E-Commerce Web App Guidance -- 2

I’m in the planning phase of a new e-commerce web application and want an experienced software developer to act as my technical sounding board. My goal is to make confident architectural and stack decisions before I commit budget to full-scale coding... (Budget: ₹750 - ₹1250 INR, Jobs: JavaScript, Next.js, Node.js, React.js, Software Testing, Test Automation, Testing / QA, Usability Testing, Website Testing)