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This is a very basic project, that we'll give us an idea if a bigger project it able to be done like that or not, we want it to be built in HTML in frontend and Ruby on Rails in backend, basically the project expectations are 2 screens, first one it's a very simple form to upload an excel file, XLS, XLSX, or CSV, that will have at least 9 columns with data in them, with no limit in the number of rows, the form should be able to reject unsupported format files, the backend will parse the data in the excel file and will store the valid data into a table on the DB of the app, a timestamp will be created for each row and another field on the table with the name of the submitter hardcoded. Second screen will show up the results of the parsing in a grid or the errors found in case anything is found, like a bad number or something else. The app will be built based on those specifications any other feature or decision will be discussed in between both parties in case it's required. Your bid will be considered only with rough plan of how the app will be built and if you'd like to work in agile way.
Attached there are 2 files, one with a rough example of the form, and the other it's an excel file similar to what is needed to be done.