Full-Stack Dev to Build AI SaaS MVP (Video-to-Blog Tool) Next.js/Node, LLM API integration

I'm a solo founder building an AI-powered SaaS product. I need a full-stack developer to build the MVP end-to-end. Do not apply if you have not shipped a production OpenAI Whisper integration before. Applications without specific examples of relevant prior work WILL NOT be reviewed. WHAT WE'RE BUILDING (Video-to-Blog) A tool that takes a video URL (YouTube/uploaded file), transcribes it, and generates a publish-ready SEO blog post using an LLM. Core flow: 1. User submits video link or uploads file 2. Backend extracts/transcribes audio (Whisper API or similar) 3. Transcript sent to LLM (Claude/OpenAI API) with SEO-optimized prompt 4. User can edit output in a simple dashboard 5. Export as Markdown/HTML or push to WordPress via API TECH STACK (open to your recommendation, but this is our default) - Frontend: Next.js + Tailwind - Backend: Node.js or Python (FastAPI) - DB: Postgres (Supabase is fine) - Auth: Clerk/Supabase Auth - AI: Anthropic or OpenAI API - Hosting: Vercel + Railway/Render SCOPE OF THIS ENGAGEMENT - User auth + billing (Stripe, subscription-based) - Video ingestion + transcription pipeline - LLM prompt pipeline for blog generation (I'll provide prompt logic; you implement it robustly with error handling/retries) - Basic dashboard: submit, view drafts, edit, export - Deployed, working product, not just local dev NOT IN SCOPE (for now) - Mobile app - Team/multi-user accounts - Advanced analytics WHAT I NEED FROM YOU - Architecture recommendation before we start (brief written plan) - Weekly async updates (Loom or written), I don't need daily calls - Clean, documented code I can hand to another dev later if needed - Deployed staging environment I can test throughout, not just at the end BUDGET & TIMELINE Fixed price: $2,500 for MVP, paid in milestones (see below). Target timeline: 4–6 weeks for a working MVP. Strong potential for ongoing/future work if this goes well. TO APPLY Please answer the screening questions below in your proposal. Generic/copy-paste proposals will not be considered.