Senior Network and Systems Administrator – Firewall
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Job Description
Senior network and systems administrator securing enterprise infrastructure for a Manila-based company. Managing firewalls, hybrid cloud systems, automation, monitoring, and escalated technical issues.
Responsibilities:
- Serve as senior escalation point for complex customer and help desk issues, ensuring timely resolution
- Lead infrastructure monitoring and report on health, traffic, performance, vulnerabilities, and trends to management
- Evaluate and optimize existing systems to improve efficiency, scalability, and reliability
- Design and document workflows, system diagrams, and operational processes for IT and business alignment
- Architect solutions balancing innovation with financial and resource constraints
- Plan and implement enterprise network security, including firewall management, VPN configuration, host security, file permissions, and system integrity
- Manage user lifecycle, including provisioning, de-provisioning, and access control across systems
- Provide technical guidance to help desk, NOC, and Engineering teams
- Lead onboarding and IT orientation for new employees
- Research, test, and implement new technologies
- Quote and scope client hardware requirements and projects
- Creatively solve problems within available financial resources
Requirements:
- Degree in a related field or equivalent applicable work experience
- 5+ years of progressive experience in network and systems administration, including help desk escalation and infrastructure support
- Experience with Sophos, Cisco Meraki, Fortinet, and Unify firewalls
- Expert knowledge of Active Directory, enterprise domain controllers, group policy management, Microsoft Azure, DNS, Microsoft integrations, Office 365, and hybrid cloud environments
- Deep understanding of network security, firewalls, VPNs, routers, WAN/LAN, ACL, intrusion detection/prevention, and endpoint protection
- Extensive experience with enterprise-scale software deployments, patch management, and automation frameworks
- High proficiency in PC systems, enterprise applications, and IT management tools
- Excellent communication skills for translating technical issues into business impact
- Commitment to continuous learning and emerging technologies
- Preferably knowledge of Microsoft 365 Admin Center, Exchange, Azure, Identity, RMM tools, backup tools, patching tools, network monitoring tools, and AI tools
- Advantageous: SolArc experience, advanced PowerShell automation, IT certifications, and hospitality industry experience
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