Windows app document store

I'm looking for a professional developer to create a Windows app document store for me. The app will store PDFs, and the documents will be organized by drawers. Additionally, security is paramount and the app should implement the best practices in terms of data protection - such as AES 256-bit encryption and SSL/TLS Certificates. Two-factor authentication is also highly desired. Depending on the degree of complexity of this task, I am prepared to invest a reasonable amount of money in order to get it done right.