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Fintech unicorn · Payments

Transaction reconciliation platform

Gateway MIS files ingested via direct upload or SFTP pickup into S3, reconciled row by row by Lambda-driven jobs, producing scheduled exception and full transaction reports.

AWSS3LambdaEC2CloudWatch

The problem

Multi-gateway payment flows needed a reliable final gatekeeper for every transaction.

Our approach

  1. 1Ingested gateway MIS files through direct upload and scheduled SFTP pickup into S3.
  2. 2Ran row-by-row matching jobs on Lambda with deterministic reconciliation rules.
  3. 3Generated scheduled exception and full transaction reports for finance operations.
  4. 4Instrumented CloudWatch alerting for late files and failed reconciliation runs.

Measurable outcomes

100%
Transactions passed through reconciliation
Daily
Automated exception reporting
1
Trusted general ledger

Architecture and workflow

Architecture and workflow
  1. 01

    Sources

    Payment gateway MIS files

  2. 02

    Ingest

    SFTP pickup · direct upload

  3. 03

    Store

    S3 raw and processed zones

  4. 04

    Reconcile

    Lambda matching engine

  5. 05

    Report

    Exception and GL reports

More work

Packaged snacks · LATAM and Middle East & South Africa retail

Revenue analytics across 12 retail chains, refreshed hourly

Replaced a nightly Excel-and-SSIS revenue pack with a Databricks lakehouse serving trade-spend-adjusted net revenue to 400+ commercial users across LATAM and Middle East & South Africa.

Consumer app · San Francisco

Audience business review analytics

Data lake on S3 exposed to Athena via Glue Catalog, a single-source-of-truth table refreshed by Step Functions and Lambda, and a QuickSight CXO dashboard for MAU, DAU, trial-to-subscription and revenue trends.

Global BPO / ITeS · France

Operational insights for 400 contact centres

Performance tool exports auto-synced to Azure file storage, staged and loaded by Azure Data Factory into a Synapse warehouse, with Power BI dashboards for occupancy, AUX, handled volumes and shrinkage.

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