Hello, I am starting a shipping and shopping service between the USA and Africa. Customers will request items from the USA through a mobile app or website. We will purchase the items, store them in our warehouse, and ship them to Africa. Customers should be able to track packages, make payments, and receive updates inside the app. I am looking for an experienced software architect to help plan the full system before development begins. What I need first: • System architecture guidance • Advice on best technology stack • Timeline and estimated cost • Plan for mobile app + website • Future scalability for business growth I am NOT building everything immediately. I want to start with consultation and planning first. If things go well, this could become a long-term project where you help build the platform. I prefer clear communication and simple explanations because English is not my first language. Thank you, Royi