Senior Network Engineer – LAN/WAN, Security & Cloud

NTT America, Inc.; Cyberjaya; On-site; MYR 90,000 - 140,000; Full time

Job summary

NTT DATA is seeking an experienced Network Engineer to design and manage enterprise LAN/WAN topology, firewall policies, VPN services, DNS/DHCP/IPAM, load balancing, and cloud networking across multiple environments. You will monitor performance, ensure security, and support incident response while maintaining documentation and runbooks.

The role requires 5–10 years in a network engineering capacity, formal knowledge of Aruba, Fortinet, MikroTik, and Cisco tools, and strong analytical skills in

Qualifications

• 5–10 years of experience in as a Network Engineer or equivalent position.
• Experience with Aruba switching configuration, VLAN provisioning, and policy management.
• Proficient in firewall management (Fortinet FortiGate and MikroTik).
• VPN gateway configuration and monitoring (SSL VPN and client VPN).
• DNS, DHCP, and IP address lifecycle management.
• Knowledge of load balancing, health checks, and listener lifecycle.
• Experience with cloud networking and virtual networks.
• Familiarity with DDoS appliances and mitigation services.
• Ability to monitor Cisco DNA Centre and Cisco ThousandEyes.

Responsibilities

• Design and manage LAN and WAN topology — Aruba switching, VLAN provisioning and layer 3 routing
• Manage Fortinet and MikroTik firewall policies — rule lifecycle, NAT, CVE patching and security profiles
• Configure and maintain SSL VPN and client VPN services; manage user profiles and monitor tunnel health
• Manage DNS zones, DHCP scopes and IP address management across all environments
• Configure and maintain load balancer rules, health checks and listener configuration
• Manage cloud networking across all provider environments — security groups, routing and cloud VA firewalls
• Operate and maintain anti-DDoS appliances and cloud DDoS mitigation services
• Monitor network performance and availability using Cisco DNA and Cisco Thousand Eyes
• Monitor QoS and conduct regular performance and policy reviews; produce trend analysis reports
• Maintain network security posture; respond to security anomalies and policy violation alerts
• Participate in the change advisory process for all network changes and maintain audit records
• Maintain network documentation, configuration runbooks and topology diagrams
• Provide Level 2/3 network incident support and coordinate with vendors where required

Skills

LAN/WAN topology

Aruba switching

Fortinet FortiGate

MikroTik firewall

SSL VPN

DNS/DHCP/IPAM

Load balancing

Cloud networking

DDoS mitigation

Cisco DNA

QoS monitoring

Security policy

Job description

NTT DATA is seeking an experienced Network Engineer to design and manage enterprise LAN/WAN topology, firewall policies, VPN services, DNS/DHCP/IPAM, load balancing, and cloud networking across multiple environments. You will monitor performance, ensure security, and support incident response while maintaining documentation and runbooks.

The role requires 5–10 years in a network engineering capacity, formal knowledge of Aruba, Fortinet, MikroTik, and Cisco tools, and strong analytical skills in