Full AI Dev Build AI Video-Generation SaaS (fal.ai)Must Have Built Something like pollo, higgsfield

We're building a web app that lets marketers generate short video ads from templates, powered by multiple AI video models through an aggregator (fal.ai). Think a focused, marketing-oriented take on Pollo / Higgsfield. The UI/UX is being designed in Figma (we'll hand you polished screens) — we need an experienced developer to build it and get a testable V1 live fast. The key requirement: You must have already built a similar product — an AI video or image generation app/SaaS (text/image-to-video, generative media, credit-based generation tool) — and be able to show it live. If you've done this before, you know the pitfalls and can move quickly. That's exactly who we want. What you'll build (V1 core) Generation flow calling video models via fal.ai (or Replicate): submit job → handle the async result via webhook → store output in S3. A template-driven generator (pre-filled ad type / hook / setting) plus a quick "describe your idea" box, with a model selector. Your own authentication + a credit / "video"-based billing system with Stripe (subscriptions + one-time top-ups + free welcome credits). A JWT auto-login bridge from our existing app into this one. "My videos" library + account/billing screens (designs provided). Must-have A demonstrable similar project you built — share the LIVE link and describe your exact role. Integrating generative AI APIs asynchronously (queues/webhooks) — fal.ai / Replicate or equivalent. Stripe (or similar) billing/credits experience. AWS S3 + media handling; auth / JWT. Full-stack: React/Next.js front end + Node or Python back end. Nice-to-have Multi-language (i18n) — we serve EN / ES / FR. Hands-on with specific models (Kling, Veo, Seedance, HappyHorse, etc.). Please read All code/assets must be your original work or code you have the legal right to reuse — no reuse of a previous client's proprietary code. Full IP transfers to us, and we'll sign a mutual NDA. We work in fixed-price milestones, starting with a small paid first milestone, then ongoing if it goes well. Timeline: We're moving now — start this week, launch a testable V1 fast. To apply, include: A LIVE link to the most similar project you've built + your exact role on it. One or two lines on how you'd handle the fal.ai → webhook → S3 generation flow. Your availability (hours/week) and whether you're good with fixed-price milestones. Start your reply with the word "ORIOM" so we know you actually read this. Generic copy-paste proposals will be ignored.