L1 Network Engineer | Firewall

Alphaeus Pte Ltd; Singapore; On-site; SGD 60,000 - 80,000; Full time

Job summary

A leading company in IT security solutions is seeking a skilled professional to provide Level 1/2 support in firewall administration and network security. The ideal candidate will collaborate with cross-functional teams, ensure compliance with SLAs, and document configurations and procedures. This role involves both remote and onsite operations and will support a multi-site environment in alignment with security best practices.

Qualifications

• Minimum 1 year experience in firewall administration and network support.
• Strong knowledge of firewall platforms and network protocols.
• Certifications like CCNP Security or equivalent is a plus.

Responsibilities

• Provide Level 1/2 support for firewall and IPS.
• Manage and maintain firewall policies.
• Participate in change management and problem resolution processes.

Skills

Firewall administration

Network protocols

Incident response

Collaboration

Capacity planning

Education

Diploma or Degree in Computer Science

Tools

ITSM/ITOM tools

Firewall platforms (Palo Alto, Fortinet, Cisco ASA)

Job description

Responsibilities:

· Provide Level 1/2 support for firewall and intrusion prevention systems (IPS), including configuration, monitoring, and troubleshooting.

· Collaborate with other engineers to support both network and security devices across multiple campus locations.

· Manage and maintain firewall policies, rules, and configurations in accordance with security best practices.

· Perform incident response and remediation for security events in coordination with the security operations team.

· Support centralized network administration for switches, routers, wireless controllers, and other network equipment.

· Participate in change management and problem resolution processes.

· Ensure compliance with Service Level Agreements (SLAs) and contribute to monthly reporting using ITSM/ITOM tools.

· Assist in capacity planning and performance tuning of firewall and network systems.

· Maintain documentation for configurations, procedures, and troubleshooting guides.

Requirements:

· Diploma or Degree in Computer Science, Information Technology, or a related field.

· Minimum 1 year of experience in firewall administration and network support.

· Strong knowledge of firewall platforms (e.g., Palo Alto, Fortinet, Cisco ASA/Firepower).

· Solid understanding of network protocols (TCP/IP, BGP, OSPF, VLANs, VPNs).

· Experience with intrusion prevention systems (IPS) and security monitoring tools.

· Familiarity with ITSM/ITOM platforms for incident and change management.

· Ability to work in a multi-site environment and support remote and onsite operations.

· Certifications such as CCNP Security, Fortinet NSE, Palo Alto PCNSE, or equivalent is a Plus.

· Experience in healthcare or large enterprise environments is a plus.

· Knowledge of vulnerability scanning and remediation processes.

· Collaboration with cross-functional teams including Level 1 and Level 3 support.

· Participation in after office hour support depending on operational needs.