Spinnaker Software

We are looking for a Senior .NET Developer to join our team and take ownership of a business-critical enterprise platform. This role blends hands-on development, architecture leadership, and production support, working across web, services, and data layers.

You’ll play a key role in modernising and evolving a large-scale .NET 8 platform, collaborating closely with Product and Technical teams to deliver high-quality solutions.

• →Design, develop, and deliver new features aligned to business requirements
• →Maintain and enhance an enterprise .NET platform across UI, services, and database layers
• →Troubleshoot and resolve production issues and bugs
• →Lead technical design discussions and contribute to architecture decisions
• →Mentor developers and enforce coding standards and best practices
• →Ensure quality through testing, code reviews, and documentation
• →Provide accurate estimations and support agile delivery processes

• Languages: C#, SQL, JavaScript/TypeScript
• Frameworks: .NET 8, ASP.NET Core, Blazor Server, MVC
• Services: CoreWCF / service-based architecture
• Databases: Microsoft SQL Server, LINQ, ADO.NET
• Testing: MSTest, xUnit, Playwright
• DevOps: Git, CI/CD pipelines, MSBuild, NuGet
• Architecture: Layered enterprise systems, distributed services

• 5+ years software development experience
• 2+ years in a senior .NET role
• Strong experience with enterprise-scale systems
• Solid knowledge of C# and SQL
• Experience with distributed services and web applications
• Proven ability in architecture and technical design
• Agile/Scrum experience
• Relevant IT qualification or equivalent

• Retail, ERP, or transactional system experience
• Exposure to hybrid modernisation (legacy + .NET 8)
• Experience with Azure or cloud-based architectures
• Observability and monitoring tools

• Strong problem-solving and analytical thinking
• Ownership mindset and accountability
• Clear communication across technical and business teams
• Passion for mentoring and growing others
• Ability to balance delivery speed with long-term maintainability