Looking for a Full-Stack AI Developer | Lovable · Replit · RAG · Voice AI · Flutter · Shopify

We are a fast-growing startup and we need a reliable, experienced full-stack AI developer who can hit the ground running. We have an existing product built on Lovable that is almost ready for launch but needs serious backend work before we can go live with real users. We also have a second project in the pipeline that requires building an AI-powered SaaS platform from scratch. We are not looking for someone who will figure things out as they go. We need someone who has been here before , who has shipped real AI products, dealt with the edge cases, and knows exactly what breaks when real users hit a system for the first time. Background: We started building our MVP using Lovable and got it to a point where the demo looks great. But as soon as we tested it with a small group of real users we started seeing problems edits not saving correctly, authentication issues, data showing up for the wrong users, and the whole thing slowing down under basic load. We need someone to come in, audit the codebase, identify exactly what is wrong, fix it properly, and get us to a stable production deployment. Alongside this we want to start building our second product an AI-powered customer support and lead qualification platform with voice agent capabilities. This needs to be built properly from day one with the right architecture, not another prototype that needs rescuing six months later. What We Need Help With: Auditing and stabilizing our existing Lovable-built MVP fixing authentication flows, data model issues, row-level security, save logic, and performance problems Migrating the fixed product from Lovable to a proper production environment on Vercel or AWS Building a full-stack AI SaaS platform from scratch using React, Next JS, Node JS and Supabase Integrating OpenAI and Claude APIs into the platform for AI-powered customer interactions Building RAG pipelines using LangChain and Pinecone for intelligent knowledge base search Setting up voice AI agents using Vapi or Retell for inbound lead qualification and customer support Integrating Stripe for subscription billing and payment processing Building N8N automation workflows connecting the platform to our CRM and email marketing systems Deploying everything to production on AWS or Vercel with proper CI/CD pipelines Ongoing maintenance and feature development after launch The Ideal Candidate: Has rescued broken Lovable, Replit or Base44 builds before and knows exactly where to look Has built and shipped production RAG pipelines and LLM integrations — not just tutorials Has real experience with voice AI platforms like Vapi, Retell or ElevenLabs Understands Supabase deeply RLS policies, edge functions, auth, real-time Has integrated Stripe subscriptions and webhooks into live products Can work independently without hand-holding and communicate clearly about progress and blockers Has live products or portfolio work they can point to — not just client testimonials Tech Stack We Are Working With: React · Next JS · Node JS · TypeScript · Supabase · PostgreSQL · OpenAI API · Claude API · LangChain · Pinecone · Vapi · Retell · Stripe · N8N · Vercel · AWS Engagement: We are looking for someone available at least 20 hours per week with the possibility of going full time as the projects grow. This is a long-term engagement if the first project goes well we have three more lined up and we want one technical partner we can rely on across all of them. How To Apply: Do not send a generic proposal. Tell us specifically what broken vibe-coded apps you have rescued before, what AI systems you have built in production, and share links to anything live you have shipped. We will respond to every application that gives us real specifics and ignore everything else.