Summary
Overview
Work History
Education
Skills
Websites
Certification
Accomplishments
Training Membership
Timeline
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Tobi Orenuga

Takoma Park,MD

Summary

Dedicated and experienced System/Network Administrator with a proven track record of maintaining and optimizing IT infrastructures.

Highly flexible IT professional willing to take on new challenges

Overview

15
15
years of professional experience
1
1
Certification

Work History

System/Network Administrator

Lagos State Internal Revenue Service
01.2013 - 01.2024
  • Delivered comprehensive IT support for all agency IT equipment, services, and infrastructure across multiple areas, including: IT administration, mobile device management, network infrastructure, IT directive development and management.
  • Perform routine maintenance tasks, such as software updates, patches, and system backups, to ensure the stability and security of the network.
  • Monitor network performance and troubleshoot issues to minimize downtime and optimize performance.
  • Troubleshot network problems, identified root causes and developed solutions.
  • Updated system documentation according to changes made in the infrastructure environment.
  • Designed, implemented, and maintained network platforms within HQ and 39 branches across the State, ensuring seamless connectivity and optimal performance.
  • Monitored and managed the data center and network operating center, including the escalation of network product issues to various vendors for resolution.
  • Implemented and supported LAN and VPN solutions within HQ and across all branches, facilitating secure and efficient communication.
  • Connected, managed, and troubleshooted Cisco devices such as routers and switches, leveraging expertise in configuring routing protocols for optimal network performance.
  • Deployed and administered group policy objects, DNS, and DHCP using IP Address Management (IPAM) tools to maintain network stability and security.
  • Deployed and managed firewall solutions, including Sophos and FortiGate Firewalls, for effective security and bandwidth management.
  • Developed and implemented backup strategies to ensure data integrity and disaster recovery readiness.
  • Configured and administered enterprise applications such as Microsoft Exchange 2016 and anti-virus solutions to safeguard IT assets and data.
  • Analyzed second-level problems for all network connectivity devices and operations, resolving issues within service level agreements or escalating them to next-level support as appropriate.
  • Managed agents, reports, and live chats on the TAWK customer care app, ensuring timely and efficient resolution of user inquiries and issues.
  • Liaised with IT vendors to ensure efficient service delivery and provided regular reporting to the Assistant IT Director.
  • Provided training to end-users on how to use various applications related to their job functions.
  • Installed, configured and maintained network hardware and software.

IT Desktop Support/ Network Technician

Lagos State Internal Revenue Service
01.2009 - 01.2013
  • Trained end-users on how to properly utilize their computer systems in an efficient manner.
  • First point of contact for reporting technical issues regarding upgrade, installations & software/hardware issues.
  • Accurately diagnosed technical issues by collecting key information, documenting issues and escalating to team lead where necessary.
  • Troubleshooting and maintenance of Local Area Network.
  • Configuring and managing network equipment
  • Providing network support to staff across the 39-remote locations.
  • Coordinate and perform installation and maintenance of computer hardware.
  • Configure MS Exchange mails on staff mobile devices
  • Installing, supporting and administering end user application software (MS office suite, antivirus).
  • General PC maintenance, repairs and upgrade.
  • Developed new methods for improving system efficiency and reliability.
  • Configured, monitored and maintained network hardware, software and communication links.
  • Collaborated with IT teams when necessary to ensure proper implementation of projects.
  • Created detailed reports regarding system and network performance metrics.
  • Set up and installed network cabling infrastructure.
  • Installed and managed connected hardware and application components to assure nonstop environment operations.

Education

Certificate - Cybersecurity

University of Maryland,
College Park, MD
04-2023

Bachelor of Science - Computer Science

University of Ibadan
Ibadan
01.2008

Skills

  • Device configuration
  • Network Security Management
  • Firewall configuration
  • Network Administration (TCP/IP, VLANs)
  • Hardware troubleshooting
  • Incident Management
  • Configuration Management
  • IT project management
  • Microsoft Windows Administration
  • Active Directory

Certification

  • Cisco Certified Network Associate (CCNA), 2024
  • Microsoft Certified: Azure Administrator Associate, 2024
  • Certified Risk and Compliance Management Professional (CRCMP), 2024
  • Certification, Cybersecurity for everyone, 2023

Accomplishments

  • Implementation of VPN and VLAN at Lagos State Internal Revenue Tax Stations-Team Leader
  • Migration of all Windows Server 2008 to Windows Server 2012 at Internal Revenue Service -Team Member.
  • Configuration of network devices/networking of new head office at LIRS -Team Leader.
  • Deployment of biometric time attendance system at Lagos State Internal Revenue Service-Team Member.
  • Migration of Cyberoam Firewall to Sophos Firewall - Team Leader.
  • Deployment of Fortinet Firewalls at 39 branch offices.
  • Deployment of enterprise tax application for the agency-Team member (Network Group).

Training Membership

  • Nigeria Computer Society (Member)
  • Advanced Network Services (Windows Server 2012 R2)- -LinkedIn Learning Certificate of Completion
  • AWS Cloud Quest: Cloud Practitioner- Amazon Web Services and Certification
  • Introduction to Cybersecurity- Cisco Networking Academy
  • Cybersecurity Essentials- Cisco Networking Academy
  • Endpoint Security- Cisco Networking Academy
  • Networking Basics- Cisco Networking Academy
  • Networking Devices and Initial Configuration- Cisco Networking Academy
  • Introduction to Cybersecurity Tools and Cyber Attacks - IBM Digital Credential
  • ITIL V4 Fundamentals - Essentials of IT Service Management Certified - Alison e-Learning
  • CompTIA A+ 1000 Certification - Alison e-Learning
  • CompTIA Security+ Certification - Alison e-Learning
  • Diploma in Cyber Security - Alison e-Learning

Timeline

System/Network Administrator

Lagos State Internal Revenue Service
01.2013 - 01.2024

IT Desktop Support/ Network Technician

Lagos State Internal Revenue Service
01.2009 - 01.2013

Certificate - Cybersecurity

University of Maryland,

Bachelor of Science - Computer Science

University of Ibadan

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Tobi Orenuga