Tadit Mac Desktop Console

We are a new IT StartUp building a Product cater to Online Examination. It's a desktop application meant for both Windows & Mac. We have already built the solution for Windows (Presentation Layer + Web Services) and now wants to build the Presentation Layer for Mac. As of now, we don't have the Mac development experience at our end. Hence looking for a freelancer who can help us to build this Mac Desktop application. This module need to replicate the features already built for Windows and same will be provided as reference. Technical Features expected in this Mac Application 1. [ Modal Mode ]: To enable one particular features, the GUI need to be displayed to user in Modal mode. During this time, user shouldn’t be allowed to open any other applications. 2. [ MS Office Integration ]: To enable one particular features, application should able to open Word Or Excel or PowerPoint or PDF and allow the users to create new File and once done, make the new file available as attachment. While opening Word/Excel application for content writing, user should be prohibited to open any other file using File Menu option of word/excel/PowerPoint application. 3. [ Reading/Writing Data via Restful API ]: The desktop application required to interact with backend via Restful API. 4. [ Zip/Unzip ] : Server sends data to Client as a Zip file where content defined in a predefined structure. You need to unzip and display the data in required format and allow users to edit. Once edit done, zip the data again and upload it to Server via Restful API calls. 5. [ Disable Internet/Bluetooth when Required ] : A particular feature required, all form of Network connection need to be disabled.