Help on marketing and sales for a ready software

We've developed a data integration and automation software (standalone application) that can easily automate daily manual tasks in different industries for small businesses. Such as: Accounting (account reconciliation), Sales (spreadsheet matching), Manipulating different excel files, etc... The tool can run on the background so you set it once and then forget it, it will just do whatever you teach it to do on a predefined schedule. It can also be used for complex data migration from files to Database or from Database to Database. We do not have a selling strategy yet, that's why i m referring to Freelancer. We would like to deal with someone to act as our selling antenna who's able to sell this product whether by user license or even selling the source code if there is an opportunity. We are also in course of developing a website for this tool.