I am looking for a few mobile app developers to help in some of our mobile app projects as per client request. We may need the app in all 3 major mobile platforms (Android, iOS and Windows), so you must be experienced in at least two of those platforms and if possible can provide mobile apps in more than 3. You must have at least 5 years full-time experience working on mobile apps and can provide a portfolio and samples of your apps. A Skype account for availability queries and general communication is absolutely necessary. Upon submitting to you the app details you must be able to provide a free prototype. While bidding please provide also your prices for the above.