I untangle messy systems
and make them work again.
Legacy migration, system design, full-stack development. Laravel, Next.js, PostgreSQL.
Expertise
Legacy Migration
I incrementally transition legacy PHP monoliths to Laravel using the Strangler Fig pattern. The existing system keeps running while the new system is built independently alongside it.
System Design & Architecture
Multi-DB architecture, authentication design, payment systems, ledger design. I document every design decision with ADRs so technical choices are traceable and reversible.
Full-Stack Development & Payment Integration
From Laravel + Livewire backends to Next.js frontends, including TossPayments and Kakao OAuth integration. Specialized in the Korean market ecosystem.
Case Studies
22M Monthly Visitors Community — Legacy Migration
Led the Laravel migration of a major Korean community site running on 2,300+ raw PHP files across 7 distributed MySQL servers.
Adopted the Strangler Fig pattern to build the new system independently without stopping the existing one. Designed a dual-DB architecture that keeps legacy databases read-only while all new features write to the new PostgreSQL cluster.
P2P Lending Platform — API Integration & Infrastructure
Designed a unified adapter pattern integrating REST APIs from 5 loan comparison platforms, each with different auth methods, request formats, and callback structures. Built async loan review callback pipelines with platform-specific retry policies.
Migrated a monolithic Laravel app to Managed Kubernetes, reducing downtime from 30+ minutes to under 3 seconds.
Let's work together
Need a legacy system diagnosis, migration strategy, or Laravel development? Get in touch.
lq1fr5mjh@mozmail.com