Hi,
I have read your requirements. I can build the courier delivery system using any tech stack of your choice. I have experience with SQL and MongoDB for the database, Flask, Django, Ruby on Rails, Spring Boot, ExpressJS and AdonisJS for backend, and vanillaJS, ReactJS, Bootstrap, Material UI for frontend.
I have 4 years of web development experience, and 1 year of DevOps, so I can handle the hosting for you too. I guarantee clean, modular, extensible and well documented code, along with a responsive UI.
Contact me in chat to discuss further.