OGHENEKENO HILKIAH OKULA

Designed and delivered scalable multi-site WAN architectures using OSPF, EIGRP, and BGP, implementing MPLS L3VPN VRFs and MP-BGP for multi-tenant route distribution.

Implemented hub-and-spoke DMVPN (NHRP, GRE) and GRE+IPsec tunnels to ensure secure branch connectivity, validating routing with EIGRP across overlays.

Produced HLDs/LLDs, topology diagrams, routing policies, and operational runbooks, documenting PE/CE interactions and provider handoffs for streamlined operations.

Automated configuration deployment and validation using Python, Ansible, and REST APIs, integrating with CI/CD pipelines to achieve consistent, error-free rollouts.

Built Python and Ansible automation scripts for device provisioning, config drift detection, and automated validation, integrating with version-controlled repositories to enhance network reliability.

Implemented API-driven device interactions (REST/NETCONF/RESTCONF) and model-driven telemetry, improving network visibility and assurance.

Designed enterprise WLAN with secure employee access and segmented guest networks, integrating with campus LAN and AAA via Cisco ISE.

Designed hybrid connectivity patterns and AWS/GCP VPC architectures, implementing subnet segmentation, route tables, and secure site-to-site VPNs to ensure end-to-end routing and security.

Managed and troubleshot Microsoft 365 migration issues (Hybrid, Gmail, Yahoo, Hotmail to Microsoft 365) for companies and organizations moving to the cloud.

Configured domains and email security services using SPF, DMARC, and DKIM, protecting 150+ business enterprises from malicious actors and spoofing.

Provided global technical support for Microsoft 365 Online Services (Exchange Online, Teams, OneDrive, SharePoint, Outlook, Entra ID) via multiple channels, maintaining 95%+ CSAT.

Resolved over 90% of enterprise support incidents within SLA, minimizing operational downtime and addressing complex administrator knowledge gaps.

Delivered proactive recommendations on Conditional Access, MFA, IAM, and Zero Trust practices, improving security posture for 100+ businesses and preventing recurring issues.

Designed, implemented, and managed IAM solutions, including SSO, MFA, and RBAC for multiple companies.

Identified and remediated security, identity, and device compliance issues across Microsoft 365 tenants.

Authored and maintained comprehensive technical documentation for support procedures and solutions, published as an open-source ongoing project on GitHub.

Deployed and supported productivity software (Email, Microsoft Teams, Microsoft Office, Task Tracking) to ensure adequate collaboration amongst workers.

Configured and maintained office wireless networking systems to ensure onsite users stay connected to productivity suites.

Provisioned and supported desktop and mobile operating systems (Microsoft Windows, macOS, iOS, Android) for Kasi-owned and BYOD devices.

Installed and configured data center switches, routers, and servers for Point of Presence in the Lekki Data Center.

Designed and created comprehensive infrastructure solutions using advanced network architecture and engineering principles, prioritizing operational stability, robustness, resilience, and high availability.

Architected Zadara Edge Cloud Infrastructure-as-a-Service (IaaS) solutions encompassing compute, storage, and networking components tailored to customer requirements and SLA commitments.

Developed infrastructure deployment strategies and technical specifications to ensure seamless integration with customer environments and optimal service delivery across distributed edge locations.

Deployed and commissioned enterprise-grade edge IaaS hardware infrastructure, including HP ProLiant servers, Cisco 40G/100G switches, and Fortinet NGFWs.

Executed hardware installation, configuration, and testing of data center infrastructure components across multiple deployment trips to the Eko Atlantic region.

Configured Cisco switching architecture (40G/100G interconnects) and Fortinet firewall security policies to support multi-tenant isolation, traffic segmentation, and enterprise-grade security.

Implemented infrastructure monitoring and performance validation protocols to verify compliance with agreed SLAs, validate high-availability configurations, and identify optimization opportunities.

Managed and optimized Microsoft 365 tenants across customer organizations, ensuring efficient resource utilization, cost optimization, and alignment with organizational policies and compliance requirements.

Provided global technical support for Microsoft 365 Online Services (Exchange Online, Teams, OneDrive, SharePoint, Outlook, Entra ID) through multiple support channels, ensuring timely issue resolution and customer success.

Resolved over 95% of complex M365 support tickets involving Exchange Online configuration and troubleshooting, Entra ID identity and access management, Microsoft Purview compliance, and hybrid connectivity.

Diagnosed and resolved networking and security issues for global Microsoft 365 customers, maintaining 95%+ CSAT through effective communication, rapid troubleshooting, and resolution within strict SLA parameters (e.g., 1-minute initial contact response time).

Managed escalations and complex technical problems requiring deep knowledge of M365 architecture, service dependencies, and integration patterns across cloud and hybrid environments.

Streamlined email and domain configurations using SPF, DMARC, and DKIM protocols, improving operational continuity and email security posture for 150+ businesses across North America.

Configured and optimized domain settings, DNS records, and email routing to ensure deliverability, security compliance, and seamless mailbox migration for enterprise customers.

Implemented email security best practices to protect customer domains from spoofing, phishing, and malicious actors.

Supported and maintained enterprise-grade network hardware, including routers, switches, and firewalls across regional branch infrastructure.

Worked as L1 network support technician for emergency response duties and network event monitoring, using industry-standard platforms (Uptime Robot, Zabbix) for rapid incident detection and resolution.

Conducted proactive network performance monitoring and implemented hardware upgrades to prevent downtime and optimize infrastructure reliability.

Negotiated and managed ISP Service Level Agreements (SLAs), achieving over $10,000 in downtime compensation through contractual enforcement.

Executed warranty claims for HPE Switches, modules, and network devices, resulting in over $100,000 in cost recoveries for branch infrastructure investments.

Managed and coordinated data center inventory and asset lifecycle management for regional branch operations, tracking procurement through retirement cycles.

Coordinated and implemented multiple deployments of computer desktops and laptop systems for branch and remote users, handling the full deployment lifecycle.

Provided L1-L3 technical support to end users, addressing infrastructure-related issues and ensuring timely resolutions to minimize business impact.

Designed and implemented enterprise-grade network architecture including LLD and HLD documentation, encompassing routing protocols, switching infrastructure, VLAN segmentation, and wireless access point deployment across campus facilities.

Architected and deployed multi-vendor network solutions using Cisco IOS-based routers and switches, Ubiquiti UniFi wireless access points, and MikroTik RouterOS devices for optimal cost-efficiency and operational flexibility across diverse network segments.

Configured and optimized Cisco routers and switches for VLAN segmentation, inter-VLAN routing, and network access control to support 1,000+ concurrent users while maintaining network isolation and security policies.

Implemented Quality of Service (QoS) policies and traffic management to prioritize CBT traffic and educational applications, ensuring optimal bandwidth allocation and reduced latency for critical services.

Configured and maintained computer labs and Thin Clients infrastructure supporting 1,000+ students and staff, ensuring reliable access to educational resources and network services.

Managed endpoint devices and system configurations to optimize performance and standardize deployment across branch locations.

Served as principal point of contact for external IT contractors, ISP WAN connectivity, and multi-vendor coordination (Cisco, MikroTik, Ubiquiti).

Taught and mentored 100+ junior high school students on Scratch programming as part of educational outreach initiatives.