Network Security Engineer

Department: IT Infrastructure / Network & Security

Level: Intermediate / Mid-Level

Industry: Manufacturing

Experience:

Minimum 2 years

Work Location:

Cikande, Banten

The Network Security Engineer is responsible for managing, implementing, monitoring, maintaining, and troubleshooting network and network security infrastructure to ensure the security, availability, reliability, and performance of IT infrastructure supporting business operations and manufacturing activities.

The role is also responsible for supporting and executing network and security projects, including planning, implementation, migration, testing, commissioning, documentation, and handover.

• Manage and configure Palo Alto Networks Firewall within an enterprise environment.
• Configure and maintain firewall security policies, NAT, security profiles, application control, URL filtering, VPN, routing, and security objects.
• Monitor firewall traffic, security logs, threat events, and network security incidents.
• Review and optimize firewall policies to improve security and network performance.
• Troubleshoot firewall, VPN, connectivity, and security-related issues.
• Support network segmentation between user, server, production, guest, and other network environments.
• Perform firewall configuration backup and support high-availability environments where applicable.

• Manage and configure Aruba network infrastructure, particularly Aruba switches.
• Configure and troubleshoot VLANs, trunking, STP, LACP, routing, and network connectivity.
• Monitor network availability, performance, bandwidth utilization, and device health.
• Perform preventive maintenance and configuration backup for network devices.
• Ensure network infrastructure meets operational, security, and availability requirements.

• Participate in end-to-end network and security projects, from requirement gathering and planning through implementation, testing, commissioning, and handover.
• Perform network and security infrastructure deployment, migration, upgrade, and expansion.
• Conduct device installation, configuration, testing, troubleshooting, and commissioning.
• Prepare implementation plans, migration plans, test scenarios, rollback plans, and technical documentation.
• Coordinate with project teams, vendors, contractors, and internal stakeholders.
• Ensure project implementation is completed according to technical requirements, security standards, project timelines, and change management procedures.

• Support network infrastructure used by manufacturing and production environments.
• Maintain network connectivity between office areas, servers/data centers, warehouses, production areas, and supporting facilities.
• Support network requirements for business applications and systems used within the manufacturing environment.
• Troubleshoot network issues that may impact production or business operations.
• Coordinate with IT, Engineering, Maintenance, Production, and external vendors to resolve technical issues.
• Apply proper change control and risk mitigation when performing changes within production environments.
• Respond to network and security incidents based on priority and SLA requirements.
• Perform root cause analysis for network and security issues.
• Analyze firewall logs, network logs, and packet captures to identify and resolve issues.
• Develop corrective and preventive actions to minimize recurring incidents.
• Escalate technical issues to vendors or technology principals when required.
• Provide technical support during critical network or production incidents.

• Monitor network devices, firewalls, VPN connections, network availability, bandwidth utilization, and security events.
• Perform regular preventive maintenance and health checks.
• Perform firmware and software upgrades according to change management procedures.
• Maintain network and security configuration backups.
• Support network recovery and troubleshooting activities when required.

• Maintain network topology diagrams and network security documentation.
• Maintain firewall configuration and network device documentation.
• Prepare project implementation, testing, maintenance, and handover documentation.
• Prepare incident and troubleshooting reports.
• Ensure all network and security changes are properly documented.
• Maintain accurate records of network…