André Wenceslau

TypeScript, Next.js, Postgres, Drizzle, Tailwind, Stripe. Generalist who goes deep on the database side. Playwright for the tests that catch real things rather than mocked ones.

Postgres internals around row level security — how the exemption rules work, and how policies behave on pooled connections. Also the unglamorous side of shipping: merchant of record, tax, licensing.

TenantForge, a multi-tenant SaaS starter built on Postgres RLS, and a small MIT repo with just the isolation pattern: github.com/wenceslauAndre/postgres-rls-multi-tenancy

Talking multi-tenant architecture, Postgres RLS, and where tenant isolation quietly breaks. Happy to look at a schema. Also curious how other solo devs handle payments from outside the US and EU.