Android Developer

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.

#Android_Developer (#Kotlin)

#Location: Noida, Sector 63

#Experience: 1–3 Years

#Immediate_Joiner

#Key_Responsibilities:

Develop Android apps using Kotlin and Jetpack libraries

Implement MVVM architecture with Navigation and Lifecycle-aware components

Work with REST APIs using Retrofit, Coroutines, and LiveData

Optimize performance and ensure compatibility across Android devices

Collaborate closely with UI/UX designers for smooth, intuitive interfaces

hashtag

#Required_Skills:

Strong hands-on experience in 

#Kotlin,

#Android_Studio, 

#Jetpack

Proficiency with Room DB, ViewModel, Navigation Components

Familiarity with Gradle, Unit Testing, and Dependency Injection (Hilt/Dagger)

Bonus: Experience with Play Store deployment and CI/CD integration

What you need to have:

We are looking for:

Someone who is passionate about beautifully designed app experiences

Fascinated by all aspects of application development, from brainstorming

and

design to implementation and release.

Team player who can write clean and maintainable code.

Someone with strong foundation in data structures & algorithms, OS,

I/O,

concurrency.

Someone with excellent knowledge of Java Technology Stack, Mobile

Development, and Android eco-system.

Someone with good understanding of mobile app UI/UX and Material Design.

3+ years of software development experience in Android.

Someone with excellent debugging and optimization skills.

Roles and Responsibilities

To build cross-platform mobile apps for Android, IOS, and Web. This should include making responsive UIs to efficiently query data and also manage states in an optimized manner.

Desired Candidate Profile

- Deep experience contributing to and managing high-scale production mobile apps. You must have previous experience in Flutter development.

Responsibilities and Duties :

• 2-5 years working as a full-time professional developer (Mobile) and 2 Years in a flutter is must
• Experience building a complex mobile applications, flutter would be advantage
• Good to have if it's on the Play Store/App Store or any other demo
• Willing to work with cross-platform frameworks
• Willing to learn and work on different mobile platforms frameworks when needed.
• Familiar with REST Api's, websockets in mobile integration.
• Working with a version control system (i.e., Git)
• Good communication skills.

• Strong problem-solving skills.
• Team worker.
• Very comfortable learning new technologies, tools, and platforms.
• Highly motivated.
• Initiative and passionate.
• Strong problem-solving skills.