I have been developing web applications since 2006 year (https://eterio.com/Home/EterioMessageBoard), with or without databases. I participated in the development of LMS, Internet stores, several CMS, and applications for telecommunication companies (hardware monitoring system, natural gas network monitoring system), a system for a security company, an application for a hospital, a delivery service and others. I primarily use Microsoft's technologies for the backend: ASP.NET (Classic), ASP.NET MVC, Core, Blazor, MS SQL, Entity Framework, LINQ, Bootstrap, jQuery, and JavaScript. Full portfolio on https://eterio.com