The neobank relied on end-of-day batch files to reconcile debit card clearing files with internal customer account balances. Delayed clearing files resulted in occasional temporary overdrafts and manual account adjustment backlogs for accounting teams, while customers experienced delayed pending transaction updates in their mobile apps.
Automating Real-Time Transaction Reconciliation and Double-Entry Ledger Sync for a Neobank
A digital banking startup serving two hundred thousand active account holders needed to eliminate daily transaction reconciliation errors between its mobile app and core banking ledger.
Challenge
Solution
FlipWorks engineered a real-time double-entry ledger engine built on PostgreSQL and Kafka. The system ingests card authorization and clearing messages instantly, records immutable debit and credit event pairs, and updates user account balances in milliseconds without database locking.
Result
- Automated 100% of transaction reconciliation between debit card processing networks and core customer ledgers.
- Eliminated temporary overdraft occurrences caused by delayed batch clearing file reconciliation.
- Delivered real-time pending transaction updates to mobile app users within milliseconds of card swipes.