Multi-week, milestone-based build for a new SaaS. I own architecture, stack decisions, and delivery across 3 checkpoints: (1) scoped spec + DB schema + auth/RLS + scaffolding, (2) core feature loop + billing + admin, (3) polish, tests, docs, and Vercel production deploy. For founders who want a CTO-led product, not a Fiverr one-off. Stack: Next.js 16, TypeScript, Supabase/Postgres, Prisma, Stripe, shadcn/ui.