Full-Stack Developer Needed for Viral Faceless Content SaaS (AI + Firebase + Stripe)

I am looking for an experienced full-stack developer to help build and finalize a SaaS AI platform designed to create viral faceless content for TikTok, Instagram Reels, and YouTube Shorts. The concept is similar to shortmake.com and remakeit.io, but with one key difference: the platform must constantly adapt to current social media trends and allow users to generate the type of content that is going viral right now.

The frontend is already partially developed, but I need a developer who can complete the backend (using Firebase) and also refine or expand the frontend when needed.

Core Requirements:
1. AI Content Generation
• Talking babies, animals (monkeys, cats, dogs, etc.).
• Objects that speak (fruit, bottle, chair, etc.).
• Objects cut or transformed into improbable shapes or materials.
• AI voices/singers synced to music.
• “Did you know?” educational carousels.
• Celebrity or historical POV (e.g. “One day as Julius Caesar”, “One day as Cristiano Ronaldo”).
• Meme-style content based on the latest viral trends.
2. Logic & AI Integration
• Must support connecting APIs from providers such as OpenAI, ElevenLabs, and others as required.
• Trend-adaptive: ability to easily add new templates matching current TikTok/Instagram trends.
• Output: 9:16 vertical videos optimized for TikTok/Reels/Shorts.
• Auto-captioning with viral emojis.
• Option to generate carousels (multi-image posts).
• Automatic content creation stored in the user’s dashboard (with limits based on their subscription plan).
3. Payments (Stripe Integration)
• Subscription-based model with multiple tiers (Starter, Growth, Pro).
• Immediate access when upgrading.
• Secure payment flow directly via Stripe.
4. Dashboard (User + Admin)
• User dashboard: create, manage, and download AI-generated content.
• Admin panel: manage templates, users, payments, and monitor system performance.
5. Tech Requirements
• Backend built with Firebase.
• Ability to integrate multiple AI APIs (OpenAI, ElevenLabs, others).
• Strong Stripe integration skills.
• Ability to adjust/expand the frontend when needed (frontend is already partially designed).
• Scalable and secure backend architecture.

Deliverables:
• Fully functional backend (Firebase + API integration + Stripe).
• Admin panel for managing users, templates, and payments.
• API endpoints connected with frontend.
• Improvements or adjustments to the frontend where required.
• Documentation for smooth handover and scaling.

Skills Required:
• Proven experience with SaaS development.
• Strong background in AI integration and API connections.
• Expertise in Firebase backend development.
• Stripe integration knowledge.
• Full-stack capabilities (backend + frontend adjustments).