Senior Network Architect

Company: OpasaLocation: Melbourne, VIC / Anywhere in AustraliaWork Arrangement: Fully Remote (WFH)Employment Type: Full-Time, PermanentSalary: From AUD 120,000 + SuperannuationPreferred Candidates: Australian Citizens,PR
About OpasaOpasa is a Melbourne-based technology services company that helps organisations design, deliver and optimise secure, scalable and resilient technology solutions aligned with business objectives.We are seeking an experienced Senior Network Architect to lead the architecture, design, governance and delivery of complex enterprise network solutions across on-premises and data centre environments.
About the RoleThe Senior Network Architect will provide technical leadership across enterprise network architecture and solution design. You will work with business stakeholders, enterprise architects, cybersecurity teams, infrastructure engineers, project teams and operations to translate business requirements into practical, secure and scalable network solutions.The role covers enterprise LAN/WAN, routing and switching, data centre networking, firewalls, network security, connectivity, load balancing, automation, observability, resilience and disaster recovery.
Key ResponsibilitiesAnalyse business and technical requirements and develop appropriate network architecture solutions.Lead end-to-end network architecture and solution design activities.Produce High-Level Designs (HLDs), solution architectures, technical standards and reference designs.Design and govern enterprise LAN/WAN, data centre, routing, switching and connectivity solutions.Develop scalable, resilient and highly available network architectures.Design network security solutions incorporating Zero Trust, segmentation, NAC, firewalls, secure remote access, DDoS protection and PKI.Provide architecture leadership across Layer 2/Layer 3 networking, MPLS, VPN, hybrid connectivity and Internet services.Design and govern data centre technologies including Cisco ACI, Cisco Nexus, EVPN/VXLAN and spine-leaf architectures.Design enterprise firewall and security-zone architectures across platforms such as Cisco and Juniper.Design load-balancing solutions, including F5, LSLB, GSLB, traffic management and disaster recovery.Promote network automation, Infrastructure as Code, API-driven management and automated testing.Define monitoring, logging and observability requirements using platforms such as Grafana, Prometheus and Splunk.Incorporate high availability, redundancy, failover, business continuity and disaster recovery requirements.Conduct architecture reviews, risk assessments and technical governance activities.Identify technical risks, dependencies and opportunities for modernisation, simplification and cost optimisation.Provide technical leadership, mentoring and guidance to engineers and project teams.Support implementation, transition to operations and continuous improvement initiatives.Contribute to network strategy, technology roadmaps and enterprise architecture standards.Required Skills and ExperienceExtensive experience in enterprise network architecture and solution design.Strong knowledge of LAN/WAN, data centre networking, routing, switching and network security.Experience designing high-availability, resilient and scalable network environments.Strong understanding of Layer 2/Layer 3 networking, routing protocols, spine-leaf architectures and network redundancy.Experience with MPLS, VPN, site-to-site connectivity, remote access, Internet and hybrid connectivity.Knowledge of Zero Trust, network segmentation, NAC, firewall architecture, DDoS protection, PKI and secure remote access.Experience with Cisco, Juniper or comparable enterprise firewall and networking platforms.Experience with Cisco ACI, Cisco Nexus, EVPN/VXLAN and data centre fabric architectures.Experience with F5 load balancing, including LSLB, GSLB and application traffic management.Knowledge of network automation, Infrastructure as Code, DevOps practices and API-driven network management.Experience with network monitoring, logging, alerting and observability platforms such as Grafana, Prometheus and Splunk.Strong understanding of disaster recovery, business continuity, failover design and elimination of single points of failure.Excellent technical documentation, stakeholder communication and problem-solving skills.Ability to communicate complex technical concepts clearly to technical and non-technical audiences.Strong architecture governance, leadership, mentoring and project collaboration skills.Ability to work independently and manage multiple initiatives in a remote environment.Education and CertificationsA relevant degree in Computer Science, Information Technology, Telecommunications, Engineering, Networking or a related discipline is desirable.Relevant certifications in Cisco networking, Cisco ACI, Cisco Nexus, Juniper, F5, network security, cloud networking or enterprise architecture are advantageous.
What We OfferFull-time permanent employment.Fully remote work-from-home arrangement within Australia.Opportunity to work on complex enterprise technology and transformation initiatives.Exposure to modern network architecture, security and automation practices.Career growth and professional development opportunities.Competitive remuneration from AUD 120,000 + superannuation.EligibilityPreferred candidates: Australian Citizens.Applicants must be able to work remotely from within Australia and meet applicable Australian employment and work-right requirements.
Ideal CandidateThe ideal candidate is a senior network professional with strong enterprise architecture, technical governance and solution design experience. You will be comfortable working across business, architecture, cybersecurity, engineering and operations teams, translating requirements into secure, scalable, resilient and cost-effective network solutions.