Abdulmujeeb Umar
@abdulmujeebumar
Senior Network & IT Infrastructure Lead securing and optimizing enterprise systems.
NigeriaWhat I'm looking for
I’m a Senior Network & IT Infrastructure Lead with 8+ years of experience designing, securing, and optimizing enterprise and distributed systems. I’ve built high-availability networks, led security enforcement, and managed remote infrastructure with a focus on resilient, scalable architecture.
In my current role, I lead network and IT infrastructure strategy, act as the primary escalation point for infrastructure decisions, and drive modernization across enterprise systems. Previously, I maintained enterprise infrastructure with 99.9% uptime, improved WAN performance by 30%, delivered zero-downtime firewall migrations, and strengthened compliance through SIEM monitoring and threat response.
Experience
Work history, roles, and key accomplishments
Senior Network & IT Infrastructure Lead
Koboweb Greentech Group
Jan 2026 - Present (4 months)
Led enterprise network and IT infrastructure strategy, designing scalable, secure, and resilient systems and acting as the primary escalation point for infrastructure decisions. Drove modernization initiatives and oversaw security enforcement and system integration.
Senior Network & Security Administrator
Olam Nigeria Ltd.
Jan 2023 - Jan 2026 (3 years)
Maintained enterprise infrastructure with 99.9% uptime by deploying FortiGate, CrowdStrike, and Zscaler, and leading SIEM monitoring with threat response. Supported secure connectivity for SAP, SharePoint, and cloud platforms and contributed to audit/compliance efforts.
Network Administrator / NOC Manager
Dotmac Fiber Ltd.
Apr 2018 - Dec 2022 (4 years 8 months)
Managed ISP backbone infrastructure and optimized routing to improve performance by 30%. Led NOC operations to reduce downtime, designed redundant network architecture, and implemented QoS policies to improve bandwidth management.
Education
Degrees, certifications, and relevant coursework
National Open University of Nigeria
Bachelor of Science in Computer Science, Computer Science
Earned a B.Sc. in Computer Science from the National Open University of Nigeria.
Kaduna Polytechnic
National Diploma
Earned a National Diploma from Kaduna Polytechnic.
National Open University of Nigeria
Bachelor of Science, Computer Science
Earned a B.Sc. in Computer Science from the National Open University of Nigeria.
Availability
Location
NigeriaAuthorized to work in
Job categories
Skills
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