Mobile Application Developer | Chennai

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) or 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.
• Optimize app performance, handle animations, memory leaks, and rendering issues.
• 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 TypeScript.
• Experience with React Navigation, Redux and API integration (Axios / Fetch).
• Familiarity with Firebase, App Permissions, and Push Notifications (FCM/APNS).
• 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).

• You have a minimum of 6 years of experience building high-performance consumer-facing mobile applications at Product companies of a decent scale.
• You have founded/worked in a start-up and have worked in an enterprise environment
• You have a keen eye for mobile architecture and have led/participated in architectural discussions.
• You have a passion for mentoring and helping people on your team grow and achieve their goals and work with cross teams.
• You practice test-driven development and you are able to drive agile practices.
• You have worked with multiple languages/frameworks and have expertise in any one programming language/framework/stack.
• You have published reusable packages.
• You have worked with building automation, devise farms, multi-target testing.
• You are able to optimize the application for performance and speed.
• You are an excellent collaborator & communicator. You know that start-ups are a team sport. You listen to others, aren’t afraid to speak your mind and always try to ask the right questions.
• You are excited by the prospect of working in a distributed team and company. 

• Architect, build & maintain beautiful, world-class, enterprise-grade mobile apps
• Build for multiple platforms (iOS, Android) using a single code base (ReactNative, Expo
  and CSS)
•  Collaborate with cross-functional teams to design, develop & ship new features
• Build and maintain tools and infrastructure to support the rapid development and testing of mobile apps

• Passionate about developing mobile apps for iOS and Android using JavaScript
• A mindset to do what it takes to not just get the job done but go above and beyond
• Quick learning mindset and a humble attitude
• Strong fundamentals in JavaScript, ES6, React, and CSS
• Good understanding and working knowledge of using REST APIs and handling errors
• Knowledge of functional programming.Understanding of how to build performant, decoupled, testable, maintainable code.
• Experience in writing native code for android and iOS to write bridges whenever required.
• Bonus: Entrepreneurial spirit and the mindset of challenging the status quo is a big plus
• Bonus: Experience with modern testing frameworks (e.g., Jest, react-testing-library).

React Native Developers

• l React Native
• l Redux and State Management
• l Experience with OIDC/OAUTH2
• l Git and Git Flow Processes
• l JavaScript (ES6 and ES.next)
• l Unit Testing (Jest, Jasmine or similar frameworks)
• l Server Side Programming (NodeJS, Express)
• l OpenAPI Spec

We are looking to hire a React Native Mobile App Developer for a Singapore based Fintech startup. A joint venture of Singapore Stock Exchange and Temasek an investment company has recently acquired a minority stake in the company. Candidates must have a strong understanding of end-to-end flows encompassing front-end, application server, APIs and databases. The candidates must possess strong programming skills.

Requirements:

• Has demonstrable experience in building mobile apps for iOS and Android using React Native.
• The candidate must have at least 2 years of relevant experience in mobile app development.
• Detail-orientation and appreciation of usability, design and aesthetic elements is a must.
• Overall experience of 3-8 years, with relevant educational background or certifications.  

• Experience in React Native, Redux, CodePlus

• Need to have design/UI component knowledge on both Android/iOS platform.

• Capable of deploying the mobile app on both Android / iOS platform.

• Excellent knowledge in the integration of the NPM module within the environment.

• Good knowledge of data structure and algorithms

• Need to have experience in working with RestFul API service.

• Must have experience on version control SVN /GIT