Personal details
Feninekh C.
About
Senior React Native Engineer with 5+ years of experience building and shipping production mobile applications across logistics, marketplaces, healthcare, and real-time systems.
Deep hands-on expertise in React Native, TypeScript, Expo, Swift, Kotlin, background services, geolocation, offline synchronization, release engineering, and mobile observability. Experienced owning mobile products end-to-end, from architecture and native module development through CI/CD, App Store / Google Play delivery, production debugging, and performance optimization.
At Maystro Delivery, rebuilt the Driver application from scratch and implemented production background location tracking for a logistics network spanning multiple North African markets. Comfortable solving device-specific Android behavior, integrating native iOS/Android capabilities, and designing resilient mobile workflows for unreliable connectivity and real-world field conditions.
Core Skills
React Native · TypeScript · Expo · Swift · Kotlin · Background Location · Native Modules · Offline Sync · WebSockets · Redux Toolkit · Firebase · Expo EAS · GitHub Actions · Fastlane · Stripe · REST APIs · Crashlytics · Firebase Performance · Jest · Detox · Sentry · CI/CD
Work Experience
Own the mobile engineering stack for Maystro Partners and Maystro Driver, production logistics applications used across North Africa.
- Rebuilt the Maystro Driver application from scratch, owning mobile architecture, backend integration, native modules, release engineering, and production delivery.
- Migrated legacy JavaScript class components to TypeScript and a feature-based architecture using Redux Toolkit, typed navigation, and hook-driven screens.
- Implemented production background-location tracking using native Swift and Kotlin modules for active logistics workflows.
- Built offline location queueing and synchronization so driver positions are retained during unstable connectivity and transmitted when the network recovers.
- Solved Xiaomi and Oppo background-execution restrictions by redesigning the tracking strategy to maintain reliable driver location updates.
- Developed native modules for printing, biometrics, and background services where React Native abstractions were insufficient.
- Set up Expo EAS, GitHub Actions, feature flags, Remote Config, and phased rollouts to reduce deployment risk.
- Added Crashlytics and Firebase Performance monitoring and mentored 3+ engineers through code reviews and architecture guidance.
- Supports 50K+ app downloads, 20K+ active users, and peak sessions of roughly 2K concurrent users.
Skills & Technologies: React Native · TypeScript · Swift · Kotlin · Background Location · Native Modules · Offline Sync · Redux Toolkit · Firebase · Expo EAS · GitHub Actions · Crashlytics · CI/CD
Built OnlySkills, a creator marketplace shipped across iOS and Android within a small distributed team.
- Developed the React Native / Expo application end-to-end across marketplace, messaging, feed, maps, and payment workflows.
- Implemented real-time chat using WebSockets.
- Integrated Stripe payment flows for creator transactions.
- Set up Expo EAS and GitHub Actions, reducing manual release effort by approximately 70% and enabling same-day hotfixes.
- Increased automated test coverage to approximately 85% across critical messaging and purchase flows using Jest and Detox.
- Worked remotely across time zones with product and engineering stakeholders.
- Shipped the product through both App Store and Google Play production releases.
Skills & Technologies: React Native · Expo · TypeScript · WebSockets · Stripe · Supabase · Maps · Jest · Detox · Expo EAS · GitHub Actions