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 www.axiomtechnologies.com

We are looking for an experienced Senior Technical Security Specialist to design, deploy, maintain, and support large-scale corporate network and security infrastructure across on-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 provide Tier 3 technical support for 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.
• Provide Tier 3 support for 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 escalate 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 between 7:00 PM and 11:00 PM, with activities lasting approximately 1–6 hours depending 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 of LAN, WAN, and Data Centre networking.
• Expert-level experience with Cisco routing and switching technologies.
• Strong understanding of OSPF and BGP.
• Experience with NAT, DNS, DHCP, and IP Address Management (IPAM).
• Knowledge of Software Defined Networking (SDN).

Cloud Networking

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 across AWS, Azure, and GCP is 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 as AlgoSec FireFlow or equivalent.
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