Senior React Native Engineer — iOS & Android

IO TECH SOLUTIONS LIMITED; Hong Kong; On-site; HKD 600,000 - 900,000; Full time

Job summary

IO TECH SOLUTIONS LIMITED is seeking a skilled React Native Engineer to design, build, and maintain high-performance mobile apps for iOS and Android. You will collaborate with product managers, UI/UX designers, and backend engineers to translate complex requirements into smooth, native-feeling user experiences.

The role emphasizes performance, clean and testable code, and staying up-to-date with the evolving mobile ecosystem.

Qualifications

• 5+ years of professional software engineering experience with production-ready React Native applications.
• Mastery of JavaScript (ES6+), TypeScript, React hooks, and the Virtual DOM.
• Deep understanding of state management tools such as Redux Toolkit, Zustand, or the Context API.
• Experience utilizing native build systems and IDEs like Xcode, Android Studio, and Gradle.

Responsibilities

• Architect and build new features, reusable components, and front-end user journeys using React Native and TypeScript.
• Integrate RESTful or GraphQL APIs, handling offline storage, caching, and seamless state synchronization.
• Diagnose and fix performance bottlenecks, memory leaks, and UI rendering lag to ensure an optimal user experience.
• Write, maintain, and debug custom native modules or bridges when interacting with device hardware or platform-specific APIs.
• Manage the mobile release cycle, managing code signing, provisioning profiles, and deployments via Expo Application Services (EAS), TestFlight, and Google Play Console.
• Write robust unit and integration tests using frameworks like Jest or React Native Testing Library to support high stability.

Skills

React Native

JavaScript ES6+

TypeScript

Redux Toolkit

Zustand

Context API

Xcode

Android Studio

Gradle

Tools

React Native

TypeScript

Redux Toolkit

Zustand

Context API

Xcode

Android Studio

Gradle

Job description

IO TECH SOLUTIONS LIMITED is seeking a skilled React Native Engineer to design, build, and maintain high-performance mobile apps for iOS and Android. You will collaborate with product managers, UI/UX designers, and backend engineers to translate complex requirements into smooth, native-feeling user experiences.

The role emphasizes performance, clean and testable code, and staying up-to-date with the evolving mobile ecosystem.