PrestaCRM — Loan & Credit Portfolio Management Platform
Specialized operating system for credit entities, lenders, and loan portfolio managers
Project Overview
PrestaCRM was engineered by ProxyPattern as a purpose-built operating system for small and midsize credit operations. It replaces fragile Excel spreadsheets with an immutable double-entry financial ledger, French amortization schedule locking, AI/rules risk scoring, and idempotent WhatsApp collection automation.
The Challenge
Financial software has strict constraints: once a transaction occurs, the system must preserve immutable financial state rather than simply overwriting records. Small lending operations frequently struggle with spreadsheet formula corruption, uncalculated late fees, lack of audit trails, and hours wasted chasing payments manually across messaging apps.
Technical Constraints
The platform required strict double-entry ledger invariants to guarantee zero balance drift, multi-tenant isolation at the Prisma ORM query boundary, and idempotent event dispatchers to prevent duplicate borrower WhatsApp notifications during network retries.
Technologies & Architecture Stack
Immutable Double-Entry Financial Engine & WhatsApp Dispatcher
We designed a multi-tenant credit management architecture built around strict financial accounting rules:
Key Measurable Outcomes
- Engineered an append-only double-entry financial ledger that guarantees 100% mathematical accuracy and zero balance drift.
- Implemented an idempotent WhatsApp dispatch queue preventing duplicate payment reminders during network retries.
- Delivered a full-stack multi-tenant loan lifecycle engine from public applicant intake to automated risk scoring and settlement.
Interested in PrestaCRM or custom financial software?
PrestaCRM is currently opening its first group of lending operations in the Dominican Republic. If you need a custom platform engineered or want to evaluate PrestaCRM for your portfolio: