Location:
Sydney, Australia
About the Company
A rapidly growing technology organisation is building next-generation
AI infrastructure and cloud platforms
across APAC and is looking for a
Principal Network Architect
to lead the design and evolution of its national and international backbone network.
This is a highly strategic technical role focused on building a
scalable, resilient and vendor-neutral connectivity architecture
across terrestrial fibre, subsea networks, optical transport, IP backbone and data-centre interconnection.
You will work closely with carriers, fibre providers, subsea operators, data centres, technology vendors and internal engineering teams, acting as a key technical authority for backbone architecture and connectivity strategy.
Key Responsibilities
Own the architecture and technical direction of the
national and international backbone network
.
Design and evolve terrestrial fibre, subsea, optical and IP backbone infrastructure.
Define network standards, reference architectures and reusable design patterns.
Ensure high levels of
resilience, route diversity and SRLG protection
.




Lead technical evaluation and selection of carriers, subsea providers and network vendors.
Develop technical requirements, RFPs and vendor evaluation criteria.
Provide technical assurance across design, delivery, migration and operational readiness.
Lead complex network changes, migrations and cutovers.
Work closely with Network Engineering, Data Centre and Operations teams.
Mentor senior engineers and contribute to long-term connectivity strategy.
10+ years' experience
designing and operating large-scale backbone networks.
Principal/Lead Architect or Distinguished Engineer-level experience.
Background within a
carrier, hyperscaler, cloud, data-centre or AI infrastructure
setting.
DWDM / OTN / coherent optics
100G / 400G / 800G
IP/MPLS & Segment Routing
EVPN & traffic engineering
SRLG and network resilience
Experience working with carriers, fibre providers, subsea operators and major network vendors.
Strong architecture, technical assurance and stakeholder management skills.
#J-*****-Ljbffr

📌 Principal Network Architect (Sydney)
🏢 Hamilton Barnes
📍 Sydney