Job description
We are looking for a person who will import our data into the MongoDB database possibly write an importer (such a solution would actually be more beneficial for us, because in the future we could do such an import ourselves). The web application is written in node.js and React, unfortunately, the person who did this for us seems to have been hitting the ground running and ultimately failed to meet his obligations. Something was uploaded there manually it seems. The operation of the application from the frontend side we like, unfortunately there is a problem with the import. It would be necessary to analyze the operation of the current application, the packages installed in app (in json), to know the structure of this database that is created. We note in advance that the rows to be uploaded are several million, so it must work efficiently.