Senior IT Infrastructure Engineer – Cybersecurity

Arbcentrix Corporation; Taguig; Hybrid; PHP 1,800,000 - 2,400,000; Full time

Job summary

Arbcentrix Corporation seeks a Senior IT Systems/Network Administrator with a cybersecurity focus to manage and secure IT infrastructure across systems, networks, cloud environments, cybersecurity, and ERP platforms. This hands-on role requires troubleshooting, supporting multiple client environments, and driving improvements through automation and modern technology.

You’ll administer Windows Server, Active Directory, and VMware; manage Azure environments; configure SonicWall firewalls; monitor

Qualifications

• 10+ years of IT experience in systems/network administration or cybersecurity.
• Hands-on experience with Windows Server and Active Directory.
• Strong VMware vSphere/ESXi experience.
• Experience managing Microsoft Azure environments.
• Experience configuring SonicWall or similar firewalls.
• Experience with SentinelOne or comparable EDR solutions.
• Experience with IT ticketing systems and SLAs.
• Experience configuring and troubleshooting ERP systems (NetSuite, SAP, Dynamics, Odoo, or similar).
• Scripting/automation using PowerShell, Python, Bash, or similar tools.
• Experience building AI-assisted automations or workflows.
• Familiarity with backup, disaster recovery, and business continuity.
• Knowledge of ISO 27001, NIST, SOC 2 or similar compliance frameworks.

Responsibilities

• Administer Windows Server, Active Directory, and VMware environments.
• Manage Microsoft Azure environments, including VMs, networking, and identity/M365 integration.
• Configure and maintain SonicWall firewalls, VPNs, site-to-site tunnels, and security rules.
• Monitor and respond to security incidents using SentinelOne or similar EDR tools.
• Manage patching and endpoint security.
• Resolve technical support requests while meeting SLA targets.
• Support vulnerability assessments and cybersecurity compliance initiatives.
• Configure and troubleshoot ERP systems, including integrations, workflows, and user access.
• Develop scripts and automation using PowerShell, Python, Bash, or similar tools.
• Build AI-assisted workflows to automate IT tasks such as ticket triage, alert analysis, reporting, and documentation.
• Use AI tools to support troubleshooting, scripting, documentation, and reporting while validating outputs.
• Support multiple client environments and prioritize competing technical requirements.
• Maintain technical documentation, system configurations, and incident records.
• Participate in an on-call rotation for critical issues.

Skills

Windows Server

Active Directory

VMware vSphere

Microsoft Azure

SonicWall Firewalls

EDR (SentinelOne)

Patching & Endpoint Security

Scripting (PowerShell)

Scripting (Python)

Scripting (Bash)

ERP Systems

Automation & AI Workflows

Backup & DR

ISO 27001/NIST/SOC 2

On-call Support

Tools

PowerShell

Python

Bash

Job description

Location: Bicutan, Taguig

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

Shift Schedule: Nightshift

Arbcentrix is looking for an experienced Senior IT Systems/Network Administrator with a Cybersecurity focus to manage and secure IT infrastructure across systems, networks, cloud environments, cybersecurity, and ERP platforms.

This is a hands‑on role for an experienced IT professional who can independently troubleshoot complex issues, support multiple client environments, and drive improvements through automation and modern technology.

What You’ll Do

• Administer Windows Server, Active Directory, and VMware environments.

• Manage Microsoft Azure environments, including VMs, networking, and identity/M365 integration.

• Configure and maintain SonicWall firewalls, VPNs, site‑to‑site tunnels, and security rules.

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

• Manage patching and endpoint security.

• Resolve technical support requests while meeting established SLA targets.

• Support vulnerability assessments and cybersecurity compliance initiatives.

• Configure and troubleshoot ERP systems, including integrations, workflows, and user access.

• Develop scripts and automation using PowerShell, Python, Bash, or similar tools.

• Build AI‑assisted workflows to automate IT tasks such as ticket triage, alert analysis, reporting, and documentation.

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

• Support multiple client environments and prioritize competing technical requirements.

• Maintain technical documentation, system configurations, and incident records.

• Participate in an on‑call rotation for critical issues.

What We’re Looking For

• 10 years of IT experience, with a strong background in systems administration, network administration, and/or cybersecurity.

• Hands‑on experience with Windows Server and Active Directory.

• Strong experience with VMware vSphere/ESXi.

• Experience managing Microsoft Azure environments.

• Hands‑on experience configuring SonicWall or similar firewalls.

• Experience with SentinelOne or comparable EDR solutions.

• Experience working with IT ticketing systems and SLAs.

• Experience configuring and troubleshooting ERP systems such as NetSuite, SAP, Dynamics, Odoo, or similar.

• Scripting and automation experience using PowerShell, Python, Bash, or similar tools.

• Experience building AI‑assisted automations or workflows.

• Familiarity with backup, disaster recovery, and business continuity.

• Knowledge of ISO 27001, NIST, SOC 2, or similar compliance frameworks is an advantage.

• Strong troubleshooting, documentation, communication, and prioritization skills.

Preferred Certifications

• CompTIA Security+

• CompTIA Network+

• Microsoft AZ-104 or MS-102

• Relevant ERP certifications

• CISSP or CySA+

Why Join Arbcentrix?

• Work across multiple IT disciplines including infrastructure, cloud, networking, cybersecurity, ERP, and automation.

• Handle complex technical environments supporting multiple clients and technologies.

• Strengthen your cybersecurity expertise through hands‑on security and infrastructure responsibilities.

• Build AI and automation solutions that improve day‑to‑day IT operations.

• Take ownership of critical systems and contribute to technical improvements across the organization.

• Apply your experience in a broad, hands‑on role with opportunities to work across different technologies.