React Native Developer

We are looking for an entry level developer to join our team. You must have delivered at least 2 projects either as a part of self training, internships or industry experience.

Required Skills (more the better):

• Native iOS Application Development with Swift, understanding of Objective C, iOS SDK, Xcode, Cocoa Layer, Media Layer, Core Service Layer, Core OS Layer, iOS Frameworks, iOS Developer Tools, iOS programming, iOS Human Interface
• Hybrid mobile application development using Flutter will be an added advantage
• Deployment/ publish in Apple App Store
• Understanding of design patterns like MVC

Additional Skills:

• Versioning tools such as Git, Bit Bucket, and concepts like branching
• DevOps: Knowledge of operating systems, hosting and deployment on cloud platforms like Amazon Web Services, Google Cloud, Azure etc will be added advantage

Responsibilities will include:

• Developing applications for iPhone and iPad
• Reviewing new releases, SDKs, updates in the mobile space
• Writing clean, well-designed code
• Debugging code and fixing bugs
• Ensuring code quality and security by following industry standards
• Managing code repositories and deploying builds
• Contributing to all phases of the development lifecycle
• Participating in team meetings and client meetings/ calls
• Learning new technologies

Why should I join Big Rattle?

Big Rattle Technologies specializes into development of Mobile and Web applications. Our clients include Fortune 5000 companies. Over the past 9 years, we have delivered multiple projects for clients from various industries like FMCG, Restaurants, Banking and Finance, Automobiles, Ecommerce, Television and Broadcast Agencies.

You will have an opportunity to get end-to-end exposure in software design and development of products, web applications and mobile applications. You will also have opportunities to participate in the decision-making process and take leadership roles as you grow in the organisation.

The company offers benefits like

• Healthcare coverage (including Covid-19 vaccination reimbursement)
• Technical certification fee reimbursements
• Technical training fee reimbursements
• 5-day work week
• Flexible working hours
• Hybrid working

Responsibilities

1. Cross-Platform Mobile Development

• Build, maintain, and scale production-grade React Native applications for both Android and iOS platforms from a single codebase.
• Translate product requirements and UX designs into clean, modular, and reusable React Native components.
• Develop rich, intuitive user interfaces for AI/ML dashboards, real-time analytics, and consumer-facing applications.
• Own features end-to-end — from technical design through to deployment on Play Store and App Store.

2. Native Integration & Bridging

• Write custom native modules and bridges in Kotlin/Java (Android) or Swift/Objective-C (iOS) to extend React Native's capabilities where required.
• Integrate third-party SDKs, device hardware APIs, and platform-specific features seamlessly into the React Native layer.
• Ensure consistent functionality and behaviour across a wide range of Android and iOS devices and OS versions.

3. Real-Time & Data-Driven UI

• Build real-time UI components that handle live data streams, WebSocket connections, and high-frequency data updates with minimal latency.
• Develop data-intensive views including charts, dashboards, and monitoring interfaces optimised for mobile performance.
• Ensure smooth, responsive user experiences under high-traffic and data-heavy conditions.

4. Performance & Optimization

• Profile, debug, and optimize application performance using tools such as Flipper, Hermes, React DevTools, and platform-native profilers.
• Minimize app bundle size, reduce render cycles, and improve startup time through best-in-class optimization techniques.
• Ensure accessibility compliance and cross-device UI consistency across varying screen sizes and resolutions.

5. Architecture & Code Quality

• Design and implement scalable mobile architectures supporting modularity, testability, and long-term maintainability.
• Implement robust state management using Redux, Zustand, MobX, or React Context depending on application complexity.
• Establish and uphold mobile coding standards, component libraries, and reusable design systems across the team.

6. Collaboration & Delivery

• Partner closely with backend, AI/ML, data engineering, and design teams to integrate APIs, data pipelines, and workflows.
• Actively participate in code reviews, sprint ceremonies, and technical design discussions.
• Support CI/CD pipelines using Fastlane, Bitrise, or equivalent tools for automated builds and releases.
• Contribute to OTA update strategies using CodePush or equivalent.

Required Skills & Qualifications

• Strong hands-on experience building and shipping production React Native applications on both Android and iOS.
• Proficiency in JavaScript and TypeScript — TypeScript strongly preferred.
• Experience with state management libraries — Redux, Zustand, MobX, or Context API.
• Solid understanding of React Native architecture — Bridge, JSI, Hermes engine, and the New Architecture (Fabric/TurboModules) is a plus.
• Experience writing native modules or bridges in either Kotlin/Java or Swift/Objective-C.
• Hands-on experience with REST APIs, GraphQL, and WebSockets in a mobile context.
• Strong understanding of mobile UI/UX principles, responsive design, and platform-specific design guidelines (Material Design & HIG).
• Experience with CI/CD pipelines and app store deployment processes.

Preferred Skills

• Experience building data-intensive or dashboard-heavy mobile applications.
• Familiarity with data visualization libraries such as Victory Native, Recharts, or D3.js for mobile.
• Exposure to AR/VR or graphics-intensive mobile experiences (ARKit, ARCore, React Native Vision Camera).
• Experience with OTA updates via CodePush or similar tools.
• Familiarity with monorepo setups (Nx, Turborepo) for managing shared mobile codebases.
• Understanding of accessibility standards (WCAG) and inclusive design on mobile.
• Exposure to AI/ML integration on mobile — on-device inference, TensorFlow Lite, or CoreML.

Designation: Sr. Software Engineer – React Native

Work Location: Chennai/Bangalore

Experience: 

• 4 - 8 years of experience in development with minimum 2 years in react native.

Description:

• Should have min 2+ years of Hands-on experience in React Native development.
• Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux
• Experience with JavaScript, Typescript, CSS, HTML5 and front-end languages.
• Good understanding of Android/ iOS design guidelines, SDK.
• Exposure to building React Native components in native iOS and Android.
• Solve complex technical, scalability or performance challenges.
• Familiarity with code versioning tools such as Git, SVN, Gitlab.

Educational Requirements:

B.E/B.Tech (CS/IT/ECE), MSc (CS), MCA

Requirements:

• Design and develop scalable IONIC applications using open source technologies.
• Develop a hybrid application with IONIC, cordova.
• Experience in HTML5 CSS, JQuery and Javascript.
• Experience in hosting application on Appstore.
• Work as part of an agile team on leading edge technologies.
• PHP & Apache stack with JavaScript, JQuery.
• Responsive Web design with HTML5 CSS3 Bootstrap.
• Social media APIs and third party widgets integration.
• Web services Integration - JavaScript and XML (Ajax), Representational state transfer (REST), Javascript Object Notation (JSON).
• End to End Role - Analyze Design, Develop, Deploy, Monitor, Enhance
• Experience on database systems.

We are looking for an Android Developer who possesses a passion for pushing mobile technologies to the limits. This Android app developer will work with our team of talented engineers to design and build the next generation of our mobile applications. Android programming works closely with other app development and technical teams.

• Design and build advanced applications 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
• Work on bug fixing and improving application performance
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency

• BE/MS degree in Computer Science, Engineering or a related subject 
• Proven software development experience and Android skills development
• Proven working experience in Android app development and have published at least 5 original Android apps
• Experience with integrating various Android SDKs
• Knowledge of developing own Android SDKs for distribution to other developers
• Experience working with remote data via REST and JSON
• Experience with third-party libraries and APIs
• Working knowledge of the general mobile landscape, architectures, trends, and emerging technologies

• Know how to build android applications and integrate APIs/SDKs
• Know how to create android SDKs
• Have built and launched atleast 5 android apps
• Ability to build complex apps on Android

Key responsibilities: 

• 1-2 years experience in React-Native based app development
• 1-3 years experience in Mobile app development (React-Native + iOS)
• Hands on experience in Redux
• Knows how to embed React-Native in a native (iOS/Android) component and vice versa
• Strong hold on JS/ CSS fundamentals
• Development experience of UI (layouts, animations, etc.) 
• Experience of customizing libraries
• Good understanding of Design and Architecture Patterns 
• Strong focus on app performance

Must have:

• Experience in iOS development
• Willingness to learn and work in React Native 

Good to have:

• Experience in unit testing 

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We are looking for an experienced React Native developer interested in building performant mobile apps on both the iOS and Android platforms. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

• Minimum 3 years of experience in a high-quality engineering team at a product startup or MNC
• Bachelor’s degree in computer science, computer engineering or related technical field from a top-tier college
• Proficiency in CS concepts such as data structures and algorithms
• Experience in implementing readable, object oriented code and design patterns
• Understanding of build, deployment, A/B testing of products
• Familiarity with native build tools, like XCode, Gradle, Android Studio, IntelliJ
• Understanding of REST APIs, the document request model, and offline storage
• 1+ years of experience working as a React Native Mobile Developer