Transaction Monitoring System

Real-time rule engine that watches every money movement at Xendit and raises alerts for compliance review.

Risk and compliance needed to spot suspicious activity across all products as it happened, and to change rules without a deploy.

As architect in a team of six:

The core real-time rule engine: it consumes events from every money service and evaluates CEL rules over per-merchant features.
A rule management UI, so risk and compliance teams author and test rules themselves.
Deduplicated alerts fed into a third-party case management system for investigations.
ETL pipelines that combine transaction data from multiple upstream sources.