Firewall Management:Configure, monitor, and troubleshoot enterprise firewalls (Sophos, Fortinet, SonicWall, Palo Alto, etc.)Maintain security policies, NAT rules, VPNs (Site-to-Site and Remote Access)NAS Administration:Set up, manage, and maintain Network Attached Storage systems (QNAP, Synology, etc.)Configure user access, permissions, and ensure data integrity and backupsWindows Server Administration:Install, configure, and maintain Windows Server OS (2016/2019/2022)Manage Active Directory (AD), DNS, DHCP, Group Policies, Domain Controllers (DC)Troubleshoot user authentication, login issues, and AD replicationCisco Network Devices:Configure and troubleshoot Cisco switches and routersImplement VLANs, routing protocols (OSPF, EIGRP), trucking, and port securityMaintain network diagrams and documentationVoIP & Telephony Systems:Support VoIP and telephony platforms like Avaya IP Office / Cisco Unified Communications / 3CX / Grand stream etc.Configure SIP trunks, extension mappings, IVRs, ring groups, voicemail, and call flowTroubleshoot VoIP-related issues: call drops, registration failures, QoS issuesMonitoring & Troubleshooting:Use tools like PRTG, Nagios, or SolarWinds for infrastructure monitoringRespond promptly to network/system alerts and perform root cause analysisEmergency Support:Be available 24x7 for critical support, emergencies, and planned maintenance windowsParticipate in on-call rotation for after-hours supportDocumentation:Maintain comprehensive and up-to-date documentation of configurations, SOPs, and change logsCommunication:Coordinate with internal teams and vendors for issue resolution and project implementationProvide clear updates to stakeholders in a timely and professional mannerRequired Skills & Qualifications:Education: Bachelors degree in computer science, Information Technology, or related fieldCertifications (Preferred):Cisco CCNA/CCNPMicrosoft MCSA/MCSE (Windows Server)Fortinet NSE or other firewall certificationsExperience: 35 years of relevant hands-on experience in infrastructure and network supportTechnical Proficiency:Strong understanding of Layer 2/3 networkingHands-on experience with managing firewall rules, VPN tunnels, and access policiesExperience managing Active Directory & GPOsFamiliarity with backup solutions and disaster recovery planningSoft Skills:Excellent verbal and written communicationTeam player with a problem-solving attitudeAbility to work under pressure and handle emergencies with calmness and precisionWorking Conditions:May require working outside of regular hours for critical updates, troubleshooting, or emergencies