appsheet developer

I am looking for an experienced AppSheet developer to help me create an invoicing and stock register application. I do not have a data source at the moment, so I will need help with this as well. I am looking to get the project completed within 1-2 weeks so I need someone who can begin the development process as soon as possible. The ideal candidate should understand how to integrate a data source with an AppSheet app, have strong experience in workflow automation, and be available to begin work right away. If this sounds like something that you could help with, I would love to hear from you. Thank you.