Customize Magento Import to support Inventory Import

We need a developer with extensive experience working with Magento 1.9 and preferably one who has experience working with the BoostMyShop ERP package for Magento. We are using the BoostMyShop ERP package for inventory management. We need a developer to help us import our existing stock information for product quantity, warehouse location and shelf location (some products may exist in multiple shelf locations and in multiple warehouses). We need an automated import to take data from our mySQL based inventory tables and import that data into the Magento ERP system. Specifically, it must import: --SKU --Quantity on hand --Warehouse Location --Shelf location --Multiple barcodes The script must be able to run daily on an automated basis to update changed inventory levels within the Magento inventory. We are currently importing our inventory and product data using the Magmi import tool, but it does not provide support for the BoostMyShop specific fields. An extension to Magmi that accomplishes our custom needs is an acceptable solution is preferred, but a stand-alone script is also an acceptable solution. TO BE CONSIDERED: -The Developer or Development team must have documented experience working with Magento. Experience working with the the BoostMyShop ERP software strongly preferred. -All work must be done on our development servers. We will provide an initial payment of %30 of the project total payed in advance and will work with the selected developer to set reasonable milestone payments that ensure the developer is compensated fairly. -The working environment will be a Ubuntu Linux server hosted in the AWS cloud. The chosen developer will work closely with our in house teams. -To be considered, the developer must submit a summary of their understanding of the project along with a brief technical explanation of how they will accomplish it. We have a large number of projects and wish to establish a long term relationship with reliable programmers and designers. Developers providing code samples of Magento related development will be given the highest consideration.