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 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).

Solid 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

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📌 Senior Corporate Networks Specialist -Sydney, New South Wales, Australia
🏢 Axiom Technologies
📍 New South Wales