[ 01 ] PropTech venture (US) — Flagship
Books that reconcile to zero.
A US PropTech venture needed one platform to carry residential, commercial, and HOA portfolios — with books a CPA could trust. We built the full multi-tenant SaaS, including a complete double-entry accounting engine: rent posting, late fees, owner distributions, and trust accounting that must reconcile to zero. Three developers built in parallel under strict domain ownership.
- Tenant isolation
- 39 tables under forced row-level security
- Ledger integrity
- Immutable journal entries, enforced by database triggers
- Money math
- Integer cents throughout. No floating point, ever.
- Reconciliation
- Bank-statement import via CSV and OFX
- Quality gate
- 130+ automated tests gating CI
An accounting core a CPA can audit — built in months, not years.
General journal — append-only