Full-Stack Developer Wanted – AI Image & Video Generation Platform We’re looking for a full-stack developer to build a production-ready AI image & video generation platform. This is not a prototype – we need a stable, scalable system ready for real users. Core Features 1. User accounts & billing o Stripe integration (with invoicing support). o Subscription options: monthly, yearly, one-time bundles, top-ups. o Configurable per-model costs and quotas. 2. Credits & packages o Token/credit-based system tied to models. o Free users can generate limited outputs → their creations are public and displayed in a gallery (Artwork Creations). 3. Generation workflows o Images: prompt → queue → preview → download. o Videos: async jobs, webhook/polling, progress tracking, retries, final download. 4. Admin console o Manage model prices, daily/monthly caps, credits, refunds/compensations. o Track per-model spend, margins, and user statistics. 5. Content rules o Respect all provider attributions. o Never remove or alter watermarks (e.g., SynthID). 6. Storage & CDN o Store and serve outputs via CDN. o Auto-cleanup policies for storage management. 7. Analytics & logs o Usage per user/model, error logs, provider costs. 8. UI/UX & accessibility o Bilingual interface. o Light/dark theme switcher. o Clean, responsive design for desktop & mobile. Tech Preferences (open to your proposal) • Frontend: React/Next.js (TypeScript). • Backend: Node.js (NestJS/Express) or Python (FastAPI). • Database: Postgres. • Queue/workers: Redis / Cloud task queue. • Hosting: major cloud provider with CI/CD. • Clean architecture, environment-based config, secrets management. Compliance & Reliability • GDPR-friendly data handling, cookie consent. • Respect provider ToS, rate limits, watermarking requirements. • Robust error handling, exponential backoff, idempotent webhooks. • Security basics (OWASP), role-based admin access. Deliverables • System design (ERD, sequence diagrams, provider API flows). • Implemented (not prototype) with tests (unit + E2E happy paths). • Admin panel, billing, credit ledger, and generation flows wired to live APIs. • Monitoring (health checks, error tracking). • Bilingual UI, referral codes, couponing, watermark-aware previews, export-to-social. • Dynamic pricing rules (margin-based), downloadable usage reports. • Documentation + knowledge transfer session. APIs to Integrate • Gemini Imagen, Nano Banana, OpenAI, Leonardo AI, Artlist AI, Pollo AI Candidate Screening – Please answer concisely: 1. Relevant experience: links to AI generation platforms or API integrations you’ve built (esp. Gemini, OpenAI, Leonardo, Pollo, Artlist, Nano Banana). 2. Proposed stack & architecture: your rationale for frontend, backend, queue, storage, and CDN. 3. Async video jobs: how would you handle job status, webhooks, retries, and partial failures? 4. Cost control: how to track provider spend per request, enforce rate limits, and prevent runaway costs? 5. Security & compliance: GDPR, secrets, multi-tenant safety, watermarking requirements. 6. Timeline & availability: your estimated duration. 7. Handover quality: how you provide tests, docs, and short admin training at the end. If this matches your skills, please reply with a short Loom video or written outline of your approach.