Full-Stack Developer Needed to Launch & QA Existing SaaS App | Next.js, Supabase, Stripe, OpenAI

I have a SAAS called DIVRR that is substantially built. I just need an experienced full-stack developer to make sure it is actually functional and working end-to-end for real users. I need someone to audit the existing codebase and connect/configure the backend to third-party services: • Next.js / TypeScript •Supabase / PostgreSQL •Vercel •OpenAI API •Stripe •Resend •GitHub I already have accounts/projects set up for these services. Core functionality that needs to be tested and working includes: • Manager/admin signup and login •Employee accounts/login •Correct user roles and permissions •Manager and employee dashboards •Employee onboarding/training workflows •AI chatbot / OpenAI functionality •XP, progress and completion tracking •Stripe payments/subscriptions •Email functionality •Database persistence and Supabase integration •Secure API/environment variable configuration •Vercel deployment Budget: $100 fixed price. I need someone who can actually test DIVRR as both a manager and employee, identify what is broken or incomplete, fix it, and verify that the major workflows function correctly from beginning to end. Final deliverable: a deployed, functional SAAS Please include your experience and let me know how quickly you could complete an existing application like this, thank you!