Senior Full-Stack Developer — AI Marketing Studio

A multi-brand AI marketing workspace We operate multiple brands, and our marketing work currently scatters across AI chat tabs, Canva, spreadsheets, and WhatsApp threads. The Studio replaces that with a single workspace that keeps everything — campaigns, audiences, creatives, approvals, and reusable assets — in one place. It is used by 2–5 people on our marketing team. Its job is to move from an idea to a ready-to-export branded creative, with AI writing the first draft and a human owning every decision. Brand context — tone, palette, claims, products — switches cleanly between brands; no cross-brand data ever leaks. The specification is complete. The environment is fully set up. Vercel Pro, Neon Postgres, Cloudflare R2, Langfuse, and all environment variables are provisioned and ready. You will be granted access to our GitHub repository and our Vercel project — you push code and deploy there, not to your own accounts. No infrastructure setup, no account creation. We have a 41-screen interactive prototype, a 400-line developer handover, the full Postgres schema, 25 per-skill contracts, a 12-state async job machine, and a 62-case test plan. Your job is to build and ship.