Systems Administration-Network & Cybersecurity

Job Title:

Senior IT Infrastructure & Cybersecurity Administrator Job Summary

We are seeking an experienced Senior IT Infrastructure & Cybersecurity Administrator to manage, maintain, and secure the organization’s IT infrastructure, including servers, networks, virtualization platforms, cloud services, and cybersecurity solutions. The ideal candidate will have strong hands‑on experience in IT infrastructure and network administration, combined with practical cybersecurity expertise in security monitoring, incident investigation, vulnerability management, and security hardening.

• Minimum 8 years of experience in IT Infrastructure and Network Administration.
• At least 2–3 years of hands‑on experience in Cybersecurity.
• Proven experience managing enterprise IT infrastructure, networks, and security technologies.

• Bachelor's degree in information technology, Computer Science, Cybersecurity, Computer Engineering, or a related field.

• Strong experience in Windows Server administration
  .
• Administration of Active Directory, DNS, DHCP, and Group Policy
  .
• Microsoft 365 administration and support
  .
• Experience with VMware or Hyper‑V.
• Administration and monitoring of backup and disaster recovery solutions
  .
• Patch management and system updates.
• System performance monitoring and troubleshooting.

• Strong knowledge of switching and routing fundamentals
  .
• Experience with VLANs, network configuration, and troubleshooting
  .
• Firewall administration and management
  .
• VPN configuration, administration, and support
  .
• Wireless network management and troubleshooting.
• Monitoring and maintaining network availability and performance.

• Security monitoring and incident investigation
  .
• Experience with SIEM monitoring, log analysis, and security alert investigation
  .
• Conducting vulnerability scanning and following up on remediation activities.
• Knowledge of endpoint protection and security solutions
  , including EDR/antivirus platforms.
• System and network security hardening
  .
• Identity and access management
  , including user access and privilege controls.
• Basic understanding of cybersecurity frameworks, standards, and compliance requirements.
• Ability to identify, analyze, and respond to cybersecurity threats and incidents.

• Manage and maintain servers, operating systems, virtualization platforms, and Microsoft 365 services.
• Administer and support the organization’s network infrastructure, including switches, routers, firewalls, VPNs, and wireless networks.
• Monitor system and network performance to ensure high availability, reliability, and security.
• Monitor cybersecurity tools and investigate security alerts and potential incidents.
• Perform security log analysis and support incident investigation and response activities.
• Conduct vulnerability assessments and coordinate with relevant teams to ensure timely remediation.
• Implement and maintain system and network security controls, including security hardening and access management.
• Manage backup solutions and support disaster recovery and business continuity activities.
• Perform patch management and ensure systems are updated against known vulnerabilities.
• Troubleshoot and resolve infrastructure, network, system, and cybersecurity incidents.
• Maintain accurate technical documentation, including system configurations, network diagrams, procedures, and incident records.
• Support cybersecurity compliance requirements and participate in security improvement initiatives.
• Work closely with IT and cybersecurity teams to continuously enhance the organization’s infrastructure security and operational resilience.

• Microsoft Certified
• Microsoft Azure Certified
• CCNA
• CompTIA Security+
• Fortinet NSE / FCP
• Microsoft Security Certification
• Other relevant infrastructure or cybersecurity certifications are an advantage.

• Strong analytical and troubleshooting skills.
• Ability to manage multiple infrastructure and security‑related tasks effectively.
• Strong knowledge of IT infrastructure, networking, and cybersecurity principles.
• Ability to investigate and respond to technical and security incidents.
• Good communication and documentation skills.
• Ability to work independently and collaboratively within IT and cybersecurity teams.
• Strong attention to detail and commitment to maintaining secure and reliable IT operations.