TOSIN ELEBUTE

Network Security: General Network Security implementation. I collaborate with the infrastructure team to ensure appropriate design, test and implementation of appropriate Network design. i am responsible for creating firewall rules for different network zones to ensure secured communication without disruption to information Confidentiality, Integrity and Availability (CIA)

Network Vulnerability Testing: Conduct comprehensive network vulnerability assessment of systems and networks, review the result and implement measures to address the vulnerabilities without disrupting legitimate traffic flow.

SIEM Management: I am responsible for the Monitoring and analysis of alerts received from the SIEM and other security tools. I create use cases, perform root cause analysis to ascertain what happened and remediate when necessary. Implementation and maintenance of our security event monitoring tool.

Incident Management: I Built our security incident management capabilities. I developed the incident management process in alignment with the relevant cyber security framework. I also ensure that the process is followed during incident investigations and escalations, while capturing lessons learnt.

Threat Intelligence gathering: I use microsoft defender, Crowdstrike and other user behavioral analysis security tools to investigate live and future threats by evaluating the impact on the current security trends, advisories, publications, and academic research to ensure appropriate controls are implemented across the networks.

Team Management: I oversee the Network Security & Administration, Threat and Vulnerability Management and the Security Operations unit of the Bank.

• Oversaw company's entire network and security infrastructure.
• Installed and configured network security solutions such as VPNs, Firewalls and intrusion detections and mitigation tools
• Manage multiple data centers and interconnectivity between them
• Configured, tested and maintained LAN/WAN components and connections
• Administer enterprise IP networks in mission-critical, 24x7 production environments
• Provide a high level of hands-on experience with configuration, optimization and maintenance of network infrastructure built with major technologies such as SDWAN, MPLS, DMVPN, BGP, OSPF, EIGRP, DMVPN and QOS
• Improved network operation by incorporating new technologies into existing designs to create redundant, scalable, resilient environments
• Troubleshoot and monitor network performance and resolve performance and connectivity issues
• Recommended network security standards and upgrades to management
• Led planning and technical design activities for routine operations and special projects
• Troubleshot complex multi-vendor network service provider issues
• Escalated emergency technical issues beyond knowledge to maintain optimum up-time
• Collaborated with vendors to identify best options for optimizing network performance
• Provided detailed network diagrams, documentations and procedural guidelines

• Manage deployment and Migration of SDWAN Technologies to branches
• Integrated and managed all applications’ network to ensure 99.9% availability
• Responsible for multiple data center network connectivity, availability, and reliability, which include dark fiber connection
• Performed network troubleshooting to isolate and diagnose common problems.
• Configure, maintain, and manage Firewall (Palo Alto and ASA), ISE and other network devices according to change management approval to ensure network security
• Review technical specifications from clients and vendors to confirm adequacy, accuracy, and functionality
• Monitor system resource utilization, trends, and capacity planning
• Plan and implement network deployment, enhancements, and upgrades
• Coordinated with third-party security information and event management (SIEM) providers to maintain protections and predict threats.
• Maintained strict adherence to regulations such as payment card industry (PCI) data security standard.
• Worked with business partners to balance requirements, security and risk reduction.

• Analyzing LAN/WAN to determine network performance problems and providing solutions to EIGRP routing protocol challenges
• Ensuring day-to-day Network Management i.e., configuring, Monitoring and Troubleshoot of Cisco SDWAN and SDA Network
• Providing first level technical and non-technical support to over six teams, resolving both hardware and software connectivity issues
• Configuring and installing various network devices and services (e.g., routers, switches, firewalls, load balancers, VPN, QOS)
• Performing network maintenance and system upgrades including service packs, patches, hotfixes, and security configurations.
• Monitoring performance and ensuring link availability and reliability using Solar wind monitoring tool.
• Created VPN infrastructure and allowed for secure remote connections.
• Provide daily support for remote VPN connections to internal resources.
• Liaising with vendors and other IT personnel for problem resolution.

• Oversee and manage IT support officers bank wide.
• Provide support for in-house and third-party software/hardware, including upgrades and patches
• Maintain computer systems and troubleshoot networks (Installing and configuring computer hardware operating systems and applications)
• Manage/supervise vendor-based projects at branch (regional) level
• Monitors the effectiveness of the team against SLA/KPI‟s, driving through change as needed to deliver continual service improvement
• Ensure operational procedures and practices are well defined, documented and consistently applied
• Ensures support teams are skilled, trained and developed to enable them to deliver high quality service and support.

• Ensuring that incidents and requests are managed according to agreed procedures and ensure that documentation of all supported components is available.
• Network monitoring and reporting for link optimization to avoid downtime in branches using enterprise solutions e.g. SolarWinds
• Monitored employee and customer interactions to assess quality of service.
• Made decisions affecting daily operations such as overseeing system repairs and inventory management.
• Coordinated IT projects and deployments ; which includes implementing new software and technologies
• Built and maintained successful relationships with service providers, partners, users, and customers
• Oversee implementation and deployment of system security features such as Two Factor Authentication and network access control to over 200 branches.
• Coordinated hardware and software repair processes with external vendors.