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Yazen Mbarek

@yazenmbarek

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React Native Developer at MOBELITE who built an offline-first sync system that reduced API load by 40%.

Tunisia

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At MOBELITE, I developed a background cross-platform SDK to automate user action tracking, reducing manual intervention by 90% and increasing analytics accuracy.

I built a lightweight, offline-first sync system for React Native that reduced API load by 40%. I also engineered an encrypted Realm database using SHA-2 and AES standards.

I implemented native Android modules in Kotlin and Java for a React Native app, bridging device-level features to JavaScript and supporting the cross-platform tracking SDK. I also constructed authentication systems using OAuth 2.0, NeoID, and Keycloak.

My work at MOBELITE also included multi-step forms, Firebase push notifications, Jest unit tests, and CI/CD pipelines with Fastlane and Bitrise. Earlier, I created reusable front-end modules at WIMOBI and developed mobile application components at BILLCOM CONSULTING.

Experience

Work history, roles, and key accomplishments

React Native Developer

Mobelite

Feb 2022 - Jan 2026 (3 years 11 months)

Implemented native Android modules in Kotlin/Java for a React Native app and developed a background cross-platform SDK for user action tracking. Engineered secure authentication systems and an offline-first Realm database, and integrated Firebase push notifications.

React Native Kotlin Java OAuth NeoID Keycloak Realm SHA 2 AES Firebase React Hook Form Zod Jest Fastlane Bitrise CI CD

React Native Developer - Internship

Wimobi

Aug 2021 - Nov 2021 (3 months)

Created front-end modules with maximum code reusability and efficiency, and refined app performance using profiling tools and code splitting.

React Native Code Splitting Profiling

React Native Developer/ Internship

Billcom Consulting

Jul 2020 - Sep 2020 (2 months)

Developed UI and mobile application components from wireframes and prototypes, and worked with REST APIs, document request models, and offline storage.

React Native REST APIs Offline Data Storage

React JS Developer

Mobelite

Designed scalable, responsive web apps using React JS and Tailwind CSS, and implemented web features such as LocalStorage and browser events to enhance interactivity.

React Tailwind Local Storage Browser Events