Android Development using tools:
1) - Eclipse
2) - Android Studio
having following expertise
1) - MVC, Views, Lists
2) - Activities, Intents Layouts ,
3) - Action Bars
4) - Fragments & Tabs with View Pagers
5) - SqLite Database
6) - File System
7) - Memory Management
8) - Multi Threading ,AsyncTask
9) - Preferences
10) - Animations, Customizations, UI’s
11) - Google Maps, Location Services
12) - Animations
13) - Extensible Messaging and Presence Protocol (XMPP)
14) - Services & Remote Database (JSON, XML)