Senior Backbone Network Architect for AI Infrastructure

Matchbox; Sydney; Hybrid; AUD 180,000 - 280,000; Full time

Job summary

Firmus Technologies is seeking a Principal Network Architect, Backbone Connectivity to lead architecture for our national and international backbone networks in Sydney. You will shape the standards, patterns, and vendor-neutral designs across terrestrial and subsea assets, ensuring resilience and scalability for our AI factories and cloud services.

You will collaborate with carriers, subsea operators, and data-centre partners, driving technical assurance, cutovers, and operational readiness,

Qualifications

• Bachelor's degree or equivalent in electrical/telecoms or related field.
• 12+ years designing and operating large-scale backbone networks.
• Experience with carrier, hyperscale, or AI infrastructure environments.

Responsibilities

• Own the technical architecture of Firmus's backbone network.
• Lead architecture reviews, governance, and change control.
• Provide independent technical assurance across lifecycle from design to handover.

Skills

Backbone design

DWDM/OTN

IP/MPLS

Segment routing

EVPN

SRLG analysis

Vendor governance

Education

Bachelor's degree in Electrical/Electronic Engineering or related

Tools

ROADM

Optical transport equipment

Networking hardware

Job description

Firmus Technologies is seeking a Principal Network Architect, Backbone Connectivity to lead architecture for our national and international backbone networks in Sydney. You will shape the standards, patterns, and vendor-neutral designs across terrestrial and subsea assets, ensuring resilience and scalability for our AI factories and cloud services.

You will collaborate with carriers, subsea operators, and data-centre partners, driving technical assurance, cutovers, and operational readiness,