Hi QuickBooks developer,
I will have many small simple QuickBooks projects. You actually do not need to write QuickBooks add-ins. You only need to convert data from our format to IIF format of QuickBooks. We have sample code already. We also have sample data for different version of QuickBooks. However, users may need to add some more columns or remove some columns then you will need to read the structure of Quick Books IIF headers (Search on QuickBooks Help). You also need QuickBooks version 2007 and up in order to test data to import. If you have many QuicBooks version, it would be a plus.
Actually the nature of this project is to convert text file to text file which follows strictly the rule that QuickBooks requires. You do not need to be a master of QuickBooks. If you are dedicated we can train and pay for training fee so you can research. We do not need the solution that used QuickBooks SDK. If you have time and ready to research we are willing to pay some amount so you can research. The coding is not a problem because it's just Vbscript to convert text file. We also have sample script that you can follow. If you are not good at research new thing you should not get involved into this project.