Senior IT Infrastructure Support Specialist

Arbcentrix Corporation; Taguig; Hybrid; PHP 600,000 - 1,000,000; Full time

Job summary

Arbcentrix Corporation is seeking a Tier 2 IT Infrastructure Support Specialist to handle escalated technical issues across servers, networks, cloud platforms, and security tools. Located in Bicutan, Taguig, the role offers a hybrid schedule (4x onsite, 1x WFH) with night shifts.

You will own complex incidents, mentor Tier 1 staff, and ensure reliable IT environments while working with Windows Server, AD, VMware, Azure, MS 365, SonicWall, SentinelOne, ERP configurations, and PowerShell

Qualifications

• 4+ years of IT support or systems administration experience.
• Strong knowledge of Windows Server and Active Directory.
• Working knowledge of VMware.
• Practical experience with Azure and Microsoft 365.
• Experience with SonicWall or similar firewall technologies.
• Familiarity with SentinelOne or other EDR tools.
• Basic PowerShell or scripting experience.
• Exposure to ERP systems and configuration.
• Comfortable using AI tools for troubleshooting and documentation.

Responsibilities

• Troubleshoot escalated server, network, security, and system issues.
• Administer Windows Server and Active Directory, including users, groups, GPOs, and basic server maintenance.
• Perform VMware tasks such as VM provisioning, snapshots, and basic resource management.
• Support Azure and Microsoft 365 environments, including user provisioning, licensing, and basic configurations.
• Configure and troubleshoot SonicWall or similar firewalls, VPNs, and basic network segmentation.
• Monitor and respond to security alerts using SentinelOne or similar EDR tools.
• Manage technical issues from initial troubleshooting through resolution and escalate complex issues when necessary.
• Perform basic ERP configuration, including user roles, workflow adjustments, and integration troubleshooting.
• Create basic PowerShell scripts and automation for repetitive tasks.
• Use AI tools to support troubleshooting, scripting, and documentation while validating outputs before implementation.
• Provide technical guidance and mentoring to Tier 1 technicians.
• Create and maintain technical documentation and troubleshooting guides.

Tools

Windows Server

Active Directory

VMware

Azure

Microsoft 365

SonicWall

SentinelOne

PowerShell

Job description

Location: Bicutan, Taguig

Work Arrangement: Hybrid (4x a week ONSITE, 1x a week WFH)

Schedule: Nightshift

Arbcentrix is looking for a Tier 2 IT Infrastructure Support Specialist to handle escalated technical issues and provide hands‑on support across systems, servers, networks, cloud platforms, and security tools.

You will take ownership of more complex technical issues, support Tier 1 technicians, and help maintain reliable and secure IT environments.

What You’ll Do

• Troubleshoot escalated server, network, security, and system issues.




• Administer Windows Server and Active Directory, including users, groups, GPOs, and basic server maintenance.




• Perform VMware tasks such as VM provisioning, snapshots, and basic resource management.




• Support Azure and Microsoft 365 environments, including user provisioning, licensing, and basic configurations.




• Configure and troubleshoot SonicWall or similar firewalls, VPNs, and basic network segmentation.




• Monitor and respond to security alerts using SentinelOne or similar EDR tools.




• Manage technical issues from initial troubleshooting through resolution and escalate complex issues when necessary.




• Perform basic ERP configuration, including user roles, workflow adjustments, and integration troubleshooting.




• Create basic PowerShell scripts and automation for repetitive tasks.




• Use AI tools to support troubleshooting, scripting, and documentation while validating outputs before implementation.




• Provide technical guidance and mentoring to Tier 1 technicians.




• Create and maintain technical documentation and troubleshooting guides.

What We’re Looking For

• 4+ years of IT support or systems administration experience




• Strong knowledge of Windows Server and Active Directory




• Working knowledge of VMware




• Practical experience with Azure and Microsoft 365




• Experience with SonicWall or similar firewall technologies




• Familiarity with SentinelOne or other EDR tools




• Basic PowerShell or scripting experience




• Exposure to ERP systems and configuration




• Comfortable using AI tools for troubleshooting and documentation




• Strong problem‑solving and technical communication skills




• Able to work independently and take ownership of technical issues

Preferred Certifications

• CompTIA Network+




• CompTIA Security+




• Microsoft AZ-104




• Microsoft MS-102




• SonicWall SNSA

Why Join Arbcentrix?

• Work on a broad range of technologies across infrastructure, cloud, security, virtualization, and business systems.




• Take on more advanced technical responsibilities beyond traditional help desk support.




• Develop your systems administration and troubleshooting skills through hands‑on technical work.




• Support and mentor junior IT professionals while building your leadership skills.




• Explore automation and AI‑powered tools to improve technical workflows and documentation.




• Be part of a team where ownership and problem‑solving are valued.