From a scoped spec to production, one engineer on the whole stackI build SaaS products end to end: accounts and auth, plans and billing, teams and roles, the core product flows, admin and reporting, plus deploys and monitoring. Next.js and React on the front, Node and PostgreSQL behind, AWS and Docker underneath - written by me, not passed between contractors. You get a product running in production, deploys you can watch land, and a codebase your next engineer can actually read: types, tests where they pay off, migrations and a short architecture doc.