Telair Pty Ltd · Melbourne VIC · Full time

Telair is one of Australia's longest-standing independent business telco providers: 20 years in business, growing fast, and known for actually answering the phone when customers call. We're hiring a Senior Core Network Engineer to be the senior technical authority for the day-to-day engineering of our core network.

The opportunity

Senior Core Network Engineer

Telair Pty Ltd · Melbourne VIC · Full time

Telair is one of Australia's longest-standing independent business telco providers: 20 years in business, growing rapid, and known for actually answering the phone when customers call. We're hiring a Senior Core Network Engineer to be the senior technical authority for the day-to-day engineering of our core network.

The opportunity

This is a hands‑on individual contributor role, the top of our engineering ladder, focused on delivering network change safely, resolving complex escalations, and maintaining the monitoring and alerting that keeps our services reliable. Working closely with the Network Infrastructure Manager, you'll translate design and project intent into executed, well‑documented change across our core network and supporting systems.

Our network is actively evolving: toward a fully redundant core, automation driven from NetBox as the single source of truth, and the retirement of legacy platforms. You'll be central to that agenda alongside business‑as‑usual operations. You'll also lead the network engineers day to day, setting technical direction, mentoring, reviewing work, and managing coverage and rostering, while formal people management sits with the CTO.

Full‑time, permanent, Melbourne‑based.

What you'll do

- Own the network change control process end to end: author scopes of work, plan and risk‑assess changes, and execute maintenance windows.
- Configure, maintain and optimise the core: Juniper (Junos) core, Ufispace / OcNOS NNI aggregation,



MikroTik CGNAT, BGP/ISIS routing, carrier interconnects, and IP addressing.
- Deliver the redundant‑core program and migrate services off legacy platforms (MikroTik BNGs, legacy MPLS).
- Act as the senior L3 escalation point for complex faults from Technical Support, including long‑running international throughput and latency disputes, and drive them to resolution.
- Lead detailed investigations into faults, performance degradation, and anomalies using a structured, evidence‑based methodology.
- Maintain and improve monitoring and dashboards (Grafana on TimescaleDB), logging (Graylog), and alerting (PagerDuty), continuously refining alert signal‑to‑noise.
- Plan and perform scheduled maintenance including after‑hours windows, and participate in the PagerDuty on‑call roster.
- Build and maintain endpoints in our in‑house Python API platform (Marvin), and advance NetBox‑driven config generation and reality‑vs‑intended audit.
- Create and maintain network documentation and runbooks, keeping NetBox current as the source of truth.
- Lead and mentor the network engineers, setting technical direction and managing day‑to‑day coverage.

Current & upcoming work

- Redundant core migration: complete NNI migration onto the aggregation layer for core failover; finish moving TC4 subscribers from MX80s to MX204s.
- Monitoring modernisation: complete the Influx to TimescaleDB migration onto a single scalable stack.
- Automation on a NetBox source of truth: API‑driven provisioning and diagnostics, config generation, and audit.




- Legacy decommissioning: migrate off legacy MikroTik BNGs; retire the legacy MPLS management network.
- CGNAT and IPv6: replace virtual MikroTik CGNAT with physical routers; progress IPv6 for CGNAT subscribers.
- Emerging: build out a Containerlab production replica and contribute to AI‑assisted change‑control and diagnostic tooling.

About you

- Deep, current service‑provider / telco networking knowledge: routing protocols, carrier interconnects (NNI), CGNAT, and IP transit and peering.
- Hands‑on Juniper (Junos) configuration and troubleshooting is essential; OcNOS and MikroTik RouterOS exposure is highly desirable.
- Proven ability to plan, risk‑assess, document, and execute change in a live, business‑critical environment with minimal service impact.
- Solid, practical Python: you'll build and extend API endpoints, work with NetBox‑driven config generation, and automate testing and monitoring. This stays a hands‑on network role, but you must be genuinely comfortable reading, writing, and debugging Python against real APIs.
- Familiarity with the observability stack (Grafana, TimescaleDB, Graylog, PagerDuty, NetBox) or clear equivalents, and a source‑of‑truth, infrastructure‑as‑code mindset.
- Able to work independently as a senior IC, taking end‑to‑end ownership of changes, escalations, and investigations.

Why Telair

- 20 years in business, independently owned, profitable and growing.
- A network with a real roadmap: redundant core, automation‑first, legacy retirement. You'll shape it, not just maintain it.
- The most senior individual contributor role in the network team, with genuine technical authority.
- Melbourne‑based, aligned to our data centre footprint.
- Values‑led: we say what we mean, we follow through, and we look after our customers and our team.

#J-18808-Ljbffr

📌 Senior Core Network Engineer (Melbourne)
🏢 @
📍 Melbourne