Senior Software Developer (.NET) – Digital Platform | Bluefin Resources is proud to be partnering with an innovative and fast-scaling digital technology company within the online wagering space. This organisation is a leader in delivering cutting-edge, high-transaction systems and is expanding its in-house development team as part of continued growth. We are seeking a motivated and experienced Senior Software Developer to join a high-performing team responsible for building and maintaining a proprietary digital betting platform. This is a key role working on complex backend systems with real-world scale, performance, and reliability challenges. Key Responsibilities Design, develop, and maintain enterprise-grade applications in a high-transaction environment. Migrate legacy .NET applications to .NET 8 and modernised architectures. Contribute to an event-driven microservices environment using tools like RabbitMQ, NServiceBus, or Azure Service Bus. Work closely with architecture and product teams to deliver reliable, scalable, and maintainable solutions. Develop and maintain technical documentation, specifications, and test plans. Provide ongoing support, bug fixes, and performance tuning for business-critical systems. What We're Looking For Strong experience with C# / .NET (including modernisation to .NET 8). Experience with event-driven architecture and messaging technologies (e.g. RabbitMQ, Azure Service Bus, NServiceBus). Deep knowledge of RDBMS, preferably Microsoft SQL Server. Proven capability to deliver low-latency, high-volume, scalable systems. Strong knowledge of object-oriented programming, software design patterns, and development best practices. Experience with Azure or similar cloud environments is highly desirable. A self-starter mindset with the ability to work both independently and as part of a broader team. Tech Stack Microsoft .NET 8 / C# Microsoft SQL Server Azure (preferred) RabbitMQ / Azure Service Bus / NServiceBus Git / CI pipelines (Jenkins, Bamboo, etc.) Desirable Skills ASP.NET, WPF, and front-end fundamentals (HTML, CSS, JavaScript) Experience with WCF, Web Services, and SOA Exposure to Agile development and modern DevOps practices Prior exposure to wagering, gaming, or transactional fintech platforms (advantageous but not essential) What’s on Offer Access to technically challenging, large-scale projects. Flexible working arrangements and a great team culture. Competitive remuneration based on experience. Opportunity to join a growth-stage product team with real ownership. Backing from Bluefin Resources throughout the hiring and onboarding process. Eligibility Must be based in Australia with full working rights. A National Police Check may be required as part of onboarding.