Alarm clock iOS app

This project is for an existing project - an alarm clock with exciting new feature for iPhone. We are a team of 5, headquartered in New York. we have put our after-work time into this project for more than a month. Then we realized that we need an extra hand in client side development (iOS dev). You will be the primary developer in this project, as a valuable addition to our existing iOS developer. Our project is half done, but it probably need 20-30 hours more work before it can be released to apple store. And after that, some major upgrades are planned, and we can start a new contract to continue this ongoing project. Requirements: 1) Communication: Fluent Chinese and English preferred. We expect you having experience in project-oriented workflow, and you can illustrate your idea and proposal by wire-frame, user-flow, diagram, etc. 2) Experience in Coredata and client-server communication is required. 3) Experience in working with UI/UX designers, and is able to implement the thoughts behind the design into every line of the code. Final thoughts: It will be great if you can submit some illustration of the relevant experience in "Requirements". (Picture or pdf will be suffice)