
point on the app. It is an app built in India, for Indians, to share their thoughts and opinions on any topic in their
mother tongue using Audio / Video / Text. Koo gives a stage for Indians to voice their thoughts and enables the “Best
of India” to share their thoughts with the “Rest of India”. Koo provides a personalised feed to users by letting people
select the people they want to follow. The user is then shown content from these people. Some of the top minds of
India are invited on our client to share their thoughts and opinions on various topics. Users can follow such personalities
and follow what they are talking about, and share their opinions too.
Koo boasts of some of the most prominent faces in India that comprise of Union Ministers, Chief Ministers of States,
Actors, Actresses, Celebrities, Sports Personalities, Top Bureaucrats, Journalists and Editors among others from
1000s of professions.
applications with desire to work in growing fast paced startups.
2. Worked on applications from scratch. Well versed with building apps for various screen density and sizes.
3. Up to date on upcoming trends in android and its ecosystem with respect to design, architecture etc.
4. Experience on optimising all important parameters like network utilization, application size and battery.
5. Experience with kotlin, coroutines, dagger, retrofit, rx-android and android architecture components etc.
6. Should have used mock frameworks, modular code design and popular design patterns.
applications with desire to work in growing fast paced startups.
2. Worked on applications from scratch. Well versed with building apps for various screen density and sizes.
3. Up to date on upcoming trends in android and its ecosystem with respect to design, architecture etc.
4. Experience on optimising all important parameters like network utilization, application size and battery.
5. Experience with kotlin, coroutines, dagger, retrofit, rx-android and android architecture components etc.
6. Should have used mock frameworks, modular code design and popular design patterns.

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Position: Senior React Native Developer (4- 7 years)
Location: Remote (Company in Mumbai)
Company: Big Rattle Technologies Private Limited
Immediate Joiners only.
Summary:
We're looking for a seasoned React Native developer who has shipped production-grade mobile apps on both iOS and Android — ideally in the high-traffic, high-stakes world of e-commerce. You'll own the mobile experience end-to-end: architecture, performance, and flawless UX across devices.
Note: We are looking for a senior expert who has delivered multiple apps that are built from scratch and hosted on Apple Store/ Play Store i.e. e2e lifecycle.
KEY RESPONSIBILITIES
- Design and build scalable React Native apps for both iOS and Android from scratch to App Store / Play Store deployment.
- Architect complex e-commerce flows — product catalogues, cart, checkout, payment gateway integration, and order tracking.
- Optimize app performance: reduce TTI, maintain smooth 60fps animations, and manage memory on low-end devices.
- Integrate REST and GraphQL APIs; manage state with Redux Toolkit, Zustand, or React Query.
- Implement push notifications, deep linking, in-app navigation, and offline-first strategies.
- Write clean, well-tested code; maintain CI/CD pipelines using Fastlane, GitHub Actions, or Bitrise.
- Collaborate with designers, backend engineers, and product managers in Agile sprints.
- Conduct code reviews and mentor junior mobile developers.
Required Skills:
Core Mobile
▸ React Native CLI & Expo
▸ TypeScript
▸ React Navigation v6+
▸ iOS (Swift basics) & Android (Kotlin basics) ▸ Xcode & Android Studio
E-commerce & Integrations
▸ Product / Cart / Checkout flows
▸ Razorpay, Stripe, PayPal SDKs
▸ Wishlist, search UX, filters
▸ Order tracking & delivery status
▸ Push notifications & deep linking
State & Data
▸ Redux Toolkit / Zustand
▸ React Query / SWR
▸ REST & GraphQL APIs
▸ AsyncStorage / MMKV
▸ Firebase Realtime DB / Firestore
DevOps & Tooling
▸ Fastlane & GitHub Actions / Bitrise
▸ Jest (unit) & Detox (E2E)
▸ Firebase Crashlytics & Sentry
▸ Flipper / Reactotron
▸ App Store & Play Store deployments
Nice to Have skills: New Architecture · RN Web · AR try-on · RTL support · Shopify SDK · WCAG · Maps SDK
- React Native New Architecture (JSI / Fabric / TurboModules)
- React Native Web or monorepo setups (Nx, Turborepo)
- AR product try-on experiences (ARKit / ARCore)
- Shopify Storefront API or WooCommerce SDK experience
- Accessibility (WCAG mobile) implementation
- Live order-tracking maps (Google Maps / Mapbox)
Required Qualifications:
- Bachelor’s degree in Computer Science, Engineering, or a related technical field.
Why should you join Big Rattle?
Big Rattle Technologies specializes in AI/ ML Products and Solutions as well as Mobile and Web Application Development. Our clients include Fortune 500 companies. Over the past 13 years, we have delivered multiple projects for international and Indian clients from various industries like FMCG, Banking and Finance, Automobiles, Ecommerce, etc. We also specialise in Product Development for our clients.
Big Rattle Technologies Private Limited is ISO 27001:2022 certified and CyberGRX certified.
What We Offer:
- Opportunity to work on diverse projects for Fortune 500 clients.
- Competitive salary and performance-based growth.
- Dynamic, collaborative, and growth-oriented work environment.
- Direct impact on product quality and client satisfaction.
- 5-day hybrid work week.
- Certification reimbursement.
- Healthcare coverage.
Urgently Hiring Android developer either in Android java (android studio) or React native Android app developer or Flutter Android app developer.
Job Location : Indore ( work from Office)
Experience needed : minimum 6 months needed
******
1) Android developer must have expertise in designing as well as development on any technology( either on Android java or React-native or Flutter)
2) Must have expertise in implementing api ( json parsing )
3) Must have done some fully dynamic Android app before.
4) Can work individually or in a team , immediate joiner
*****
Android Services, System service and framework development, Broadcast using Java, Kotlin, C++ (Mandatory)
Experience in AOSP build setup & understanding of Android.bp, gradle, Android.mk (Mandatory)
IPC mechanism in Android: AIDL, JNI, HIDL, Socket Communication (Mandatory)
Experience in Android application development using Java & Kotlin (Mandatory)
Custom UI component development & understanding of MVVM architecture (Mandatory)
Flexible in customizing AOSP for product branding (Good to have)
RESTful service integration, Multithreading ,Message queueing (Good to have)
Responsibilities:
- Collaborate with cross-functional teams to define, design, and ship new features.
- Develop and maintain high-quality Android applications using Kotlin programming language.
- Design, build and maintain high-performance, reusable, and reliable code.
- Ensure the best possible performance, quality, and responsiveness of the application.
- Identify and correct bottlenecks and fix bugs.
- Continuously discover, evaluate, and implement new technologies to maximize development efficiency.
- Work with external data sources and APIs.
- Unit-test code for robustness, including edge cases, usability, and general reliability.
Requirements:
- Bachelor's degree in Computer Science, Software Engineering or related field.
- 2+ years of experience in Android development using Kotlin.
- Strong knowledge of Android SDK, Android UI design principles, and Material Design.
- Experience with RESTful APIs, JSON, and XML.
- Familiarity with cloud message APIs and push notifications.
- Understanding of code versioning tools such as Git.
- Familiarity with continuous integration.
- Good understanding of object-oriented programming, software design patterns and algorithms.
- Strong analytical and problem-solving skills.
- Excellent written and verbal communication skills.
- Ability to work independently and as part of a team.
•Strong in Android, Kotlin, and MVVM architectural pattern
•Great understanding of Coroutines, Memory management, and App performance
•Solid understandings of Connectivity - BLE, WiFi
•Unit and Instrumentation testing knowledge in Espresso, JUnit4 or JUnit5, and Mockito/MockK libraries
•Experience in Dependency Injection - Hilt, Dagger2
•Good knowledge in screen navigation using Navigation APIs
•Good to have knowledge in Jetpack Compose
Design and Build sophisticated and highly salable apps using Flutter.
2. Translate and Build the designs into high quality responsive UI code.
3. Write efficient queries for core Data.
4. Use of Model-View-Controller (MVC) and Model-View-ViewModel-Controller (MVVM) architecture and developing maintainable, testable and functional software that meets product requirements.
5. Resolve any problems existing in the system and suggest and add new features in the complete system.
6. Follow the best practices while developing the app.
7. Use CI/CD for smooth deployment.
8. Document the project and code efficiently.
9. Manage the code and project on Git in order to keep in sync with other team members and managers.
10. Suggest new features and/or enhancements.
11. Maintaining software through product life cycle including design, development, verification and bug fixes.
12. Write tests for the App.
13. Knowledge of different state management libraries like BloC, GetX, Provider will be a plus point.
About Snapbizz
SnapBizz is an exciting start-up working to create a mobile technology platform for FMCG ecosystem. We are series A funded, with Mr. Ratan Tata as one of our investors. We are on a very high growth journey and give phenomenal freedom of decision making and leadership opportunities. Every idea and product that we launch is first of its kind in the industry. We are based in Bangalore.
Website: http://www.snapbizz.com/">http://www.snapbizz.com/
Job Description Android Developer:
We are looking for an Android developer responsible for the development and maintenance of applications aimed at a vast number of diverse Android devices. Your primary focus will be the development of Android applications and their integration with back-end services. You will be working along-side other engineers and developers working on different layers of the infrastructure. Therefore, commitment to collaborative problem solving, sophisticated design, and creating quality products is essential.
Skill Requirements:
- Degree in software development, computer science, or similar
- Ability to use the Android Studio, including the Android SDK, with ease.
- Prior experience as an android developer will be advantageous.
- Excellent coding and proofreading skills.
- Top-notch teamwork and communication skills.
- Ability to manage your workload with minimal supervision.
- Unwavering curiosity.
Android Developer Responsibilities:
- Conceptualizing and formulating apps that are suitable for use on all types of Android devices.
- Implementing measures to safeguard users' data.
- Ensuring that the construction and presentation of your apps are congruent with the company's standards.
- Proofreading your code and correcting mistakes before each app is released.
- Collaborating with UI and UX Designers, as well as Software Testers, to ensure that each app is presentable and in perfect working order.
- Liaising with the marketing department to ensure consistency in our company's 'voice' across the board.
- Monitoring app reviews to detect areas for improvement.
- Designing and building sophisticated and highly scalable apps using Flutter
- Building custom packages in Flutter using the functionalities and APIs already available in native Android and iOS
- Designing highly scalable, testable code
- Discovering and fixing programming bugs
Desired Candidate Profile
What you need to have:- Understanding of good Object Oriented Design principles such as SOLID
- Familiarity with Design Patterns
- Experience with Clean Architecture
- Experience with Dart/Flutter packages and APIs: bloc, flutter_bloc, Streams, rxDart
- Experience in Native Mobile app development Kotlin and Swift
- Experience with building scalable applications using Flutter on android or IOS. (we are happy to meet you even if you do not know flutter but are willing to learn)
- Strong knowledge of Architectural pattern like Bloc, Provider etc in Flutter. Knowledge of writing Plugins in Flutter is a good to have skill
- Ability to think about scalability and reusability while developing flutter widgets.
- Experience in working with Dart.
- Knowledge of unit & integration testing, agile development process, jira & API integration will be extremely useful
- Strong UI building skills and the ability to handle updates in UI with high frequency data changes.
- Experience with version control systems (bitbucket, git etc.)
- Strong knowledge of algorithms and data structures
- Should have demonstrated experience working on application development projects and test-driven development. Experience in writing high quality code
- Strong state management knowledge
- Experience in Fintech domain will be another added advantage









