I work as a Android developer I was working in https://play.google.com/store/apps/details?id=karatpay.karatbars.com.karatpay&hl=en&gl=US, and IOS developer too.
as well, I have knowledge on .NET for web developments, apis, backends and frameworks.
I have knowledge on PHP web development, with symphony 4 framework.
And I have knowledge on fron end, with react js, javascript, css, html, ajax and others.