Senior Corporate Networks Specialist -Sydney, New South Wales, Australia

Axiom Technologies is an Australia-based entity with a history of providing Managed IT solutions to medium- to large-scale enterprises globally. Please visit our website for more information about what we do at

We are looking for an experiencedSenior Technical Security Specialistto design, deploy, maintain, and support large-scale corporate network and security infrastructure acrosson-premises and Cloud environments.

he role will work closely with Network/Security/Application Architects, Business Stakeholders, Project Managers, Engineering, Operations teams, and technology vendors to deliver secure, resilient, and cost-effective network solutions.

The successful candidate will operate at a senior technical level, work independently, manage multiple projects simultaneously, and provideTier 3 technical supportfor complex network and security issues.

Key Responsibilities

• Design and deploy corporate network and security solutions across on-premises and Cloud environments.
• Develop and maintain detailed technical solution designs, architecture documents, and implementation documentation.
• Work closely with business stakeholders, Network/Security/Application Architects, and project teams to understand requirements and deliver appropriate solutions.
• Prepare detailed configuration, system integration, and implementation/change plans.
• Conduct peer reviews and ensure changes are implemented with minimal risk and disruption.
• ProvideTier 3 supportfor complex network and security incidents.
• Perform Root Cause Analysis (RCA) and Problem Incident Reviews (PIR).
• Troubleshoot and resolve high-impact technical issues across network and security platforms.
• Work with vendors to suspend issues, identify solutions, and implement fixes or workarounds.
• Conduct pre-upgrade testing, staging, and laboratory testing where required.
• Plan and execute network upgrades and change requests, including stakeholder engagement, approvals, and maintenance windows.
• Participate in after-hours network changes, typically commencing between7:00 PM and 11:00 PM, with activities lasting approximately1-6 hoursdepending on complexity.
• Troubleshoot issues arising during upgrades and coordinate vendor support when required.
• Prepare operational handover documentation and ensure successful transition to Operations.
• Develop work instructions, provisioning guides, and other operational support materials.
• Provide technical feedback and recommendations to improve future network upgrades and operational processes.

Technical Skills & Experience Network & Infrastructure

• Extensive hands-on experience designing and configuring enterprise network and security infrastructure.
• Strong knowledge ofLAN, WAN, and Data Centre networking.
• Expert-level experience withCisco routing and switchingtechnologies.
• Strong understanding ofOSPF and BGP.
• Experience withNAT, DNS, DHCP, and IP Address Management (IPAM).
• Knowledge of Software Defined Networking (SDN).

Strong experience with networking services across one or more of the major Cloud platforms:

• AWS:Direct Connect, VPC, Transit Gateway and related networking services.
• Microsoft Azure:ExpressRoute, vNet, Virtual WAN (vWAN), vHub and related services.
• Google Cloud:Partner Interconnect, VPC and related networking services.

Experience acrossAWS, Azure, and GCPis highly desirable.

Network Security

• Strong experience with enterprise firewall technologies and security platforms.
• Preferred firewall experience:
  • Fortinet
  • Check Point
  • Palo Alto, Cisco, or other major firewall platforms
• Experience in firewall policy design and implementation.
• Knowledge of IDS/IPS technologies.
• Experience with firewall policy management tools such asAlgoSec FireFlowor equivalent.

Automation & Infrastructure as Code

• Experience with automation and Infrastructure as Code (IaC) tools such as:
  • Terraform
  • Ansible
  • GitLab
• Understanding of API integration and management.

DDI & DNS

• Experience with DDI (DNS, DHCP and IP Address Management) platforms.
• Experience withEfficientIPis highly desirable.
• Experience withInfoblox, BlueCat, or equivalent DDI solutions will also be considered.
• Knowledge of Cloud DNS services such asAWS Route 53or equivalent.

Qualifications & Certifications

• Degree in Information Technology, Computer Science, Engineering, or equivalent experience.
• Minimum5 years of industry experiencein enterprise network design, engineering, and infrastructure.
• Vendor certifications in DDI and Security technologies are highly regarded.
• AWS, Azure, or Google Cloud networking/security certifications are desirable.
• CISSPor other recognised Cybersecurity certifications are advantageous.
• Certifications in Fortinet, Check Point, EfficientIP, Infoblox, or related technologies are highly desirable.

Additional Technical Knowledge

• Physical and virtual server configuration.
• Network packet capture and troubleshooting tools.
• Network monitoring and operational resilience platforms.
• Microsoft Office Suite.
• Microsoft Visio and MS Project.
• Atlassian Confluence.

Soft Skills

• Excellent customer service and stakeholder management skills.
• Strong written and verbal communication skills.
• Ability to remain calm and effective under pressure.
• Strong analytical and problem-solving abilities.
• Ability to collaborate effectively within cross-functional teams.
• Highly organised, self-disciplined, and able to work with minimal supervision.
• Ability to manage multiple projects and technical engagements simultaneously.
• Strong listening and interpersonal skills.
• Australian Permanent Resident.

Experience in a similar role

• 5+ years of relevant experience.

Job Features Job Category

Technical