Senior Software Engineer (Python/.NET)

Location: In-office in Brisbane, Australia

Salary: A$140,000–A$150,000 per annum

Company

A growing national Internet Service Provider headquartered in Brisbane. The in-house development team builds and maintains a custom .NET CRM, APIs, websites, customer portals, and a Python backend connected to wholesale carriers, the network, and Microsoft 365.

What you will do

• Build and extend the customer portal and Python API services.
• Design and maintain carrier, network, cloud, and wholesale provider integrations.
• Automate nbn service delivery, fibre-upgrade appointment management, trouble-ticket integration, and customer outage and maintenance notifications.
• Extend and modernise the mature .NET Framework CRM and build workflows connecting it to the wider platform.
• Build automation and agent-based tooling for operations using AI-assisted development practices.
• Take features from design to production and work directly with network, support, and operations staff.

Requirements

• Senior-level commercial experience with Python 3 and/or C#/.NET.
• Solid experience with REST APIs, integrations, and relational databases.
• Comfort working in Linux.
• Sound judgement about technical trade-offs and the ability to work independently.
• Experience with AI coding tools.

Nice to have

• Django, FastAPI, or Vue experience.
• Experience modernising legacy .NET Framework systems.
• Salesforce integration experience.
• Experience building with LLM APIs, agents, or MCP.
• Telco or networking experience, including nbn wholesale, Juniper, or NetBox.
• Docker, CI/CD, or Ansible experience.

Culture & Benefits

• In-office work in Brisbane with close collaboration across a small team.
• Training and conference budgets.
• Ownership of real systems with a short feedback loop between coding and operational impact.
• Opportunity to shape technical decisions and choose modern tooling, including AI.