React Native Mobile Application Developer | Kotlin

Winjit Technologies; Hyderabad; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Winjit Technologies in Hyderabad is seeking a skilled React Native developer to design, build, and maintain cross‑platform mobile applications. You will work across Android/iOS layers, integrate native modules, and ensure robust performance and security.

You will collaborate with backend, QA, DevOps, product, UI/UX, and security teams in an Agile setup, writing unit tests and participating in code reviews to raise quality and deliver reliable software.

Qualifications

• Strong hands-on experience with React Native and production-grade Android/iOS apps.

Responsibilities

• Design, develop, and maintain scalable cross-platform apps using React Native.
• Build reusable UI components with Kotlin and React Native.
• Develop and integrate native Android functionality using Kotlin.
• Develop and maintain React Native SDKs, native modules, and components.
• Implement JS-to-native bridging between React Native and Android/iOS.
• Integrate RESTful APIs using Axios or Fetch.
• Manage state with Redux/Redux Toolkit, Context API, and hooks.
• Handle auth, tokens, API errors, retries, and data sync.
• Optimize startup time, rendering, memory, and network use.
• Secure handling of credentials and API communication.
• Troubleshoot React Native, JS/TS, Kotlin, Swift, and backend APIs.
• Manage Android/iOS builds, dependencies, configurations, and releases.
• Write unit/integration tests and participate in code reviews.
• Collaborate with backend, QA, DevOps, product, UI/UX, and security teams.
• Provide production support and implement permanent fixes.

Skills

React Native

Kotlin

Redux/Redux Toolkit

Context API & Hooks

Axios/REST APIs

Job description

Key Responsibilities

• Design, develop, and maintain scalable cross-platform applications using React Native,


• Build reusable and maintainable UI components using Kotlin and React Native.


• Develop and integrate native Android functionality using Kotlin.


• Develop, integrate, and maintain React Native SDKs, native modules, and reusable mobile components.


• Implement JavaScript-to-native bridging and communication between React Native and Android/iOS layers.


• Integrate RESTful APIs and backend services using Axios, Fetch API, or equivalent technologies.


• Implement state management using Redux/Redux Toolkit, Context API, hooks, and appropriate application architecture.


• Handle authentication, token management, API errors, network failures, retries, timeouts, and data synchronization.


• Optimize application performance, startup time, rendering, memory usage, network operations, and application responsiveness.


• Implement secure handling of authentication credentials, tokens, sensitive data, and API communication.


• Troubleshoot issues across React Native, JavaScript, TypeScript, Kotlin, Swift, Android, iOS, native modules, and backend APIs.


• Manage Android and iOS builds, dependencies, configurations, and release activities.


• Write unit and integration tests and participate in code reviews and quality improvement activities.


• Collaborate with backend, QA, DevOps, product, UI/UX, and security teams in an Agile environment.


• Provide production support, perform root-cause analysis, and implement permanent fixes for application issues.

Key Skills & Experience Required

• Strong hands-on experience with React Native and production-grade Android/iOS

applications, including React N Role & responsibilities