Must be proficient in using Wireframe Tools and Project Management Tools.
Must be proficient in understanding various Mobile OS, Development and Cross platform Frameworks, Architectures and Databases
Must be proficient in various APIs and external interfaces like (Location based, maps, chat and messaging, charting, social APIs, payment gateway etc)
Knowledge and integration of client/server communication and data transfers like Rest API, XML, Json, Batch processing
Understand various server and hosting platforms like Virtual, Dedicated and Cloud storages
Must be proficient in knowing various marketplaces and application submissions rules (Play Store, ITune, Amazon, Windows store)