Network Lead (Cisco / Network Security / Firewalls)

AlpSoft Technologies Pte Ltd; Singapore; On-site; SGD 90,000 - 120,000; Full time

Job summary

A tech solutions provider in Singapore is looking for an experienced Network Security Engineer to lead core network infrastructure management and security initiatives. The ideal candidate will have over 10 years of hands-on experience, hold a relevant degree, and possess certifications like CCNP. Strong leadership and cloud security knowledge are essential. Join us to play a key role in shaping our network security strategies.

Qualifications

• Must be eligible for Singapore Security Clearance.
• Minimum 10 years of hands-on networking and network security experience.
• Experience leading a small technical team (3+ members).

Responsibilities

• Design, implement, and manage core network infrastructure.
• Perform network security hardening and remediation.
• Lead a small technical team in daily operations.
• Monitor and respond to security incidents.

Skills

Network infrastructure design

Network security hardening

Team leadership

Cloud network security

Routing and switching

Load balancers management

Data security compliance

Education

Bachelor’s degree in IT or Computer Science

Cisco Certified Network Professional

ITIL Foundation v4 Certified

Job description

Responsibilities

Network & Security Infrastructure

• Design, implement, and manage core network infrastructure including routing, switching, load balancers, firewalls, and application gateways.

• Configure and maintain site-to-site and remote access VPN solutions.

• Implement cloud network security solutions and web application firewalls.

Security & Compliance

• Perform network security hardening and remediation in accordance with industry best practices (CIS, ITIL).

• Implement network access control (NAC) and zero-trust network architectures.

• Monitor and respond to security incidents, intrusion detection, and prevention systems (IDPS).

Leadership & Team Management

• Lead a small technical team (3+ members) in daily operations and strategic projects.

• Provide mentorship and technical guidance to team members.

Automation & Monitoring (Desirable)

• Automate network tasks using Python, Ansible, or similar tools.

• Monitor network performance and optimize infrastructure using tools like SolarWinds, PRTG, or Nagios.

Core Skills & Expertise

Load Balancers

• Experience with F5 BIG-IP or equivalent solutions.

• Knowledge in application delivery, SSL offloading, and traffic management.

Network Routing & Switching

• Cisco IOS and Nexus series configuration and troubleshooting.

• Experience with OSPF, BGP, EIGRP, VLANs, and general IP networking.

• Familiarity with alternative solutions (Juniper, Arista, HPE/Aruba).

Next-Generation Firewalls & IDPS

• Experience with Check Point, Palo Alto, or equivalent firewalls.

• Configuring, tuning, and maintaining IDPS solutions and analyzing logs.

Cloud Network Security & Application Gateways

• Experience with Azure Firewall, Azure Application Gateway, and cloud-native security solutions.

• Familiarity with AWS or Google Cloud equivalents is a plus.

Software-Defined Networking (SDN/SDA/SD-WAN)

• Knowledge of Cisco ACI, Cisco SD-WAN, VMware NSX, or equivalent SDN solutions.

• Experience in SD-WAN policy deployment and controller-based configuration.

Network Security Protocols

• Strong understanding of IPSec, SSL/TLS, 802.1x, and TACACS/RADIUS.

• Implementation of network access controls and zero-trust policies.

Qualifications

• Bachelor’s degree in IT, Computer Science, or related field (or equivalent experience).

• Must be eligible for Singapore Security Clearance.

• Minimum 10 years of hands‑on networking and network security experience.

• Experience leading a small technical team (3+ members).

• Cisco Certified Network Professional (CCNP) or equivalent.

• ITIL Foundation v4 Certified.

• Strong knowledge of IP addressing, routing, VLANs, and network security best practices.