Backend API development with .NET technologies, .NET 8+, C#, Github, Xamarin, PostgreSQL, HTML, Angular, Typescript, MySQL, Gitlab, Azure DevOps, CSS, SQL Server, Sql, Branching and pull-request review, GitHub Actions, Git-based workflows, React with Next.js, View State, GitLab CI, ASP.NET Web Forms, CI/CD pipelines, ASP.NET Core