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.

Job Responsibilities:

• Assist in the design, development, and maintenance of high-quality Android applications using Java/Kotlin.
• Work with Android Studio to write clean, efficient, and well-documented code.
• Implement and adhere to MVVM (Model-View-ViewModel) architectural patterns to ensure scalable and maintainable applications.
• Utilize Data Binding to streamline UI development and improve code readability.
• Develop user interfaces with a strong understanding of various Layouts (ConstraintLayout, LinearLayout, RelativeLayout, etc.) and responsive design principles.
• Integrate applications with RESTful Webservices using libraries like Retrofit to connect with backend services and handle data efficiently.
• Gain experience in interacting with databases, including basic operations with SQLite Database (Creating, Updating/Querying) for local data storage and understanding of server-side data interaction.
• Apply Debugging Skills using tools such as Logcat, Android Debugger (Debug), and Lint for identifying and resolving issues, and optimizing application performance.
• Leverage Plugin Tools like ADB Idea, Codata, and Lombok Plugin (if applicable) to enhance development workflow and productivity.
• Work with various Android APIs to implement new features and functionality.
• Participate in Testing the Android Application, including unit testing and collaborating with QA for functional and integration testing.
• Perform Lint for Code Inspection to ensure code quality, consistency, and adherence to best practices.
• Learn and apply fundamental Design Patterns (e.g., Singleton, Observer) in Android development.
• Collaborate effectively with cross-functional teams, including product managers, UI/UX designers, and backend developers, to define, design, and ship new features.
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency and improve application performance.
• Stay up-to-date with the latest Android development trends and best practices.

Required Skills and Qualifications:

• Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent practical experience).
• 0-2 years of hands-on experience in Android application development.
• Solid understanding of Android SDK and Android Studio.
• Proficiency in at least one of the primary Android programming languages: Java or Kotlin.
• Familiarity with MVVM architecture.
• Basic knowledge of Data Binding.
• Understanding of various Android Layouts.
• Exposure to SQLite Database and concepts of server-side interaction.
• Familiarity with Retrofit for API consumption.
• Demonstrated Debugging Skills using relevant Android tools.
• Awareness of common Plugin Tools for Android development.
• Basic understanding of Android APIs.
• Knowledge of RESTful Webservices principles.
• Experience with testing methodologies for Android applications.
• Ability to use Lint for Code Inspection.
• Eagerness to learn and apply Design Patterns.
• Strong problem-solving abilities and attention to detail.
• Excellent communication and teamwork skills.
• A portfolio of personal or academic Android projects is a strong plus.

Android Developer (Kotlin & Jetpack Compose)

Location: Indore / Chennai

Experience: 4 – 7 Years

Joining: Immediate Joiners Preferred

Good English communication skills

🔹 Key Responsibilities:

• Develop and maintain Android applications using Kotlin & Jetpack Compose
• Collaborate with cross-functional teams to define, design, and ship new features
• Ensure the performance, quality, and responsiveness of applications
• Integrate REST APIs and third-party services

🔹 Required Skills:

• Strong experience in Kotlin and Jetpack Compose
• Good understanding of Android SDK & Android Architecture Components
• Knowledge of MVVM / Clean Architecture
• Experience with REST APIs & JSON integration

• 5+ years of proven experience in Android application development.
• Deep understanding of the Android framework.
• A strong background implementing MVVM architecture in Android applications.
• Familiarity with third-party libraries such as RxJava, Dagger and Retrofit.
• Experience with Jetpack Compose a plus.
• Experience consuming RESTful APIs with Android applications.
• Comfortable working in a team environment following the Agile methodology.
• Understands Android UX and works closely with the design team to ensure UI designs are aligned with the current Android UI guidelines.
• Proficient in writing Kotlin code for all new development, with experience in working in Java.

About Us

We offer AI-powered biomechanics analysis to optimize peak athletic performance.. We enhance player development through accessible data and cutting-edge technology, providing clear insights for athletes and their coaches. Our vision is to create a future where AI serves as a powerful tool for athletes of all levels. By providing data-driven insights into biomechanics and facilitating the development of strong technical skills, we aim to unlock potential, reduce injury risk and revolutionize sports training 

Job Description:

We are looking for an experienced Flutter Developer to design and develop a high-quality mobile application. The ideal candidate shall have a minimum of 2 years experience in mobile development, proficiency in Flutter, with good knowledge in C++, and desirably understands Computer Vision (CV).

Responsibilities:

- Design, build, and maintain efficient, reusable, and reliable Flutter code.

- Ensure the best possible performance, quality, and responsiveness of applications.

- Collaborate with cross-functional teams to define, design, and ship new features.

- Identify and correct bottlenecks and fix bugs.

- Help maintain code quality, organization, and automation.

- Stay up-to-date with the latest industry trends and technologies.

Requirements:

- Bachelor’s degree in Computer Science, Engineering, or a related field.

- 2-3 years of professional experience in mobile app development.

- Proficiency in Flutter and Dart.

- Strong knowledge of C++ or Java.

- Exposure to Computer Vision (CV) technologies and frameworks.

- Familiarity with RESTful APIs to connect mobile applications to back-end services.

- Solid understanding of the full mobile development life cycle.

- Experience with version control systems, such as Git.

- Strong problem-solving skills and attention to detail.

- Excellent communication and teamwork skills.

Preferred Skills:

- Experience with Agile/Scrum development methodologies.

- Knowledge of other mobile development frameworks and technologies.

- Familiarity with cloud services and integration (e.g., AWS, Firebase).

- Experience with CI/CD pipelines.

What We Offer:

- Competitive salary and benefits package.

- Opportunity to work on cutting-edge technologies.

- Collaborative and innovative work environment.

- Professional growth and development opportunities.

Joining: Immediate

Designation: Android Developer

No of Vacancy: 1

Job Brief: 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.

Roles and Responsibility:

• Designing and developing advanced applications for the Android platform
• Unit-testing code for robustness, including edge cases, usability, and general

reliability

• Bug fixing and improving application performance
• 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

Requirements:

• Knowledge of Objective C, Swift, React Native can be considered as add on.
• BS/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● Have published at least one original Android app
• Strong knowledge of Android SDK, different versions of Android, and how to deal

with different screen sizes Familiarity with RESTful / JSON APIs to connect Android

applications to back- end services

• Strong knowledge of Android UI design principles, patterns, and best practices

Experience with offline storage, threading, and performance tuning

• Ability to design applications around natural user interfaces, such as touch

Knowledge of the open-source Android ecosystem and the libraries available for

common tasks

• Ability to understand business requirements and translate them into technical

requirements Familiarity with cloud message

• PIs and push notifications Understanding of Google's Android design principles and

interface guidelines Proficient understanding of code versioning tools, such as SVN /

GIT Familiarity with continuous integration

• Experience with Android SDK
• 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

• Solid understanding of the full mobile development life cycle.

Key Skills: Android SDK, SOA, XML, MySQL, JSON, Android, SQLite, Git, Objective C,

Swift, GIT 

Mandatory: Hands on experience working with Java or Kotlin. Very strong logical skills. Good hold on operating system concepts and data structure. Experience with web services , SQL Lite , camera kit , image caching concepts, keychain , past experience working with one of the design patterns like MVC / MVVM / MVP , network check implementation.

Good to have:  Rx-Swift experience , video / image filter experience , media player usage , complex UX effects , couch-db , RealM.Knowledge of GIT management , Continuous Integration and Continuous Development practices.

Soft Skills: Strong communication skills , high spirited , eager to learn , able to perform in a high pressure environment