Mobile App Developer (ios, React, Flutter)

Synapseindia; Kolkata District; On-site; INR 1,200,000 - 2,000,000; Full time

Job summary

Synapseindia seeks an experienced mobile developer to build and maintain iOS and cross‑platform apps using Native iOS, React Native, and Flutter. You will translate requirements into scalable solutions, implement MVVM/clean architecture, and work with backend teams to ensure robust performance.

The role involves collaborating with QA, UI/UX, and clients, delivering high‑quality code, and contributing to CI/CD processes.

Qualifications

• 3+ years of professional experience in mobile application development.
• Proficient in native iOS (Swift/SwiftUI) or cross‑platform (React Native/Flutter).
• Experience with REST APIs, push notifications, authentication, and local storage.
• Experience deploying to App Store Connect/TestFlight or Google Play Console.

Responsibilities

• Develop, maintain, and enhance mobile apps for iOS and cross‑platform environments.
• Translate requirements into scalable, secure mobile solutions.
• Implement MVVM/clean architecture and effective state management.
• Collaborate with backend, QA, UI/UX, and clients to deliver high‑quality apps.

Skills

Mobile development

Problem solving

Communication

Team collaboration

Education

Bachelor's degree in Computer Science/Engineering

Tools

Swift

SwiftUI

Xcode

React Native

Flutter

Dart

Job description

What is the work?

• Develop, maintain, and enhance mobile applications for iOS and cross-platform environments.
• Work on mobile applications using Native iOS, React Native, and Flutter.
• Understand requirements and translate them into scalable, secure, and user-friendly mobile solutions.
• Develop responsive UI using Swift/SwiftUI, React Native, and Flutter.
• Integrate REST APIs, JSON, GraphQL, Firebase, push notifications, payment SDKs, maps, and third-party SDKs.
• Implement authentication, authorization, deep linking, secure storage, and offline data handling.
• Follow appropriate architecture and design patterns such as MVVM, Clean Architecture, Repository Pattern, and suitable state-management approaches.
• Develop and maintain local storage using technologies such as Core Data/SQLite, Secure Storage, and Firebase/Firestore as applicable.
• Perform unit, UI, widget, and integration testing and troubleshoot crashes, memory, and performance issues.
• Manage iOS and cross-platform builds and releases using Xcode, CocoaPods, Gradle, Android Studio, App Store Connect, TestFlight, and Google Play Console as applicable.
• Use Git/GitHub and participate in code reviews, CI/CD, and release management.
• Work closely with Backend Developers, QA, UI/UX Designers, Project Managers, and clients.
• Provide production support, troubleshoot issues, and ensure application quality and performance.

What skills and experience are we looking for?

• 3+ years of professional experience in mobile application development.
• Strong hands-on experience in at least one of the following:
• Native iOS: Swift, SwiftUI/UIKit, Xcode, iOS SDK, CocoaPods, iOS application lifecycle.
• React Native: React Native, JavaScript/TypeScript, React Hooks, Redux/Redux Toolkit, React Navigation, Native Modules.
• Flutter: Dart, Flutter SDK, Widgets, Bloc/Cubit, Provider/Riverpod, responsive UI, Platform Channels.
• Good understanding of Android/iOS integration for React Native and Flutter applications.
• Strong experience with REST APIs, JSON, Firebase, FCM, push notifications, authentication, deep linking, and third-party integrations.
• Experience with payment SDKs, Google Maps/location services, and local storage.
• Good understanding of MVVM/Clean Architecture and application security.
• Experience with unit testing, UI/integration testing, debugging, Crashlytics, and performance optimization.
• Hands-on experience with Git/GitHub and preferably CI/CD.
• Experience with mobile application deployment through App Store Connect/TestFlight; Google Play Console experience is an advantage.
• Strong problem-solving and troubleshooting skills.
• Good communication and ability to work with technical and non-technical teams.
• Experience working with international clients and distributed teams is an advantage.
• Bachelors degree in Computer Science, IT, Engineering, or related discipline is preferred.