Technologies
My primary programming language is C#, I use it to develop most of my projects.
For backend I usually use C# web framework, named ASP.NET Core, which allows me to create high performance secure applications of any level difficulty. But if your main priority is fast development and deploying, I can use python with flask or django frameworks which will significantly decrease time of development sacrificing performance. Nevertheless, as an experienced backend developer, I can use any technological stack you require.
Also, if you don't want to employ a frontend developer, I can create simple UI using html/css/vue.js.