Full Stack Developer:
1. Frontend developer: Angular, JQuery, XML, JSON, Ajax, HTML, CSS, Javascript.
2. Backend developer: Java, Spring framework, Node.js, PHP, .NET, MongoDB
3. Mobile developer: Flutter, iOS (iPhone, iPad), Windows Phone, Xamarin, UWP.
4. Desktop developer: Windows Presentation Foundation, Universal Windows Platform, Java.
5. Cloud: GCP, Azure, AWS