React to React Native Migration
Jumo needed native iOS and Android apps — fast. With no in-house React Native expertise and a hard 10-week deadline, they turned to EnygmaLab to augment their team and deliver.
Timeline
10 weeks
Team Size
2 engineers
Codebase Reuse
~65%
Platforms
iOS & Android
The Challenge
A React web app. A mobile deadline. No React Native team.
Jumo had a mature React web platform serving thousands of users. Expanding to mobile was a strategic priority — but their engineering team had no React Native expertise. Traditional hiring would have taken 3–4 months. They needed senior engineers in days, not months, and a migration plan that preserved as much of their existing codebase as possible.
The Solution
2 senior React Native engineers. Placed in 48 hours.
EnygmaLab matched Jumo with two senior React Native engineers from our LatAm network — both with prior experience migrating React web apps to mobile. The engineers integrated directly into Jumo's sprint workflow, designed a shared TypeScript business logic layer, and executed a systematic component-by-component migration that maximized code reuse between the web and mobile codebases.
Delivery Timeline
From kickoff to App Store in 10 weeks.
Week 1–2
Discovery & Architecture
Audited the existing React codebase, identified reusable business logic, and designed a shared TypeScript layer for both web and mobile targets.
Week 3–5
Core Screen Migration
Migrated authentication flows, dashboard, and primary user journeys from React DOM to React Native components using a component-by-component approach.
Week 6–8
Native Features & Optimization
Implemented native capabilities — push notifications, biometric authentication, offline data sync — and tuned performance across both iOS and Android.
Week 9–10
QA, CI/CD & App Store Launch
End-to-end testing across devices, set up GitHub Actions pipelines for automated builds and TestFlight/Play Console distribution, and submitted to both app stores.
Results
Shipped on time. Exceeded expectations.
10 weeks
iOS & Android apps live on both app stores, delivered on schedule
~65%
Of existing React business logic reused in the React Native codebase
< 2 hrs
Build-to-deploy cycle via GitHub Actions CI/CD pipelines
Technologies Used
Need a mobile migration?
We have senior React Native engineers ready to integrate with your team in under 48 hours.
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