JOBS

Tech(IT) Job Vacancy at TeKnowledge— IT Systems Administrator Lead

July 18, 2026 3 Min Read

Are you an experienced Lead Administrator looking to advance your career with a global technology company? If so, this could be the opportunity you’ve been waiting for. TeKnowledge is inviting applications from suitably qualified candidates for the position of a IT Systems Administrator Lead. If you are interested in this job opening you can continue on this page for more information on the job description and for the official online recruitment channel to begin application.

Applications are invited for the position below:

Title: IT Systems Administrator Lead

Job ID: 17413
Location: Victoria Island, Lagos

Overview

We’re seeking an IT Systems Administrator Lead to lead and deliver complex security engagements for global enterprise clients across fintech, government, and critical infrastructure.
In this role, you will design and execute advanced security assessments, red team operations, and threat-informed audits.

Responsibilities

Maintain and optimize all aspects of IT infrastructure to ensure uninterrupted operation.
Implement and maintain infrastructure solutions, including servers, storage systems, virtualization technologies, and cloud services.
Establish and enforce security policies and procedures to safeguard company data and resources.
Perform regular system updates, backups, and implement disaster recovery procedures to ensure business continuity.
Collaborate with other teams to provide technical support and resolve infrastructure-related issues.
Ensure compliance with IT policies, standards, and best practices.
Participate in IT audits, such as ISO and SOC audits.
Plan and implement infrastructure upgrades and capacity expansions to meet future business requirements.
Stay current with industry trends and emerging technologies to recommend and implement innovative solutions.

Qualifications

Bachelor’s Degree in Computer Science, Information Systems, Engineering, or other related discipline.
5+ years of experience in managing IT infrastructure in a large corporate environment.
Candidate should have strong hands-on experience managing Hyper-V hosts, virtual machines, virtual switches, storage, clustering, backups, and performance monitoring. They should also understand Windows Server, Active Directory, networking, PowerShell automation, patching, troubleshooting, and disaster recovery for virtualized environments.
Infrastructure & Security certification or relevant experience/knowledge is a requirement.
Other security certifications—CompTIA Security+, CEH, CISSP, GCIH, OSCP, or related—are an advantage but not required.
ITIL v4 or ISO27001 experience is an advantage but not required.
Proficient in server administration, storage management, virtualization technologies, and cloud services (large-scale server infrastructures 500+ servers Windows/Linux).
Proficient in client OS administration (e.g., Windows/MacOS/Linux), MDM solutions, cloud infrastructure (e.g., Azure/AWS/Google), and modern workplace technologies (e.g., Microsoft365/Google Workspace).
Strong understanding of networking concepts, infrastructure security, and disaster recovery (multi-site / multi-region topologies with 1000+ network devices).
Experience with IT service management practices and tools.
Ability and experience to troubleshoot complex infrastructure issues and perform root cause analysis.
Certification in relevant technologies (e.g., Microsoft, VMware, Cisco, PaloAlto) is a plus.
Experience with DevOps Infrastructure Automation is a plus.
Excellent communication and leadership skills.
Self-motivated, detail-oriented, and able to work effectively in a team environment.
Willingness to work on shifts, including weekend shifts (some shifts may be accommodated to employee preference).
Must have completed the compulsory 1-year NYSC or have an exemption certificate.
A valid and up to date National Identity Card/NIMC slip is required upon commencement of this role.