Case Study

Unified Refund API

Built foundations and led rollout of a unified Refund API to third‑party payment providers.

Refunds architecture schematic for unified API.
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Summary

Senior Software Engineer

Year: 2024 - 2025

  • Payments
  • Refunds
  • Platform

Problem

Refund processing was fragmented across legacy code paths and provider‑specific logic, limiting reliability and observability. We needed a single entrypoint with parity and safety to reduce risk and simplify operations.

Approach

How the work shipped.

  • Consolidated disparate refund flows behind a unified Payments API entrypoint.
  • Established reusable patterns later applicable to captures and voids.
  • Shipped observability and safeguards to handle high‑traffic events and retries.
  • Led phased rollout to full traffic to de‑risk migration.

Impact

Outcomes and metrics.

  • Unified flow with consistent retriesReliability · across providers
  • Improved dashboards + alertsOperational visibility · refund health
  • Reduced via staged rolloutMigration risk · full-traffic launch

Stack

Tools and systems.

  • Ruby on Rails
  • MySQL
  • Kafka
  • Grafana
  • SQL

Links

Further reading.