Back End Developer (Sydney, 2 DAYS PW WFH)
Technical Skills – C#, .Net, Azure, Claude AI, CI/CD
Salary – Up to 170k+ Super DOE
About the Company
This established technology business builds B2B digital products used by travel agents to manage bookings, payments and customer interactions through a single platform. With over a decade in the market and thousands of users relying on the product daily, the platform has become a trusted solution within the travel industry.
The engineering team is intentionally small and highly collaborative, working closely with the founders to solve complex technical problems and deliver meaningful product improvements. With several new projects recently approved, the team is focused on modernising its platform and evolving the architecture to support continued growth.
Engineers here are given real ownership and autonomy, with the opportunity to contribute to technical decisions and help shape the future of the product as the business continues to expand.
About the Role
This role will focus on modernising and evolving a large legacy platform currently built on .NET Framework. The team is in the process of migrating the system to a modern .NET architecture, requiring significant refactoring and the gradual transition from a monolithic application to scalable services connected through modern Web APIs.
You will work closely with senior engineers and the technical founders to improve code quality, architecture and system performance while helping deliver major feature migrations into the new platform. A strong focus of the role will be improving the structure and reliability of the existing system while building new backend capabilities.
The team also works with modern AI-assisted development tools including Copilot, Claude Code and Codex. Part of your role will involve reviewing and refining AI-generated code to ensure it meets production-quality standards.
The platform is hosted in Azure, and you will contribute to scalable API design, secure authentication patterns and modern deployment practices as the platform continues to evolve.
Technical Skills
Strong experience with C# and modern .NET development
Experience designing and building scalable APIs
Strong understanding of backend architecture and system design
Experience refactoring or modernising legacy systems
Experience building and maintaining integrations
Experience working with Azure and cloud-based environments
Experience with CI/CD pipelines and modern deployment practices
Familiarity with AI-assisted development tools such as Copilot, Claude Code and Codex
Strong problem-solving ability and confidence proposing technical solutions
If you enjoy tackling complex engineering challenges and helping modernise large platforms, this role offers the opportunity to make a real impact within a small, highly collaborative team.