💡 Migrating a Legacy System Handling $1B+ in Transactions — A Multi-Part Journey

Jun 4, 2025 · 2 min read · A few years ago, we migrated a mission-critical system from PHP Laravel to Node.js — with full data migration, near-zero disruption, and a system that handled over $1B in transactions. It was one of the most challenging (and rewarding) backend projec...