Senior Developer

Telair; Brisbane; On-site; AUD 120,000 - 160,000; Full time

Benefits offered by this job

Training budgets

Conference budgets

Ownership of real systems

Small team

Modern tooling including AI

In-office Brisbane

Job summary

Telair, a growing national Internet Service Provider based in Brisbane, is seeking two senior engineers to join our in-house dev team. You will build and maintain core systems including a .NET CRM and Python backend, connecting to nbn wholesale carriers, networks, and Microsoft 365.

You’ll own features from design to production and work closely with network, support and operations to ship reliable, scalable solutions.

Qualifications

• Senior-level experience with Python 3 or C#/.NET in commercial projects.
• Strong REST API, integration and relational database experience.
• Comfort working in Linux environments.
• Ability to work independently with good judgment.
• Experience with AI coding tools is a plus.

Responsibilities

• Take features from design to production as an individual contributor.
• Design, build, and extend Python and .NET services and APIs.
• Integrate with nbn wholesale carriers and other APIs.
• Collaborate with network, support and operations teams.
• Help modernise legacy systems while shaping CRM evolution.

Skills

Python 3

C#/.NET

REST API

Relational databases

Linux

AI coding tools

Independent working

Tools

Docker

CI/CD

Ansible

Django

FastAPI

Vue

Job description

Telair is a growing national Internet Service Provider headquartered in Brisbane. Our in-house dev team builds and maintains all of our core systems, including our custom-built CRM (.NET), APIs, websites, and customer portals. We're building out a Python backend that ties these together and connects them to nbn and other wholesale carriers, our network, and Microsoft 365. Throughout, we focus on automation and customer self-service so the business can scale without adding headcount.

We're hiring two senior engineers.

The work

Current and upcoming projects include:

Automating nbn service delivery, including appointment management for fibre upgrades and an uplift of our trouble ticket integration

Automated outage and maintenance notifications for customers

Onboarding additional wholesale carriers through their APIs

Most of this is integration-heavy work: unreliable third-party APIs, long-running workflows, and data that has to stay consistent across systems. If you've done this kind of work before, you know where the hard parts are.

The stack, honestly

The CRM is a mature .NET Framework application that the business depends on every day. It works well, and parts of it are due for modernisation. The Python side is newer. You'll have real input into the direction of both, rather than inheriting decisions made by someone who has since left.

How we use AI

We use LLMs and coding agents daily for writing and reviewing code, investigating problems, and documentation. We're expanding our use of agents in development and in our internal tools. We treat these as tools: engineers are accountable for everything they ship, and we value people who can tell when the output is wrong.

The roles

You'll report to the Dev Lead and work as a hands-on individual contributor. You'll take features from design to production and work directly with the network, support, and operations staff who use what you build. There are no layers of product management between you and the people with the problem.

Python

Build and extend the customer portal and API services

Design and maintain carrier, network, and cloud integrations

Build automation and agent-based tooling for operations

.NET

Extend and modernise the CRM

Build the workflows and integrations that connect the CRM to the rest of the platform

Help decide how the CRM evolves over the next few years

What we're looking for

Senior-level commercial experience with Python 3 and/or C#/.NET

Solid REST API, integration, and relational database experience

Comfort working in Linux

Sound judgement about trade-offs, and the ability to work independently

Experience with AI coding tools

Also useful

Django, FastAPI, or Vue

Experience modernising legacy .NET Framework systems

Building with LLM APIs, agents, or MCP

Telco or networking experience (nbn wholesale, Juniper, NetBox)

Docker, CI/CD, Ansible

What we offer

Training and conference budgets

Ownership of real systems, and a short distance between writing code and seeing its effect

A small team where your experience shapes technical decisions

Freedom to use, and help choose, modern tooling, including AI

In-office in Brisbane, working closely with the team