Senior IT Infrastructure & Security Engineer

PT ESSA Industries Indonesia Tbk.; Jakarta Pusat; On-site; IDR 700,000,000 - 900,000,000; Full time

Job summary

PT ESSA Industries Indonesia Tbk. is hiring an IT Officer to support secure, high‑performing IT infrastructure across the ESSA Group. The role focuses on hands‑on operations spanning cloud, network, security, virtualization, Microsoft 365, and multi‑site connectivity.

The position requires a Bachelor’s degree in IT/CS/CE and extensive experience in Azure, firewalls, and enterprise security. It offers on‑site work at the Head Office in South Jakarta and opportunities to collaborate across

Qualifications

• Bachelor’s Degree in IT, Computer Science, Computer Engineering, or related field.
• Minimum 8 years of hands‑on experience in IT Infrastructure, Network, System Administration, Cloud, or IT Security.
• Minimum 5 years of hands‑on experience with Microsoft Azure and enterprise firewall administration, preferably Palo Alto Networks.
• Strong hands‑on skills in Azure VMs, VNet, NSG, Storage, Backup/Recovery, Azure Monitor, and hybrid connectivity.
• Experience in Palo Alto Firewall, including security policies, NAT, routing, IPsec/SSL VPN, logging, and troubleshooting.
• Strong knowledge of Cisco networking, Ruckus Wireless, Hyper‑V, LAN/WAN, VLAN, routing, switching, and VPN.
• Hands‑on experience with Microsoft 365, Entra ID, Active Directory, Windows Server, and identity integration.
• Experience managing SentinelOne EDR, endpoint security, infrastructure hardening, patching, and vulnerability remediation.
• Strong capability in backup, disaster recovery, RTO/RPO, infrastructure monitoring, SIEM/SOC integration, and end‑to‑end troubleshooting.
• Preferred certifications: AZ‑104, Palo Alto, CCNA, Microsoft 365, or Microsoft Security.
• Fluency in English, both written and spoken.
• Strong communication and coordination skills, with the ability to work effectively across multiple departments and with external agencies or vendors.

Responsibilities

• Administer and troubleshoot Azure, Hyper‑V, Windows Server, and hybrid/multi‑cloud infrastructure.
• Manage Palo Alto Firewalls, Cisco networks, Ruckus Wireless, VPN, and multi‑site connectivity.
• Administer Microsoft 365, Active Directory, and Entra ID, including access and authentication integration.
• Manage SentinelOne EDR, endpoint security policies, alert investigation, and remediation.
• Perform infrastructure security hardening, patching, access control, and vulnerability remediation.
• Execute and validate backup, restore, replication, and disaster recovery procedures.
• Monitor infrastructure performance, security logs, alerts, and integration with SIEM/SOC platforms.
• Troubleshoot complex incidents across cloud, network, firewall, VPN, virtualization, identity, endpoint, and M365 environments.
• Maintain technical documentation, network diagrams, configurations, SOPs, and infrastructure inventories.
• Coordinate with vendors and service providers for escalations and critical infrastructure support.

Skills

Azure

Microsoft 365

Active Directory

Entra ID

Windows Server

VMware/Hyper-V

Networking

Security

Firewalls

SIEM/SOC

Education

Bachelor’s Degree in IT/CS/CE

8+ years IT Infra experience

Tools

Palo Alto Firewall

Cisco Networking

Ruckus Wireless

Job description

PT ESSA Industries Indonesia Tbk. is hiring an IT Officer to support secure, high‑performing IT infrastructure across the ESSA Group. The role focuses on hands‑on operations spanning cloud, network, security, virtualization, Microsoft 365, and multi‑site connectivity.

The position requires a Bachelor’s degree in IT/CS/CE and extensive experience in Azure, firewalls, and enterprise security. It offers on‑site work at the Head Office in South Jakarta and opportunities to collaborate across