Context
Payment reconciliation across multiple currencies is unforgiving. Small discrepancies compound into real financial and regulatory risk. The reconciliation workflows were complex, and testing them manually left gaps that only surfaced once they reached production.
The problem
Defects in reconciliation logic were slipping through to production because manual testing couldn't cover the combinatorial explosion of currencies, edge cases, and failure modes. Each production defect was costly to trace and correct.
Approach
We built automated API-level and end-to-end coverage for the reconciliation flows, focusing on the currency and edge-case combinations most likely to break. The suite was integrated as a release gate in CI/CD so no build could ship without passing reconciliation checks. Reporting was made readable so failures pointed straight to the cause.
Tech stack
Outcome
Defects reaching production dropped by roughly 80%. Reconciliation issues were caught before release rather than after, reducing both financial risk and the time spent firefighting.
Published July 2026