Company

Established in 1980, Borger Cranes is one of the largest family-owned mobile crane operators in Australia with over 10 depots across NSW and QLD.

About the Role

We are an enterprise organisation seeking an experienced Senior .NET / C# Developer to join our technology team on an exciting greenfields build. Working from well-defined requirements provided by a dedicated architect and business analyst, you will focus purely on what you do best — writing high-quality code and ensuring the integrity of our AI-assisted development workflow.

This is a modern development environment where AI tooling is used extensively to accelerate delivery. Your role will be central to maintaining code quality, reviewing AI-generated output for correctness, security, and compliance, and ensuring the codebase remains clean, consistent, and production-grade.

You will work closely with a collaborative development team across a full .NET stack, building cross-platform desktop applications using Avalonia UI backed by a robust PostgreSQL and Azure-hosted infrastructure.

Key Responsibilities

• Develop high-quality .NET / C# applications targeting the Avalonia UI framework following MVVM patterns

• Implement data access and business logic layers using Entity Framework Core against PostgreSQL

• Build and integrate RESTful APIs as part of the broader enterprise system

• Review AI-generated code critically — assessing correctness, security, performance, and adherence to architectural standards

• Write and maintain automated tests using xUnit or NUnit, upholding a strong test culture throughout the project

• Work within Azure DevOps CI/CD pipelines, ensuring code quality gates and deployment standards are met

• Collaborate closely with fellow developers, the project architect, and business analyst to deliver against requirements

• Maintain clear, consistent coding standards across a greenfields codebase

Requires Skills & Experience

Must have:

• 5+ years of professional .NET / C# development experience delivering production-grade systems

• Strong experience with full-stack .NET development — APIs, business logic, and data access layers

• Proficiency with Entity Framework Core and relational database development (PostgreSQL preferred)

• Solid RESTful API design and integration experience

• Demonstrated experience with automated testing — xUnit, NUnit, or equivalent — and a genuine commitment to test-driven culture

• Experience with CI/CD pipelines, preferably Azure DevOps

• Familiarity with Avalonia UI, WPF, or strong XAML/MVVM experience with willingness to work in Avalonia

• Comfortable working in an AI-assisted development environment — experience reviewing, validating, and refining AI-generated code

• Comfortable with full-time onsite work in Glendenning NSW (Western Sydney). This role is in the room with the team, every day. If you're after remote or hybrid, this isn't the role for you.

Highly regarded:

• Prior experience on greenfields enterprise builds

• Hands-on Avalonia UI experience

• Azure cloud services experience

• Familiarity with .NET MAUI or other cross-platform frameworks

What We Offer

• Competitive salary: $130,000 – $165,000 + superannuation (commensurate with experience)

• Permanent, full-time role with long-term stability

• Modern, AI-assisted development environment with cutting-edge tooling

• Greenfields project — build something from the ground up, the right way

• Collaborative team with a dedicated architect and BA — you focus on code, not meetings

• Supportive workplace with opportunities for professional development

• Glendenning office with onsite parking - straight off the M7, easy access from anywhere in Western Sydney, the Hills, the Hawkesbury, or the Blue Mountains. No CBD commute.

How to Apply

If you are a detail-oriented senior developer who takes pride in code quality and wants to work on a meaningful greenfields enterprise system, we would love to hear from you.

Please submit your CV and a brief cover letter outlining your relevant experience.