I need someone to develop a secure, easy to use, and simple UI. It should be easily expandable, especially to mobile platforms. It will be hosted on an ubuntu server, along with a pool, so you have to be careful not to damage any existing programs running on the server. Please start your proposal with 12345, so I know you aren't copying and pasting some long paragraph and not bothering to read the project description. Lower bids would be preferred, however if someone bids $25 less then someone else, and the higher priced bidder can also develop an app for it, they are preferred. I have rough sketches of what the wallet should look like, and a basic list of functions for it to have.