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 Title: Mobile Developer (React Native/Flutter)

Location: Hybrid

Employment Type: Full-time

About Us:

We are a startup building a marketplace for maids. Our mission is to connect customers with service providers through a seamless, user-friendly mobile application. We are looking for a passionate Mobile Developer to join our team and help shape the future of our platform.

Role Overview:

As a Mobile Developer, you will be responsible for developing and maintaining our mobile application using React Native or Flutter. You will work closely with designers, backend engineers, and product managers to deliver high-quality, scalable, and user-friendly experiences.

Key Responsibilities:

• Design, develop, and maintain mobile applications using React Native or Flutter.
• Collaborate with cross-functional teams to define, design, and ship new features.
• Ensure the performance, quality, and responsiveness of applications.
• Write clean, maintainable, and efficient code following best practices.
• Troubleshoot and debug issues, optimizing application performance.
• Participate in code reviews to ensure code quality and share knowledge.
• Stay updated on the latest mobile development trends and technologies.

Requirements:

• 2+ years of professional experience in mobile development with React Native or Flutter.
• Strong understanding of JavaScript (React Native) or Dart (Flutter) and mobile development frameworks.
• Experience integrating RESTful APIs and third-party libraries.
• Familiarity with mobile UI/UX standards and best practices.
• Knowledge of version control systems (e.g., Git).
• Experience with state management (Redux, MobX, Provider, etc.).
• Strong problem-solving skills and attention to detail.

Nice-to-Have:

• Experience with native development (Android/iOS).
• Familiarity with CI/CD pipelines for mobile applications.
• Knowledge of Firebase services (e.g., Authentication, Firestore).
• Experience working in Agile environments.

What We Offer:

• Competitive salary and equity options.
• Flexible work environment (hybrid).
• Opportunity to shape the future of a high-growth startup.
• Collaborative and supportive team culture.
• Professional development and learning opportunities.

Drona Infotech is one of the best Mobile App Development Company in Noida. Looking for a reliable mobile app development. Look no further than Drona Infotech. We offer customized solutions to help your business thrive in the digital world.

Android Developer, Gurgaon

About Hive  

Hive is the leading provider of cloud-based enterprise AI solutions to power the next wave of intelligent  automation. We offer a portfolio of best-in-class deep learning models, built with consensus-validated  training data sourced and annotated by our distributed workforce of more than 2 million contributors  globally. Hive's APIs enable use cases including automated content moderation, contextual advertising,  advertising and sponsorship measurement, document parsing, and more. We process billions of API requests  per month for many of the world's largest and most innovative companies.  

Hive has raised over $120M in capital from leading investors, including General Catalyst, 8VC, Glynn  Capital, Jericho Capital, Bain & Company, Visa Ventures, and others. We have over 220 employees globally in our San Francisco and Delhi offices. 

About Role  

In order to execute our vision, we need to grow our team of best-in-class engineers. We are looking for  talented Android developers who will thrive in an autonomous engineering-driven environment. You will  take ownership of a product and have the ability to shape product direction.  

Responsibilities  

• Design and develop a delightful Android application for our users, with a focus on simplicity of use and high-performance  
• Write product-independent code and design modular APIs to be used across all of our products  
• Work across disciplines with team members from front-end, backend, design, and product  
• Help ensure we’re bug-free by writing unit-tests, and regularly communicating with our QA team  
• Actively participate in product decisions, ensuring we set reasonable development deadlines  

Requirements  

• Strong development skills with Kotlin/Java and the Android SDK  
• You have an understanding of MVP and / or MVVM  
• You understand the ins and outs of RESTful web services  
• You have experience developing, releasing, and maintaining Android applications on top of RESTful  APIs 
• You have fundamentals in OO-design, data structures, and problem solving 
• You have great communication skills and ability to work with others  
• You have experience shipping quickly and often, while still maintaining test coverage 
• You are a team player-no job is too small or too big!  

• 3+ years proven work experience as a Mobile developer.
• Experience using web services (HTTP, REST, SOAP) using JSON, API and API Framework) .
• Good knowledge of object-oriented design patterns and Multi-threading concepts
• Good knowledge of the SQLite database and the Google Play Services like Push Notifications (fcm/sns)
• Strong mobile UI design (multi-screen resolutions), coding, support and maintenance
• Knowledge of HTML5, Bootstrap, JavaScript,
• Experience with third-party libraries and APIs (like Facebook, Twitter, etc.)
• Proficient iOS and Android mobile app experience are a plus
• In-depth knowledge of at least two Framework/Libraries like React Native / Ionic / Framework7 / Aurelia / PhoneGap / Flutter and angular / react / vue / Mobile Angular UI/ Kendo UI.
• Knowledge of bench marking and optimization
• Mandatory : self sufficient developer and must have prior experience of hybrid development [atleast 3 projects]

• The main roles and responsibilities would be:
• Deliver high quality mobile apps on Android platforms.
• Create best practice, drive initiatives to build reusable frameworks, components and solutions.
• Engage with the team to create a knowledge centre on Android.
• Minimum experience of 1 years needed. Ideally more than 2 years.
• Maps based apps.
• Payment gateway integration: (PayPal, Stripe, Paytm etc).
• Integration of webservices
• Marketplace apps
• Live Streaming
• Offline application development.
• Strong OO design and programming skills in Java
• Android SDK
• JSON/REST API
• Social Media APIs
• UML/Design Pattern
• Knowledge of Retrofit,Volley,Dagger2,Realm,RxJava,Espresso
• Knowledge of android architecture component(LiveData etc).
• Working Experience on MMVM and MVP architecture
• Experience in SQL and NOSQL databases.
• Familiarity with cloud message APIs and push notifications 
• Understanding of Googles Android design principles and interface guidelines 
• Proficient understanding of code versioning tools, such as Git.
• Work closely with the leadership team to define roadmap and development plans
• Help define and implement standards and promote best practices for the Android development team
• Tackle daily challenges with your creative problem solving recommendations
• Mentor and contribute knowledge to the rest of the team and the organization
• Strong knowledge of Android UI design principles, patterns, and best practices
• Experience with threading, and performance tuning
• Ability to understand business requirements and translate them into technical requirements

At Cityflo, we are solving the problem of commuting to the office which affects employees in big, populated Indian cities every day. Cityflo provides a bus experience like no other - we run premium AC buses for daily commuters.  We’re changing the way urban Indians commute and enabling everyone to reclaim hours of their time every day. Before the imposed lockdown due to coronavirus, we were serving about 7500 commuters per day. We plan to scale to 5,00,000 rides per day in the next 4 years in a profitable and sustainable manner.

We're looking for people who are passionate about creating great Android applications.
You've been around for a few API levels and you know how to delight Android users. You’ve got an eye for the beautiful Android design our users expect and an attention to detail down to the very last dpi. You know your way around the View hierarchy and are eager to partner with Product and Design to craft efficient, performant, and delightful user experiences. You like building for the long term and value patterns and structures that allow for maximum flexibility in a constantly evolving product.

You can read more about our engineering and culture on our blog: https://blog.cityflo.com/tag/engineering/" target="_blank">https://blog.cityflo.com/tag/engineering/

What you should have:

• At least three years of engineering experience, a large portion of which in a team environment
• Bachelors/Masters degree in Computer Science, Engineering, or a related subject.
• Strong computer science fundamentals: data structures, algorithms and programming languages
• Experience working closely with product teams, designers, and other developers to create a truly delightful mobile experience
• Familiarity with design concepts and constraints on mobile platforms.
• Extensive understanding of Android framework components and their respective lifecycles
• Experience developing highly performant Kotlin code and view layouts and the ability to diagnose performance bottlenecks
• A disciplined approach to development, testing, documentation and code structure in a team environment
• Familiarity with the Android tool ecosystem for development, testing, debugging, and performance benchmarking
• An excellent understanding of best practices for concurrency and threading
• MVVM design architecture pattern for android.

Preferred skills:

• Open Source contributions & participation in programs like Google Summer of Code are a plus.
• Have published one or more Android apps on the Play Store.
• Dependency injections: Dagger, Koin.
• Multi-threading and coroutines in Kotlin/Rxjava.