I am expert in the following :-
- Android - All kind of parsing (XML, JSON, RSS, SOAP, WSDL)
- USB Peripherals communications.
- Well known MVVM architeture
- Android architetural components
- Socket communications.
- All kind of API (Twitter,Facebook,dropbox,gogleDrive)
- Fire base
- Super sonic ad's integration
- XMPP
- Wowza Server
- Google API (Map,Place,Drive,Analytics)
- Encoding/Decoding - Data upload/Download
- Database(Core Data,Sqlite,Plist)
- Audio / Video - In-App Purchase
- Bar Code,Qr Code - Animations
- GeoLocation - Chart Integration (Pi,Bar)
- Push Notification (Local / Server Side)
- Ad Integration
- iBeacon
- Meterial Design