Manager, Firewall & Load Balancer Administrator

Dah Sing Financial Group; Hong Kong; On-site; HKD 600,000 - 900,000; Full time

Job summary

Dah Sing Financial Group is seeking a Manager, Firewall & Load Balancer Administrator to manage enterprise firewalls across data centers, offices, and branches, and to implement security policies, ACLs, and VPN configurations. You will monitor logs, ensure VPN connectivity, and support secure links between HK and Mainland China branches.

Additionally, you will administer load balancers (F5 BIG-IP) for high availability, perform patching and upgrades, and lead incident, disaster recovery, and

Qualifications

• Bachelor's degree or above in Computer Science, Information Technology, or a related field.
• Minimum of 5-8 years of experience in firewall administration, load balancer management, and infrastructure operations.
• Hands-on experience with Palo Alto, Checkpoint, F5 BIG-IP, VPNs, ACLs, and FireMon for firewall policy management.
• Strong knowledge of patching, system upgrades, capacity planning, and disaster recovery.
• Familiar with audit support, compliance standards, and cross-border data regulations.
• Strong problem-solving and analytical skills.
• Excellent communication and documentation abilities.
• Ability to work independently and collaboratively in a team environment.
• Prior experience working in the banking industry is preferred.
• Please note that only shortlisted candidates will be notified.

Responsibilities

• Manage and maintain enterprise firewalls across data centers, offices, and branches.
• Implement and enforce security policies, ACLs, and VPN configurations.
• Monitor firewall logs and alerts to detect and respond to threats.
• Support secure connectivity between Hong Kong and Mainland China branches.
• Administer load balancing platforms to ensure high availability and performance.
• Configure and optimize load balancing rules, SSL offloading, and traffic distribution.
• Troubleshoot application delivery issues and coordinate with teams.
• Configure SNMP messaging for system monitoring integration.
• Monitor system performance and resource usage for capacity planning.
• Provide annual capacity planning reports covering utilization and growth.
• Perform firmware and software upgrades and patch management.
• Maintain audit documentation and compliance reviews.
• Conduct SAT and user account reviews semi-annually.
• Ensure compliance with cross-border data transmission regulations.
• Setup and maintain DR failover procedures and participate in DR drills.
• Act as first-line incident responder for firewall and load balancer issues.
• Coordinate infrastructure projects involving firewall and load balancer deployments.
• Liaise with vendors for procurement and installation of hardware/software.

Skills

Firewall administration

Load balancer management

VPNs

ACLs

Incident management

Disaster recovery planning

Patch management

Audit/compliance

Technical documentation

Education

Bachelor's degree or above in Computer Science, Information Technology, or a related field

Tools

Palo Alto

Checkpoint

F5 BIG-IP

FireMon

Job description

Manager, Firewall & Load Balancer Administrator

Manage and maintain enterprise firewalls (e.g., Palo Alto, Checkpoint, F5) across data centers, offices, and branches.

Implement and enforce network security policies, access control lists (ACLs), and VPN configurations.

Monitor firewall logs and alerts to detect and respond to potential threats.

Support secure and reliable connectivity between Hong Kong and Mainland China branches.

Load Balancer Management

Administer load balancing platforms (e.g., F5 BIG-IP) to ensure high availability and performance of critical applications.

Configure and optimize load balancing rules, SSL offloading, and traffic distribution.

Troubleshoot application delivery issues and coordinate with application and infrastructure teams.

System Monitoring and Capacity Planning

Configure and support SNMP messaging for system monitoring integration.

Monitor system performance and resource usage to support proactive planning.

Provide annual capacity planning reports covering system utilization and growth forecasts.

Patch and Upgrade

Perform firmware and software upgrades and patch management to address end-of-support and security vulnerabilities.

Upgrade any legacy End-of-Support (EOS) hardware and software components to ensure continued vendor support and system reliability

Governance & Reporting

Maintain documentation for audits and compliance reviews.

Conduct System Acceptance Testing (SAT) and user account reviews on a semi-annual basis.

Ensure compliance with cross-border data transmission regulations and internal security standards.

Disaster Recovery & Resilience

Setup and maintain configuration backup to ensure recoverability.

Prepare and maintain system disaster recovery (DR) failover procedures.

Activate and support DR systems during annual DR drills.

Incident & Problem Management

Act as first-line response for firewall and load balancer-related incident resolution efforts, perform root cause analysis, and implement preventive and corrective actions.

Project & Change Management

Coordinate in infrastructure projects involving firewall and load balancer deployments or upgrades.

Liaise with vendors for procurement, installation, support of relevant hardware and software.

Qualifications

Bachelor's degree or above in Computer Science, Information Technology, or a related field.

Minimum of 5-8 years of experience in firewall administration, load balancer management, and infrastructure operations.

Hands-on experience with Palo Alto, Checkpoint, F5 BIG-IP, VPNs, ACLs, and FireMon for firewall policy management.

Strong knowledge of patching, system upgrades, capacity planning, and disaster recovery.

Familiar with audit support, compliance standards, and cross-border data regulations.

Strong problem-solving and analytical skills.

Excellent communication and documentation abilities.

Ability to work independently and collaboratively in a team environment.

Prior experience working in the banking industry is preferred.

Please note that only shortlisted candidates will be notified.