Senior Network Engineer

RGIT Australia; Adelaide; On-site; AUD 120,000 - 160,000; Full time

Job summary

RGIT Australia in Adelaide is seeking a Senior Network Engineer to design, implement, and support network environments across our client base. You’ll work with Pre-Sales, Project Engineers and the Service Desk to deliver secure, reliable networking solutions.

The role focuses on standards, solution design, and successful delivery of network projects, with responsibilities spanning hybrid cloud connectivity, security, and documentation.

Qualifications

• 5+ years of experience as a Network Engineer or Senior Network Engineer.
• Experience designing, implementing, and supporting multi-client networks.
• Strong knowledge of switching, routing, firewalls, and SD-WAN.
• Familiarity with Azure and AWS cloud networking.
• Ability to mentor engineers and collaborate with teams.

Responsibilities

• Design, implement and maintain client network infrastructures.
• Lead delivery of network projects from design to go-live.
• Configure and deploy network hardware per designs.
• Develop deployment templates and standards.
• Provide senior escalation support for complex issues.
• Maintain network diagrams and documentation.

Skills

Network engineering

Technical leadership

Troubleshooting

Documentation

Stakeholder management

Cloud networking

Tools

Fortinet

Cisco

Palo Alto

Job description

Hindmarsh, South Australia 5007, Australia

Full-time Permanent Mid-level Senior

Posted 26 Aug 2026

Description

Summary

The Senior Network Engineer designs, implements, optimises and supports network environments across our client base. Working closely with Pre-Sales, Project Engineers and the Service Desk, this role provides technical leadership on network infrastructure projects and acts as the senior escalation point for complex support issues. The focus of the role is to deliver secure, reliable and scalable networking solutions, while upholding networking standards, shaping solution design, and ensuring network-related projects and services are delivered successfully.

Main Duties and Responsibilities

Network Design & Implementation

• Design, implement and maintain network infrastructure across multiple client environments, spanning switching, routing, wireless, firewalls, SD-WAN and VPN technologies.
• Lead the technical delivery of client network projects - infrastructure refreshes, migrations, upgrades and new site builds - from design through to go-live.
• Configure and deploy network hardware and security appliances in line with approved solution designs, vendor best practices and Comwire IT's delivery standards.
• Contribute to network standards, configuration templates and deployment methodologies that support consistent, repeatable delivery across a diverse client base.
• Support hybrid cloud and datacentre networking, including connectivity between client sites, Microsoft 365/Azure environments and third-party datacentres.

Network Operations & Support

• Act as a senior technical escalation point for complex networking and connectivity issues.
• Troubleshoot and resolve advanced LAN, WAN, WLAN, SD-WAN, and Internet connectivity problems.
• Monitor network performance, availability, and capacity, identifying issues and improvement opportunities.
• Conduct network audits, health checks, and infrastructure assessments.
• Work with carriers, vendors, and third-party providers to resolve service-related issues.

Network Security

• Implement and maintain network security solutions including firewalls, VPNs, network segmentation, and access controls.
• Assist with designing and implementing secure network architectures.
• Identify security risks within client environments and recommend remediation strategies.
• Support the implementation of technologies such as Multifactor Authentication, Conditional Access, Network Access Control (NAC), and Zero Trust principles where applicable.

Technical Leadership

• Provide technical guidance and mentoring to Network Engineers, Project Engineers, and Service Desk staff.
• Participate in peer reviews and technical solution validation.
• Contribute to the continuous improvement of engineering standards, processes, and documentation.
• Assist the Pre-Sales team with technical discovery, solution design, and effort estimation for networking opportunities.

Documentation & Administration

• Maintain accurate network diagrams, technical documentation, configuration records, and operational procedures.
• Ensure all project notes, time entries, and support activities are recorded within company systems.
• Produce implementation plans, change documentation, and technical handover documentation.
• Ensure documentation remains current and reflects the operational environment.
• Maintain awareness of emerging networking, security, and cloud technologies.
• Participate in training and certification programs relevant to networking and cybersecurity.
• Technical Problem Solving: Ability to diagnose and resolve complex networking issues efficiently and effectively.
• Communication: Ability to communicate technical concepts clearly to both technical and non technical stakeholders.
• Technical Leadership: Ability to mentor junior engineers and provide technical direction across projects and operational activities.
• Attention to Detail: Excellent documentation skills and attention to detail when designing and implementing solutions.
• Risk Management: Ability to identify infrastructure risks and develop mitigation strategies.
• Stakeholder Management: Ability to work collaboratively with clients, vendors, and internal teams.
• Time Management & Organisation: Ability to prioritise workloads and manage multiple competing priorities.
• Transparency: Communicates openly and effectively and is receptive to feedback.
• Approachability: Supports and assists colleagues when required.
• Passionate: Encourage. inspire each other to be our best self.
• Inclusive: Values input from across the team, brings junior engineers and colleagues along.
• Accountable: Takes ownership of outcomes and delivers on commitments.

Technical Skills & Experience

• 5+ years experience in a Network Engineer or Senior Network Engineer role within an MSP or Helpdesk environment
• Demonstrated experience designing, implementing, and supporting multi-client networking solutions.
• Strong experience with:
  • Enterprise Switching and Routing
  • Firewall Technologies (Fortinet, Cisco, Palo Alto or equivalent)
  • Network Security and Segmentation
  • WAN and Internet Connectivity Services
  • Network Monitoring and Diagnostic Tools
  • High Availability and Redundancy Technologies
• Strong troubleshooting skills across:
  • LAN Networks (Switching, Routing, VLANs)
  • WAN and SD-WAN Networks
  • Firewall and VPN Services
  • Internet and Carrier Services
• Experience producing network diagrams, technical designs, standards, and operational documentation.
• Exposure to cloud networking technologies including Azure and AWS.
• Experience supporting datacentre and hosted infrastructure environments.
• Knowledge of cybersecurity principles and security frameworks.

Certifications

• Relevant cybersecurity certifications (desired)