Legacy templates migrated to a modern React architecture — without downtime.
Inherited a legacy stack with Handlebars (HBS) templates and migrated it to React components gradually, without stopping production.
Designed a custom architecture using Singleton, RxJS streams, and Flux-style state management to handle complex UI flows and real-time updates.
Worked inside a strict release process and internal regulations — integrating modern frontend practices into an existing enterprise environment.
