Android Developer

Job Summary

We are looking for a highly skilled Senior Flutter Developer with 5–7 years of software development experience, including 3+ years of hands-on Flutter development, to build high-performance, scalable, and visually appealing cross-platform mobile applications. The ideal candidate should have strong expertise in Flutter, Dart, mobile architecture, API integration, state management, and application performance optimization.

Key Responsibilities

• Design, develop, test, and maintain cross-platform mobile applications using Flutter and Dart.
• Build reusable, scalable, and maintainable code following clean architecture principles.
• Collaborate with Product Managers, UI/UX Designers, QA Engineers, and Backend Developers to deliver high-quality applications.
• Integrate RESTful APIs and third-party SDKs.
• Implement responsive UI components with pixel-perfect designs.
• Optimize application performance, memory usage, and startup time.
• Write unit tests, widget tests, and integration tests.
• Troubleshoot and resolve application bugs and production issues.
• Participate in code reviews and mentor junior Flutter developers.
• Ensure application security and follow mobile development best practices.
• Publish and maintain applications on Google Play Store and Apple App Store.
• Stay updated with the latest Flutter releases and mobile development trends.

Required Skills

Must-Have Skills

• 5–7 years of software development experience.
• Minimum 3+ years of hands-on experience with Flutter.
• Strong programming experience in Dart.
• Experience developing applications for both Android and iOS.
• Strong understanding of Flutter widgets, animations, navigation, and custom UI development.
• Experience with State Management:
• Provider
• Riverpod
• Bloc/Cubit
• GetX (any one or more)
• Experience integrating REST APIs and JSON parsing.
• Knowledge of Firebase services:
• Authentication
• Firestore
• Cloud Messaging (FCM)
• Crashlytics
• Analytics
• Experience with local databases such as SQLite or Hive.
• Strong understanding of asynchronous programming (Future, Streams).
• Experience with Git and version control.
• Knowledge of mobile application architecture (MVVM, Clean Architecture).
• Strong debugging and performance optimization skills.

Preferred Skills

• Experience with CI/CD pipelines.
• Knowledge of Fastlane, Codemagic, GitHub Actions, or Bitrise.
• Experience with Push Notifications.
• Experience working with WebSockets.
• Familiarity with GraphQL.
• Experience with native Android (Kotlin/Java) or iOS (Swift) is an advantage.
• Experience with Agile/Scrum development methodologies.

Qualifications

• Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field.
• Equivalent practical experience is also considered.

Good to Have

• Experience publishing apps to Google Play Store and Apple App Store.
• Experience with payment gateway integration.
• Experience with Google Maps and location services.
• Knowledge of app security and data encryption.
• Exposure to AI-powered mobile features is an added advantage.

Soft Skills

• Excellent problem-solving and analytical skills.
• Strong communication and collaboration abilities.
• Ability to work independently in a fast-paced environment.
• Ownership mindset and attention to detail.
• Mentoring and leadership capabilities. 

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.

• Excellent mobile app development experience
• Strong CS fundamentals OOPS concepts, algorithms data structures Core Java
• Deep knowledge of basic React Native components and Android Studio
• Ability to write well-documented, clean Java and Javascript code
• In-Depth knowledge of building tools like XCode, and Android Studio
• Knowledge of Android Studio and React Native Lifecycle and publishing cycles on Google and Apple app stores.
• Experience with Git and ES6
• Experience in the kotlin  and flutter  

🏆 Benefits

• Remote Possible - Work from anywhere in India though we promote Work From Office like revered Narayan Murthy is appealing. https://trak.in/tags/business/2022/03/14/infosys-founder-narayan-murthy-wants-all-employees-back-to-office-says-work-from-home-is-bad-for-productivity/">Read it
• Flexible work hours
• Annual Appraisal Cycles
• Healthcare plans are on the way
• Free e-learning courses and external training plus certifications
• Fewer deductions so In Hand, Salary is more
• Special Guidance on Financial Investment planning to help you save more
• Healthcare sessions with our Doctors
• We promote employees to take timely leaves and take care of family

Job Title:

 Senior software Development Engineer

Department:

 Android - Technology

Based at:

 Bangalore

Reports to:

Engineering Manager

Experience:

 4 years to 7 years

Required Qualification:

 B.tech from Top tier college

Company Overview:

At Porter, we are passionate about improving productivity. We want to help businesses, large and small, optimize their last-mile operations and empower them to unleash the growth of their core functions. Last mile delivery logistics is one of the biggest and fastest growing sectors of the economy with a market cap upwards of 50 billion USD and a growth rate exceeding 15% CAGR.

Porter is the fastest growing leader in this sector with operations in major cities, a fleet size exceeding 1L registered and 50k active driver partners and a customer base with 3.5M being monthly active. Our industry-best technology platform has raised over 150 million USD from investors including Sequoia Capital, Kae Capital, Mahindra group, LGT Aspada, Tiger Global and Vitruvian Partners.

We are addressing a massive problem and going after a huge market. We’re trying to create a household name in transportation and our ambition is to disrupt all facets of supply chain. At Porter, we’re here to do the best work of our lives.

If you want to do the same and love the challenges and opportunities of a fast paced work environment, then we believe Porter is the right place for you.

Company URL: https://porter.in/

Porter has multiple mobile apps used by our consumers - app used by our customers to place on-demand orders, app used by our drivers to service those orders, and app used by fleet owners to manage their vehicles on our platform. Each of these apps is frequently iterated over to improve functionality and experience. In such a fast paced environment, we expect our mobile developers to develop and maintain these complex apps with a heavy focus on code design to keep the code easily extensible and maintainable.

Responsibilities:

● Participate in the product life cycle to understand directly from the Product Team the expected behavior of the apps and the use cases being implemented.

● Participate in design discussions with heavy focus on modeling entities and interactions, following architectural patterns like MVP, MVVM, Clean Architecture, etc.

● Collaborate with cross-functional teams - backend teams for finalizing APIs, design team for UI / UX, QA team for testing, etc.

● Participate in iteration planning to give effort estimates.

● Write clean, readable, maintainable and performant code following well established design principles.

● Write Unit Tests and Integration Tests to ensure correctness.

● Track, debug and fix bugs & crashes escalated.

● Ensure the apps are performant - no memory leaks, no frame drops, battery usage, etc.

● Explore and evaluate new technologies, tools and SDKs as may be necessary to improve the entire development pipeline.

● Work with cross-platform technologies, like Kotlin Multiplatform, to ensure consistency of features and code reuse across Android / iOS platforms.

Technologies:

● Languages: Kotlin, Java, SQL

● Frameworks: RIBs, Kotlin Multiplatform, Spek

● Architectures: MVVM, MVP, Clean Architecture, etc

● Libraries: Kotlin Coroutines, RxJava, Dagger2, Ktor, Jetpack, etc

● Integrations: AWS services, Payment Gateways (Razorpay, etc), Google Maps, Firebase, etc

Products & Systems Overview

You will be contributing to products concerning both customers and partner drivers.

● Customer App:

■     All orders serviced by Porter are placed from this app making it our primary business driver.

■     To keep the code for this large complex app maintainable, there is a heavy emphasis on good design and architecture. Currently the RIBs framework is used to break the code recursively into smaller components.

■     To ensure feature parity and consistency across our Android and iOS platforms, we use Kotlin Multiplatform to re-use business logic code across the two platforms.

● Partner App:

■     All orders serviced by Porter are fulfilled by drivers using this app.

■     Given that the app is expected to run for long hours on cheaper phones there is a heavy emphasis on keeping the apps performant - optimizing battery consumption and memory usage.

■     The app serves as a medium for onboarding - providing functionality for partners to upload and verify their documents using Image Processing.

■     To train the drivers for every new feature launched, we provide a guided audio-visual training session - using visual cues like hint to click / swipe with synchronized pre-configured audio to guide him through the sequence of steps.

● Fleet Owner Apps:

■     A multi-platform app for fleet owners to manage their drivers and track their performance and earnings on our platform.

Qualification Prerequisites

● Experience: >= 4 years in Android development

● Proficiency with Android framework and Kotlin.

● Experience in designing, writing and maintaining a large complex app code base.

● Experience with design patterns like MVP, MVVM, Clean Architecture, etc.

● Experience with reactive & asynchronous programming using RxJava / Coroutines / Flows

We are looking for an experienced Android developer for the development and maintenance of an Android app aimed at drone pilots to execute drone flights. The application will have to be intuitive, robust and work offline.

You will be working along-side other mobile and web developers to develop a full-stack drone flight solution that enables drone service providers, pilots, and enterprises to execute fast, accurate, and seamless drone missions. You will work with cross functional product development team and will be responsible to design and build drone applications.

Qualification:

• Tech/M.tech/BCA/MCA Degree in computer Science/IT/Electronics.

Duties & Responsibilities:

• Design, build and maintain efficient, reusable, and reliable android code.

• Collaborate with cross-functional teams to define, design, and ship new features
• Work on bug fixing and improving application performance
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency

Skills:

• Hands-on experience in developing Android apps

• Experience with offline storage, threading and performing benchmarking and tuning.
• Well versed with the latest android jetpack libraries (AndroidX, ViewModels etc)
• Understanding of Android design principles and interface guidelines
• Strong knowledge of Android SDK, different versions of Android, and how to deal with different screen sizes.
• Proficient understanding of code versioning tools like Git
• Work with outside data sources and APIs (Familiar with frameworks like Retrofit, Volley, OkHTTP, etc.)
• Familiarity with cloud message APIs and push notifications.
• Good knowledge in programming concepts OOPs, design & coding patterns
• Experience in writing & executing UI Unit Tests for robustness, usability, and reliability.
• Experience with Google Play console and publishing apps on the play store

Soft Skills:

• Understanding of database structure, algorithms, and processes
• Familiar with database management and design
• Good communication and management skills
• Ability to adapt to new technology, concept, approaches, and environment faster
• Problem-solving and analytical skills
• Must have a learning attitude and improvement mindset
• Knowledge of non-functional aspects of the app/product such as security, automation, testing, performance, optimization
• Leadership and resource management skills

Role- Android Developer

About Growth Product – HatchXR – a Metaverse platform for Schools and Kids

HatchXR is Camp K12’s very own AR/VR/3D and Metaverse coding platform for kids. Over 20,000 teachers and 1.5M students use the platform today across 150 countries, to learn to code and to become the youngest AR/VR and Metaverse creators anywhere in the world.

Our partners include the Government of Delhi, Code.org, and 1000+ schools across the globe, growing week on week. The platform, and our partnerships, are US-first and global. 75% of our users come from North America, another 10% from UK and Australia, and the rest from India and other geos.

CNBC episode showing how Hatch is being used to teach coding in Indian government schools:

https://www.youtube.com/watch?v=mAdZar2BcVo">https://www.youtube.com/watch?v=mAdZar2BcVo

Catering to a wide range of users from students to professionals, anyone who is interested in learning programming and/or 3D game designing, or just wants to build their games, or learn a new skill set, can find a use for Hatch. 

https://hatchxr.com/">HatchXR is our text-based coding platform that can be used by anyone to learn about JavaScript and, build and share 3D / AR / VR games using that knowledge 

https://kids.hatchxr.com/">Hatch Kids is our block-based coding platform that can be used to teach fundamentals of programming to young students all the while building their own VR experiences. 

https://code.hatchxr.com/">Code.Hatch is our self-learning platform that can be used by younger students to learn about the basics of programming by themselves, at their own pace without the need for an external tutor. 

Our https://play.google.com/store/apps/details?id=com.app.campk12.hatchxr&;hl=en_IN&gl=US&showAllReviews=true">android & https://apps.apple.com/in/app/hatchxr/id1455713681">iOS apps let you convert all of your 3D / VR games into AR projects and play them while interacting in the real world. 

Watch HatchXR in action: https://www.youtube.com/watch?v=xhU6H6raJGE

Responsibilities

We are looking for candidates who want to work with bleeding-edge technologies and

seek to do things no one has done before, with a group of people who believe in the

utmost transparency and ethical practices.

If you want to work with autonomy, have high ownership of your outcomes, crave for a good challenge, and want to learn and experiment with tech that can change the world, Hatch is the place for you.

• Strong knowledge of Android SDK, different versions of Android, and how to deal with different screen sizes
• Familiarity with RESTful APIs to connect Android applications to back-end services
• Experience with offline storage, threading, and performance tuning
• Familiarity with the use of additional sensors, such as gyroscopes and accelerometers
• Knowledge of the open-source Android ecosystem and the libraries available for common tasks
• Familiarity with cloud message APIs and push notifications
• A knack for benchmarking and optimization
• Understanding of Google's Android design principles and interface guidelines
• Proficient understanding of code versioning tools, such as Git
• Additional advantage if you have worked with / have good knowledge of usingAR-Core

Want to build a business 0 to 1? Come join us! 

Location- Gurgaon (Hybrid)

Timings- Flexible hours

Working days- Monday to Friday (Weekend off)

We are looking for an Android Developer who possesses a passion for pushing mobile technologies to the limits and will work with our team of talented engineers to design and build the next generation of our mobile applications.

Responsibilities:

• Own the entire development lifecycle as you prototype, create, optimize, test, launch, and refine Android apps.
• Build features that will reach millions of users.
• Work with fellow designers and developers in an iterative environment with short and impactful development cycles.
• Develop cutting edge functional modules that will be integrated across all our Android apps.
• Brainstorm, contribute new ideas, conceive innovative strategies, and implement solutions to difficult problems.
• Exploit the most advanced Android APIs and platform features to build innovative applications in food and dining space.
• Work closely with our backend team to interface with RESTful API services and contribute to the backend code when needed.
• Work with real-time feedback from our users to make the product better.
• Discover, design, develop, deploy, debug.
• Focus on Material Design principles and pixel-perfect implementation of the design into code.

Requirements:

• Engineers with 3+ years of experience in shipping consumer-facing Android apps with the large user base, ideally currently available on the Google Play Store (Please be sure to include links to all such apps with your resume).
• Top-notch programming skills in Java, Kotlin and Android.
• Command of memory management, view hierarchy, battery optimization and in-depth experience with multithreaded and networked applications.
• Worked with RESTful APIs, third-party SDK Integrations and common technologies like HTTPS, JSON, OAuth, and SQL.
• Thorough working knowledge of Android Studio with the Gradle build system.
• Understanding the quirks of the fragmented ecosystem of Android OS versions and devices.
• Solid experience with Git.
• Care for quality with an obsession for performance and willingness to spend time testing the team's work as well as yours.