Scaling FinTech Transaction Ledgers: Double-Entry Bookkeeping & Advisory Locks

Eliminating race conditions in financial balance updates using pessimistic locking, ledger immutability, and sub-second payment settlement.

How to architect immutable double-entry transaction ledgers, PostgreSQL advisory locks, and idempotent payment webhooks handling thousands of concurrent transfers.

Led by: Salim Moustanir — Founder & Principal Software Architect (Certified by Anthropic & Dubai Future Foundation).

Engineering Squad: 15 Senior Architects across Core Systems, Autonomous AI, Frontend WebGL, and Security/QA.

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Scaling FinTech Transaction Ledgers: Double-Entry Bookkeeping & Advisory Locks | SAWTT