Simple File Upload App

I want to build a lightweight application whose sole purpose is to let a user pick a file and push it to my server quickly and reliably. The core feature is the upload flow, so I am open to your recommendations on which frameworks or storage services make that experience seamless and secure... (Budget: $10 - $30 USD, Jobs: API Development, App Development, Backend Development, Frontend Development, HTML, JavaScript, User Interface / IA, Web Development)