ANTINA PTE. LTD. Hiring! Full Time Senior IT Infrastructure Engineer (Network - Systems) in South (Singapore), Earn up to SGD 6,000 - Ricebowl

Job Duties:

• Design, implement, and support end-to-end on-premises IT infrastructure (network, systems, and cloud environments)
• Implement, operate, and troubleshoot enterprise network infrastructure (routing, switching, firewalls, VPN, NAC, load balancers, wired/wireless networks).
• Deploy, configure, and support Windows Server, Linux, VMware/Hyper-V, and storage systems.
• Support Microsoft 365 and hybrid identity environments (Entra ID, Intune, Exchange, Teams).
• Perform troubleshooting and root cause analysis (RCA) for complex infrastructure issues.
• Implement security controls including segmentation, hardening, patching, and vulnerability management.
• Manage monitoring platforms (Zabbix, Grafana, PRTG, Nagios) including performance tuning and alert optimisation.
• Support ITSM processes (incident, problem, change) and participate in on-call operations
• Maintain IT asset inventory, lifecycle management, and technical documentation standards
• Manage vendors, SLAs, and infrastructure-related projects
• Provide L1/L2 support for end-user computing (Windows workstations and enterprise applications).

Job Requirements:

• Degree in IT, Computer Science, or related field.
• 8+ years of experience in IT infrastructure and/or network engineering.
• Strong hands-on experience with Palo Alto firewalls (policy management, VPN, NAT, troubleshooting) is required.
• Strong hands-on experience in the following areas: Networking: routing, switching, firewalls, VPN, VLAN, NAC / Systems: Windows Server, Linux, VMware / Hyper-V / Enterprise technologies: Cisco, Aruba, Fortinet, F5, Microsoft 365, SIEM, PAM / Monitoring & operations: Zabbix, Grafana, PRTG, Nagios, ITSM tools, backup solutions (e.g. Veeam)
• Strong troubleshooting skills with ability to perform root cause analysis (RCA).
• Experience in system hardening, patch management, and security operations.
• Good communication and stakeholder management skills.
• Experience in regulated environments (finance, telecom, technology) is an advantage.