Java, Swing, SQL expert to help us modify Unicenta oPos -- 3

We are looking for Java, Swing, SQL expert to help us modify Unicenta oPos version 4.1(open-source Java-based Point of sale system). 1. Every interface will be changed. (We already prepare all interface for every step) 2. Popular POS functionalities + some functionalities. 3. Basically server and client base. (Lan or Wan) 4. Support Cloud Based [Online] and Offline Mode. - Manages all areas of our client's retail organization including point of sale, sales back office, inventory management, Gift Card, Reward points. 5. Deli kiosk: Deli order kiosk by customer's operation. (Like Wawa deli order kiosk) 6. Shopping help kiosk: Store items information kiosk for convient shopping. 8. POS and kiosk can be easly installed on Windows, Android pad and iPad. 9. iOS and Android app: Deli order and pickup app (Same functionalities with deli kiosk. This project should be delvered until May. 25, 2016. I will send the details to selected developers only.