Mobile App Developer

Job Description:

We are looking for a skilled React Native Developer to design, develop, and maintain high-performance cross-platform mobile applications for Android and iOS.

The ideal candidate must have strong command over React Native, TypeScript/JavaScript, and working knowledge of Kotlin (Android) and Swift (iOS) to build and integrate native modules when needed.

You will work closely with backend, design, and product teams to deliver seamless, fast, and stable mobile experiences for the ZestFindz ecosystem.

Key Responsibilities:

• Develop and maintain cross-platform mobile applications using React Native.
• Collaborate with design and product teams to deliver pixel-perfect, responsive UIs.
• Integrate REST APIs / GraphQL and handle authentication, caching, and error states efficiently.
• Implement and manage app state using Redux / Context API / Zustand.
• Optimize app performance, handle animations, memory leaks, and rendering issues.
• Build and integrate native Android (Kotlin) and iOS (Swift) modules where React Native limitations exist.
• Manage offline storage using SQLite / AsyncStorage / MMKV.
• Configure and manage Firebase services - Auth, Firestore, Push Notifications, Analytics.
• Handle deep linking, in-app navigation, and app lifecycle events.
• Deploy apps to Google Play Store and Apple App Store (with signing, provisioning, versioning).
• Work with DevOps to integrate apps into CI/CD pipelines (Fastlane / GitHub Actions / Codemagic).
• Write clean, modular, reusable code with proper documentation and testing.
• Debug, profile, and optimize performance for low-end devices and weak networks.
• Ensure security best practices - secure token storage, environment management, and data encryption.

Must-Have Skills:

• Strong experience in React Native (0.70+) and JavaScript / TypeScript.
• Solid understanding of mobile architecture patterns (MVC, MVVM, Flux).
• Knowledge of Kotlin (Android) and Swift (iOS) for native bridge creation and debugging.
• Experience with React Navigation, Redux / Context API / Zustand, and API integration (Axios / Fetch).
• Familiarity with Firebase, App Permissions, and Push Notifications (FCM/APNS).
• Good understanding of Android Studio, Xcode, Gradle, and Cocoapods.
• Ability to write clean, testable code with unit and integration tests.
• Working experience with Git / GitHub / GitLab CI/CD.
• Problem-solving mindset and ability to debug across full mobile stack.

Good-to-Have Skills (Bonus):

• Knowledge of native SDK integrations (Maps, Camera, Payments, etc.).
• Experience with React Query / GraphQL.
• Familiarity with Fastlane, Crashlytics, App Center, or Sentry.
• Understanding of UX principles and animation libraries (Lottie, Reanimated).
• Experience with OTA updates (CodePush) and App Store Optimization (ASO).

Flutter JD:

Key Responsibilities: Collaborate with project managers and designers to understand project requirements and translate them into technical specifications.

Develop, test, and maintain Flutter-based mobile applications that are responsive, performant, and reliable.

Write clean, maintainable, and well-documented code.

Troubleshoot and debug application issues, ensuring smooth and efficient performance.

Continuously research and stay up-to-date with the latest trends and best practices in mobile application development.

Collaborate with cross-functional teams to define and implement new features and improvements.

Participate in code reviews and provide constructive feedback to peers.

Ensure the security and data privacy of the applications you develop.

Requirements:

Proven experience as a mobile app developer, with a strong portfolio of Flutter-based applications.

Proficiency in the Dart programming language.

Experience with the Flutter framework and its ecosystem, including state management and third-party libraries.

Knowledge of mobile app architecture patterns (e.g., MVC, MVVM, Redux).

Familiarity with RESTful APIs and integration of third-party services.

Strong problem-solving and debugging skills.

Excellent communication and collaboration skills.

Ability to work both independently and as part of a team.

Knowledge of version control systems (e.g., Git) is a plus.

-The role which we are hiring is of Individual Contributor.

-Framework and principles of React Native

-Architecture patterns

-Redux

-IOS & Android

-Redux Saga.

-TypeScript/JavaScript

-Class/Functional Components

-Hooks

-NFRs(Accessibility, Unit test cases)

-Component Lifecycle events

-Knowledge of Flat list, Flexbox, UI creation

-High Order Components

-Security and Performance aspects

-Native bridging

-Code Push

-App Distribution and deployment

-SSL Pinning

-Navigation concepts

-Networking

• 4+ years of mobile software development (iOS & Android).
• Bachelor’s Degree in Computer Science, Engineering, or related field.
• Deep understanding and proficiency in building mobile apps from scratch using at least one mobile language (Swift, Java, Objective-C, etc.). Experience with multiple platforms is preferred.
• Desire and ability to expand expertise into additional mobile languages.
• Expertise in designing testable software and building large scale, complex applications.
• Self-motivated with strong problem-solving skills.
• Passionate about writing clean, well organized, and production-ready code.
• A portfolio of Apps or SDKs already built and in the App Store and Google Play.
• Desire to build a larger in-house team and manage a group of developers over time.
• Some management experience preferred.

We’re looking for a Senior Android developer who will take a key role in our team. You will be working alongside other engineers and developers, collaborating on the various layers of the infrastructure.

Responsibilities:

• Design and build advanced application features for the Android platform.
• Collaborate with cross-functional teams to define, design, and ship new features.
• Work with outside data sources and APIs.
• Unit-test code for robustness, including edge cases, usability, and general reliability.
• Resolving/ fixing bugs and improving application performance.
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency.

Requirements:

• Proven software development experience and Android skills development.
• Proven working experience in Android app development and Kotlin.
• Have published at least one original Android app.
• Experience with Android SDK.
• Experiece with Flutter Development
• Experience working with remote data via REST and JSON.
• Experience with third-party libraries and APIs.
• Working knowledge of the general mobile landscape, architecture, threading, offline data storage, trends, and emerging technologies.
• Solid understanding of the full mobile development life cycle.