A leading Middle Eastern quick-service restaurant brand faced critical performance issues with their mobile ordering app, which took 7 seconds to load and had a 5% failure rate. The project, handled by RailsFactory, involved migrating from separate iOS/Android codebases to a unified React Native framework integrated with a Rails backend. Key optimizations included fixing inefficient order listing queries (handling 60M records), introducing GraphQL to prevent over-fetching, and implementing robust DevOps practices with Maestro and Sentry.

Within six months, load times dropped to under 3 seconds, failures fell to 0.5%, and backend query speeds improved by 71%. This modernization not only stabilized the infrastructure for high-volume order processing but also boosted app ratings and developer velocity, proving that targeted refactoring over full rewrites can yield massive ROI.