Global User & Loyalty Migration

User accounts and loyalty point balances for one of the world's largest QSR brands needed to move across markets, but the existing process relied on manually triggered EC2 jobs and scripts. That made every migration slow, risky, and hard to audit — with millions of customer records and loyalty points on the line, any failure meant lost points, broken logins, or angry customers across multiple regions.

Designed and led engineering of a fully automated, serverless migration platform that took the manual process out of the equation entirely. Dropping a file into S3 now kicks off validation and orchestration automatically, with the same pipeline reused across markets instead of one-off scripts per rollout.

Built on an S3-triggered AWS Step Functions workflow: incoming files trigger Lambda functions for validation before Step Functions orchestrates the end-to-end migration. The pipeline integrates directly with Snowflake for data warehousing, Braze for loyalty and messaging, and DynamoDB for account/loyalty storage — all written in TypeScript and Node.js for consistency with the rest of the platform.