We're looking for a mid level .NET Engineer to join a large-scale .NET 10 upgrade program focused on strengthening a complex API landscape. This role will play a key part in upgrading critical APIs and services, helping to improve platform security, stability, maintainability, and long-term resilience.
This initial 6-month contract will see you working closely with service-owning squads to deliver upgrades across multiple services, resolve compatibility challenges, and establish repeatable upgrade patterns that support a secure, consistent, and supported technology environment.
This is: what you'll do
- Upgrade enterprise APIs and services to .NET 10
- Refactor applications and components to address framework compatibility requirements
- Resolve build, runtime, deployment, and dependency-related issues
- Maintain application stability and minimise regression risks throughout upgrades
- Collaborate with development teams on code reviews, testing, validation, and releases
- Deliver automated testing enhancements to support quality outcomes
- Work within existing CI/CD pipelines to deploy changes through multiple environments
- Establish repeatable upgrade methodologies and technical standards
- Document upgrade approaches, technical decisions, and lessons learned
- Support production releases and post-deployment validation activities
- Strong commercial experience with C# and modern .NET development
- Proven experience upgrading applications between major .NET versions
- Strong ASP.NET Core and API development experience
- Experience with dependency management and package upgrades
- Ability to refactor legacy or incompatible application components
- Strong automated testing experience across unit and integration testing
- Experience working with CI/CD pipelines and controlled deployment processes
- Strong troubleshooting skills across build, runtime, and compatibility issues
- Experience working within large-scale enterprise environments highly regarded
- Join a significant enterprise-wide technology modernisation program
- Work across a large and complex API ecosystem
- Influence technical standards and repeatable engineering practices
- Gain exposure to platform-wide transformation with immediate business impact
Apply with purpose. Be part of a placement that gives back. For every role we fill, we donate to a charity of the client's choice. We've surpassed $1 million donated and we're just getting started.
This is: what's next
Apply now or reach out to:
Lory Corvera
Recruitment Consultant Natural Selection Group
M: +61 3 9087 4194
E: lory.corvera@naturalselectiongroup.com.au
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