Senior IT Systems Administrator – 3rd Line Support

Vertere Global Solutions

Makati

On-site

PHP 700,000 - 1,200,000

Full time

5 days ago

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Job summary

Vertere Global Solutions is seeking a skilled IT Infrastructure Engineer to manage enterprise systems and networks. You will handle Level-3 escalations, administer Windows Server, AD, DNS/DHCP, and Group Policy, and oversee Microsoft 365, Azure AD, and Exchange Online environments.

You will ensure robust LAN/WAN connectivity, firewall and VPN management, and drive performance improvements, patching, backups, and disaster recovery planning. Strong documentation and teamwork are essential.

Qualifications

Bachelor's degree in Information Technology, Computer Science, Computer Engineering, or a related field.
At least 3 years of experience in Systems Administration, IT Infrastructure, Systems Engineering, or related technical roles.
Proven experience handling Level 3 technical escalations and complex enterprise infrastructure issues.
Strong hands-on experience in Windows Server administration, Active Directory, Group Policy, DNS, and DHCP.
Solid experience administering Microsoft 365, Microsoft Entra ID (Azure AD), and Exchange Online environments.
Strong knowledge of enterprise networking, including LAN/WAN, routing, switching, firewall management, and VPN technologies.
Experience in server management, infrastructure monitoring, system performance optimization, and patch management.
Knowledge of infrastructure security, access management, backup and recovery, and disaster recovery processes.
Experience in root cause analysis, problem management, and IT infrastructure incident resolution.
Strong analytical, technical documentation, communication, and problem-solving skills.
Microsoft, Cisco, CompTIA, or ITIL certifications are an advantage.

Responsibilities

Manage and maintain enterprise IT infrastructure and systems.
Troubleshoot level-3 escalations and perform critical incident resolution.
Administer Windows Server, AD, DNS, DHCP, and Group Policy.
Oversee Microsoft 365, Azure AD, and Exchange Online configurations.
Ensure network reliability across LAN/WAN, routing, switching, firewall, and VPN.
Monitor performance, apply patches, and optimize infrastructure.
Implement security, access control, backup, and disaster recovery plans.
Document issues, resolutions, and standard operating procedures.
Collaborate with IT and security teams to improve processes.