Resident Engineer (SDWAN & Zscaler)

Millennium Technology Services; Singapore; On-site; SGD 70,000 - 120,000; Full time

Job summary

Millennium Technology Services in Singapore seeks a proactive Resident Engineer specializing in SD-WAN and Zscaler to support enterprise network security and connectivity operations. You will deploy, troubleshoot, monitor, optimize, and support secure network infrastructure across enterprise environments.

The role requires strong technical expertise in SD-WAN architecture, cloud security platforms, network troubleshooting, and effective stakeholder communication to ensure stable and secure

Qualifications

• Diploma or Bachelor’s Degree in Computer Science, Information Technology, Network Engineering, or related field.
• Minimum 2–5 years of experience in network engineering, SD-WAN, or cybersecurity support.
• Hands-on experience with SD-WAN technologies and enterprise network infrastructure.
• Experience supporting Zscaler platforms such as ZIA and ZPA is highly preferred.

Responsibilities

• Deploy, configure, and maintain SD-WAN solutions across enterprise environments.
• Monitor network performance, availability, and connectivity to ensure optimal operations.
• Troubleshoot network, routing, VPN, and connectivity issues within LAN/WAN environments.
• Configure security policies, access controls, URL filtering, SSL inspection, and authentication integrations.
• Provide onsite and remote technical support for network and security-related incidents.
• Maintain proper documentation including network diagrams, SOPs, incident reports, and change records.

Skills

SD-WAN technologies

Network troubleshooting

Security concepts

Zero Trust architecture

Documentation

Education

Diploma or Bachelor's Degree in Computer Science, Information Technology, Network Engineering, or related field

Tools

Zscaler ZIA

Zscaler ZPA

Cisco

Fortinet

Palo Alto

Active Directory

SSO**

VPN

Job description

We are seeking a skilled and proactive Resident Engineer specializing in SD-WAN and Zscaler technologies to support enterprise network security and connectivity operations. The ideal candidate will be responsible for deployment, troubleshooting, monitoring, optimization, and support of secure network infrastructure across enterprise environments.

This role requires strong technical expertise in SD-WAN architecture, cloud security platforms, network troubleshooting, and stakeholder communication to ensure stable and secure network performance.

Key Responsibilities

SD-WAN & Network Operations

• Deploy, configure, and maintain SD-WAN solutions across enterprise environments.
• Monitor network performance, availability, and connectivity to ensure optimal operations.
• Troubleshoot network, routing, VPN, and connectivity issues within LAN/WAN environments.
• Perform configuration, upgrades, patching, and preventive maintenance activities.
• Support firewall, routing, switching, and wireless infrastructure when required.
• Implement and manage Zscaler solutions including ZIA (Zscaler Internet Access) and ZPA (Zscaler Private Access).
• Configure security policies, access controls, URL filtering, SSL inspection, and authentication integrations.
• Troubleshoot user access, cloud security, and policy-related issues.
• Monitor security alerts, logs, and incidents while ensuring compliance with security standards.
• Provide onsite and remote technical support for network and security-related incidents.
• Perform root cause analysis and provide timely resolution for escalated issues.
• Work closely with internal teams, vendors, and customers during troubleshooting and implementation.
• Maintain proper documentation including network diagrams, SOPs, incident reports, and change records.

Project & Improvement Initiatives

• Participate in network migration, enhancement, and implementation projects.
• Recommend improvements for network security, scalability, and performance optimization.
• Assist in testing and validating new technologies and solutions.

Requirements

Education

• Diploma or Bachelor’s Degree in Computer Science, Information Technology, Network Engineering, or related field.

Experience

• Minimum 2–5 years of experience in network engineering, SD-WAN, or cybersecurity support.
• Hands-on experience with SD-WAN technologies and enterprise network infrastructure.
• Experience supporting Zscaler platforms such as ZIA and ZPA is highly preferred.

Technical Skills

• Strong understanding of:
  • TCP/IP, DNS, DHCP, VPN, Routing & Switching
  • SD-WAN technologies
  • Firewall and network security concepts
  • Cloud security and Zero Trust architecture
• Familiarity with:
  • Cisco, Fortinet, Palo Alto, Aruba, or related networking products
  • Network monitoring and troubleshooting tools
  • Microsoft Active Directory and SSO integrations

Soft Skills

• Strong analytical and troubleshooting skills.
• Good communication and stakeholder management abilities.
• Able to work independently and under pressure.
• Good documentation and reporting skills.