support, Remote Support (RDP, AnyDesk, TeamViewer)
- Monitoring & Maintenance: Log Analysis, Performance Tuning, Backups, Patch Management
- Tools & Utilities: PowerShell, Wireshark, SolarWinds, Snipe-IT, BitLocker, Autopilot, Endpoint Manager
- Windows administration
- IT documentation
Timeline
IT Systems Administrator
Tom Wood Automotive Group
05.2024 - Current
IT Field Technician
Total Computing Solutions
09.2023 - 06.2024
Network Associate
HiiT Plc
02.2022 - 11.2022
Network Administrator Associate
City Commercial and Industrial Enterprise
12.2021 - 09.2022
Bachelor of Technology - Telecommunications Engineering
Bells University of Technology
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