IT System Administrator

Location: Ologolo, Lekki, Lagos (On-site)
Employment Type: Full-Time
Work Schedule: Monday – Friday | 9:00 AM – 5:00 PM
Salary: ₦250,000 – ₦350,000 Monthly
Experience Level: 2 – 4 Years
Job Summary
We are seeking a proactive and technically skilled IT System Administrator to oversee and maintain the organization's IT infrastructure, systems, and network operations. The ideal candidate will be responsible for ensuring system reliability, data security, hardware and software support, and seamless day-to-day IT operations across the organization.
The successful candidate must possess strong troubleshooting abilities, excellent communication skills, and hands-on experience managing enterprise IT systems in a fast-paced work environment.
Key Responsibilities

• Install, configure, and maintain computer systems, servers, networks, and software applications.
• Monitor and ensure optimal performance of IT infrastructure and network systems.
• Manage user accounts, access permissions, email configurations, and security settings.
• Provide technical support and troubleshooting assistance to staff on hardware, software, and network-related issues.
• Perform routine system updates, backups, and security patches to prevent vulnerabilities.
• Monitor antivirus systems, firewalls, and cybersecurity protocols to safeguard company data.
• Set up and maintain printers, scanners, routers, switches, and other IT equipment.
• Diagnose and resolve system, internet, and connectivity issues promptly.
• Maintain IT asset inventory and documentation for systems and configurations.
• Support cloud-based systems, file-sharing platforms, and remote access tools where applicable.
• Ensure compliance with IT policies, procedures, and data protection standards.
• Coordinate with external vendors and service providers for system maintenance and support.
• Recommend improvements and upgrades to existing IT infrastructure and processes.
• Ensure minimal downtime and business continuity through effective system management.
  

Requirements & Qualifications

• Bachelor's Degree or HND in Computer Science, Information Technology, Computer Engineering, or related discipline.
• Minimum of 2 – 4 years proven experience as an IT System Administrator or similar role.
• Strong knowledge of Windows operating systems, networking, and system administration.
• Experience with routers, switches, firewalls, VPNs, and server management.
• Familiarity with Microsoft 365, cloud platforms, and backup solutions.
• Good understanding of cybersecurity principles and data protection practices.
• Proficiency in troubleshooting hardware, software, and network issues.
• Strong analytical and problem-solving skills.
• Excellent communication and interpersonal abilities.
• Relevant certifications such as CompTIA, CCNA, Microsoft, or related certifications will be an added advantage.
  

Key Competencies

• Technical Support & Troubleshooting
• Network & System Administration
• Cybersecurity Awareness
• Attention to Detail
• Time Management
• Problem Solving
• Team Collaboration
• Communication Skills
  

Benefits

• Competitive salary package
• Career growth and development opportunities
• Professional working environment
• Exposure to modern IT systems and infrastructure
  

How to Apply
Qualified and interested candidates should send their updated CV to:
hiring@mysigma.io
Subject of the mail should be: IT System Administrator – Lekki
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