Build a backend with clear boundaries.

The build layers

A few moving parts are involved here. The points below cover each of them, so you can see the full scope before deciding where to start.

• Interface: clear states and accessible workflows.
• Auth: session, verification, reset and role boundaries.
• Database: normalized tables, relationships, timestamps and constraints.
• Security: grants, row level security and server-side privileged operations.
• Integrations: secrets, functions, webhooks, email and payments.

Build in dependency order

Work through these steps in order. Each one builds on the last, so resist skipping ahead even if a step feels familiar.

1. Model records and relationships.
2. Secure tables and functions before exposing the UI.
3. Wire one happy path with loading and error states.
4. Add integrations with retries and idempotency.
5. Test a normal user and negative permission paths before launch.

Security rules that matter

This comes down to a handful of concrete details. Work through the list below and flag the ones you have not covered yet.

• Every public table gets explicit grants plus row level security before the UI reads it.
• Roles live in a dedicated table, never on the profile row.
• Service-role operations run only inside server-side functions.
• Secrets are stored in the backend environment, never in client code or the repository.
• Policies are tested as a real user and as an anonymous visitor.

Go live checklist

Work through these steps in order. Each one builds on the last, so resist skipping ahead even if a step feels familiar.

1. Run a security scan and resolve every critical finding.
2. Test sign-up, login, reset and sign-out on the real domain.
3. Submit every form once and confirm the data lands where expected.
4. Check email delivery, webhooks and payment callbacks end to end.
5. Verify metadata, sitemap and canonicals on public routes.
6. Record the architecture so future changes start from knowledge, not archaeology.