Network Engineer / Senior Network Engineer / Lead Network Engineer valid CCNA certified

Avensys Consulting; Singapore; On-site; SGD 70,000 - 90,000; Full time

Job summary

Avensys Consulting is seeking a skilled Network Engineer with hands-on experience in enterprise network infrastructure, next‑generation firewalls, and proxy security solutions. The ideal candidate will hold CCNA certification and practical experience with Fortinet FortiGate and Palo Alto NGFW platforms.

The role focuses on designing, implementing, securing, and maintaining high‑availability network environments across LAN/WAN/WLAN, VPNs, and security services, with strong documentation and

Qualifications

• Bachelor’s degree or equivalent experience.
• CCNA certification required.
• 3–7 years hands-on network security engineering.
• Experience with Fortinet FortiGate, Palo Alto NGFW, and proxy/web security.

Responsibilities

• Design, implement, and maintain LAN, WAN, WLAN, and SD‑WAN environments.
• Configure routing protocols (OSPF, BGP, EIGRP).
• Implement VLANs, NAT, QoS, and IP addressing schemes.
• Monitor network performance and ensure high availability.
• Deploy Fortinet FortiGate firewalls and Palo Alto NGFW.
• Configure security policies, VPNs, and web filtering.
• Maintain network diagrams and documentation.
• Collaborate with SOC teams for threat mitigation.

Skills

CCNA certification

Network security engineering

TCP/IP/DNS/DHCP

VPN technologies

Routing & Switching concepts

Education

Bachelor’s degree in Computer Science, IT, or related field

Tools

Fortinet FortiGate

Palo Alto NGFW

Secure Web Gateway

Job description

Avensys is a reputed global IT professional services company headquartered in Singapore. Our service spectrum includes enterprise solution consulting, business intelligence, business process automation and managed services. Given our decade of success, we have evolved to become one of the top trusted providers in Singapore and service a client base across banking and financial services, insurance, information technology, healthcare, retail and supply chain

Job Summary

We are seeking a skilled and detail-oriented Network Engineer with strong hands‑on experience in enterprise network infrastructure, next‑generation firewalls, and proxy security solutions. The ideal candidate will have expertise in Cisco Certified Network Associate (CCNA) valid certification and practical experience with Fortinet and Palo Alto Networks security platforms. This role is responsible for designing, implementing, securing, and maintaining enterprise‑level network environments.

Key Responsibilities

• Design, implement, and maintain LAN, WAN, WLAN, and SD‑WAN environments.
• Configure and troubleshoot routing protocols (OSPF, BGP, EIGRP).
• Implement VLANs, NAT, QoS, and IP addressing schemes.
• Monitor network performance and ensure high availability.
• Deploy, configure, and manage Fortinet FortiGate firewalls.
• Deploy and administer Palo Alto Networks NGFW solutions.
• Configure security policies, NAT policies, VPNs (IPSec & SSL VPN).
• Implement IDS/IPS, Anti‑virus, Web Filtering, and Application Control.
• Perform firewall rule audits and policy optimization.
• Troubleshoot firewall‑related connectivity and performance issues.
• Configure and manage enterprise proxy solutions (e.g., Secure Web Gateway).
• Implement URL filtering, SSL inspection, and content filtering.
• Monitor proxy logs and generate security reports.
• Integrate proxy solutions with directory services (e.g., Active Directory).
• Configure site‑to‑site and client VPNs.
• Troubleshoot VPN connectivity issues.
• Implement secure remote access solutions.
• Analyze logs and respond to security incidents.
• Work with SOC teams for threat mitigation.
• Perform root cause analysis for outages and breaches.
• Maintain detailed network diagrams and documentation.
• Create SOPs for firewall and proxy configurations.
• Ensure compliance with security standards and company policies.

Required Qualifications

• Bachelor’s degree in Computer Science, IT, or related field (or equivalent experience).
• Required to have valid CCNA certification.
• Candidate should have 3–7 years of hands‑on experience in network security engineering.
• Strong experience with Fortinet, FortiGate Firewalls, Palo Alto NGFW, Proxy/Web Security solutions.
• Solid understanding of TCP/IP, DNS, DHCP.
• Routing & Switching concepts and VPN technologies.
• Network security best practices.

What’s On Offer

You will be remunerated with an excellent base salary and entitled to attractive company benefits. Additionally, you will get the opportunity to enjoy a fun and collaborative work environment, alongside a strong career progression.