Full-Stack Developer Needed for Pre-Launch Next.js/Supabase

We are looking for an experienced full-stack developer to help us with a nearly finished online marketplace platform that is close to launch. The website has already been built. We are not looking to rebuild the platform from scratch... (Budget: €18 - €36 EUR, Jobs: Full Stack Development, MySQL, Next.js, PayPal API, PHP, PostgreSQL, Stripe, Website Design)