Mobile App Developer (ios, React)

Synapseindia; Kolkata District; On-site; INR 900,000 - 1,500,000; Full time

Job summary

SynapseIndia is seeking an experienced mobile application developer to build and enhance iOS and cross‑platform apps. The role requires hands-on work with Native iOS (Swift/SwiftUI), React Native, and Flutter, ensuring scalable, secure, and user‑friendly solutions.

You will collaborate with Backend, QA, UI/UX, and clients, integrating REST APIs, Firebase, push notifications, and maps. You’ll follow MVVM or Clean Architecture, contribute to code reviews, and support releases via App Store

Qualifications

• 3+ years of professional mobile app development experience.
• Strong hands-on in Native iOS or cross‑platform stacks (RN/Flutter).
• Experience with REST APIs, Firebase, and push notifications.
• Familiarity with MVVM or Clean Architecture and secure coding.

Responsibilities

• Develop, maintain, and enhance iOS and cross‑platform apps.
• Integrate REST APIs, Firebase, maps, and third‑party SDKs.
• Implement authentication, deep linking, and secure storage.
• Follow architecture patterns and participate in code reviews and CI/CD.

Skills

Swift/SwiftUI

React Native

Flutter

iOS app lifecycle

REST APIs

Firebase

Git/GitHub

CI/CD

MVVM

Cross‑platform development

Education

Bachelor's degree in CS/IT/Engineering

Tools

Xcode

App Store Connect

TestFlight

Google Play Console

Git

Firebase/Firestore

SwiftUI

CocoaPods

Gradle

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.
• Good understanding of Android/iOS integration for React Native 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.