However, Most importantly, you will need to be very passionate about building products and will need to thrive in a startup environment.
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.
- 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 & Qualifications
- BE/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 and have published at least 5 original Android apps
- Experience with integrating various Android SDKs
- Knowledge of developing own Android SDKs for distribution to other developers
- 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
Most important requirements and TLDR -
- Know how to build android applications and integrate APIs/SDKs
- Know how to create android SDKs
- Have built and launched atleast 5 android apps
- Ability to build complex apps on Android

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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.
JOB TITLE: Android Developer Flutter
ROLES & RESPONSIBILITIES
- 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
- Ensure lightweight and highly responsive app
- Extending the features as per requirement
- Write expressive code that is clear enough to compensate for simple documentation
- Continuously discover, evaluate, and implement new technologies to maximize development efficiency
REQUIREMENTS
- 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 and
- Have published at least one original Android app
- Experience with Android SDK, design principles, patterns, c,c++ and best practices
- 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
- Experience in using git preferably with github or bitbucket
- Familiarity with Google Maps API, push notifications, firebase, Dart,SMS gateways and Payment gateways
- Solid understanding of the full mobile development life cycle.
Experience: 4+ years
JOB TYPE: Full-time
JOB LOCATION: Lower Parel, Mumbai
Bottom-Funnel provides the system and framework that modern marketers need to generate clients from scratch.BOTTOM-FUNNEL is a 360° digital branding and marketing agency that provides a wide spectrum of internet marketing services to enhance the online presence of all kinds of businesses. We offer global solutions of digital marketing and all IT trending technology solutions, communication through classifieds, web portals, social media networks, advertising channels, and search engines. Our digital experts and business consultants help clients by providing only the best digital marketing strategy to develop through innovation and creativity.
Employment Type: Employee - Full Time
Work Location: Jaipur, Rajasthan ( Work From Office Only)
Notice Period : Immediate - 15 Days 30 Days only
Job Summary
An Android developer is responsible for developing applications for devices powered by the Android operating system. Due to the fragmentation of this ecosystem, an Android developer must pay special attention to the application’s compatibility with multiple versions of Android and device types. They must also have a strong understanding of the patterns and practices that revolve around such a platform.
Responsibilities
• Design, build and maintain high performance, reusable, and reliable Kotlin code.
• Ensure the best possible performance, quality, and responsiveness of the application. Help maintain code quality and automatization.
• Should be familiar with architectural patterns like MVP, MVVM, MVC.
• 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.
• Strong knowledge of Android UI design principles, patterns, and best practices
• Experience with offline storage, threading, and performance tuning
• Knowledge of the open-source Android ecosystem and the libraries available for common tasks
• Build lightweight, low latent Android applications with limited or no dependency on third-party modules.
• Unit-test code for robustness, including edge cases, usability, and general reliability
Must Have:
Exposure to Kotlin, RxJava / LiveData / Coroutines, Caching & Database
Good to Have:
• Minimum of 2+ years of experience in Java
• 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
• Strong knowledge of Android UI design principles, patterns, and best practices
• Camera APIs, Exoplayer, Profiling & Performance Tuning, Unit Testing.
• Design and build applications for Android devices.
• Maintain quality and ensure responsiveness of applications.
• Collaborate with the rest of the engineering team to design and launch new features.
• Maintain code integrity and organization.
• Be proficient with Java and Kotlin.
• Experience with offline storage, threading, and performance tuning.
• Must be familiar with RESTful APIs to connect android applications to back-end services.
• Experience with cloud message APIs and usage of push notifications.
• Knowledge of Git.
Qualifications
• Minimum 2 Years of experience in building Android Apps using
• Strong knowledge of Android SDK
• Familiarity with cloud message APIs and push notifications.
• Proficient understanding of code versioning tools such as Git, SVN, bit bucket
• Experience detecting and correcting memory usage issues as well as optimizing code for application performance
• Unit-test code for robustness, including edge cases, usability, and high reliability
• Work with modern tools including Jira, Slack, GitHub, Google Docs, etc
• Rock solid at working with third-party dependencies and debugging dependency conflicts
• Experience with task planning and estimating effort
• Strong collaborator and comfortable to work in an agile, remote and distributed team environment
Benefits :
- Opportunity to work on highly challenging international projects.
- Opportunity to travel & work with International clients.
- Flexible and friendly work environment
- Great organisational culture, focus on employee's well-being.
- Work-life balance.
- Be part of the best place to work for certified company

• Proficient in Data Structure and Algorithms
• Proficient in Java, Kotlin and concepts like Kotlin coroutines, Jetpack components.
• Good understanding of various Android tools, Systrace and Perfetto for performance measuring,
memory management, battery, frame drops.
• Always on the lookout for new developments in the Android world and improving things.
• Familiarity with networking, databases, threading and memory concepts.
• Hands-on with code reusability, clean architecture, modularization, build time optimizations.
• Familiar with various third-party tools, libraries widely used and under the hood understanding.
• Understanding and hands-on with Material design principles and interface guidelines.
• Familiarity with cloud message APIs and push notifications.
• Proficient understanding of code versioning tools such as Git.
• Decent understanding of how things work at the backend, reporting and other systems.
• Good understanding of the various CI/CD tools.
• Should have experience in writing Unit and UI tests.
• Good at logical reasoning and data structure.
- 0-2 years of software experience in front-end mobile/web app development
- Good understanding of concurrency and multithreading
- Full Stack development experience building data, logic tier and user experience software
- Exposure to Android SDK (experience in AndroidTV framework will be a plus)
- Knowledge of REST, JSON, MQTT, Databases, Networking technologies
- React | React Native, Multi-platform exposure is a plus
- Experience with Agile development processes is a plus
This person MUST have:
- BE Computer Science, MCA or equivalent
- Mobile app development experience.
- Good understanding of the full mobile development life cycle,strong debugging and problem-solving skills.
- Unit-test code for robustness, including edge cases, usability, and general reliability.
- Strong React Native experience
- Understanding of APIs, pagination,searching,sorting
- Creating high performance UI etc.
- Familiarity with native build tools, like XCode, Android Studio, Gradle.
- Leverage native APIsfor deep integrations with both platforms.
- Strong communication skills.
Experience:
- Min 3 year experience
- Not more than 15 year experience.
Tech @ Omuni, Arvind Internet:
● Our architecture is powered by 50+ microservices, all built on open-source stack
● Our systems process 1+ billion inventory updates a month
● We have best in class integration patterns for fault tolerance and resilience
● We design systems for SaaS offerings, we build for cloud and different form factor
● We have the coolest apps in fashion commerce by combining in-store and digital experiences
● We work on some complex programs involving integrating with disparate external systems
About the role:
Roles & Responsibilities
● Understand functional requirement, design and code
● Preparing high level design(HLD) and low level design(LLD) document
● Adhering to best practices, maintain quality of code and perform unit testing
● Coordinate with other stakeholders to deliver functionality
● Code checkin and code review for peers
● Performance monitoring of application using Firebase and other APM tools, performance tuning
using IDE tools
● Using CI/CD tools to push build to Testflight or other test environments
● Troubleshoot high priority issues
● Mentor junior resources
● Participate in sprint planning and scrum standup calls.
Ideal Candidate profile:
● Understanding of design patterns and MVVM, MVP architectures
● Design and build applications for the iOS platform.
● Proficient with Swift and Swift UI
● Familiarity with RESTful APIs to connect Android applications to back - end services
● Strong knowledge of iOS to build apps for different form factors
● Design, build, and maintain high performance, reusable, and reliable Swift code
● Help maintain code quality and performance monitoring
● Proficient understanding of code versioning tools, such as Git, CI/CD tools
● Experience with performance and memory tuning with tools
● Familiarity with apple push notifications
● Should be able to work in agile environment
● 3-5 year experience in IT with minimum 3 years in iOS app development, Flutter and Dart knowledge
would be great to have
● BTech in CS or any other stream
- Architect, build and maintain excellent React Native applications with clean code.
- Implement pixel perfect UI's that match designs.
- Implement clean, modern, smooth animations and transitions that provide an excellent user experience.
- Integrate third-party API's.
- Write unit and integration tests.
- Release applications to the Apple and Google Play stores.
- Work with native modules when required.
- Work as part of a small team, which will include other React Native developers, a project manager, QA professional, and a designer.
| JD: |
| Excellent knowledge and experience with React Native |
| Extensive, hands-on experience with modern application development incl. application lifecycle, asynchronous server communication, and UI components |
| Experience with State Management Libraries like MobX or Redux |
| Experience with architecture and implementing component based UI frameworks and design systems |
| Experience with consuming REST APIs |
| Firm grasp of the JavaScript/TypeScript language |
| Ability to write well-documented, clean Javascript code |
| Rock solid at working with third-party dependencies and debugging dependency conflicts |
| Familiarity with native build tools, like XCode, Android Studio |
| Should able to design responsive UI |
| Ability to work with Git |
| Experience working with Swift, Objective C, and Java a plus |

- Implementing designs and coordinating the frontend development and required backend for it.
- Working on back-end development tasks and designing architecture for the same.
- Performing research and find opportunities to utilise web development best practices, forming guidelines to improve system productivity, and working on scaling and monitoring.
- Working with cross-functional teams to maintain and make sure the product should be scalable, maintainable and secure.
- Coordinating with multiple junior team members for the development of the tasks & projects
- Developing user interface components and implementing them following well-known React.js workflow.
- Architecting the application out in clean MVC kind of architectures in ReactNative for Android/ iOS app development.
- Developing APIs with MVC frameworks in Java / Python.
- Designing and building REST APIs.
- Building on and maintaining services on cloud platforms.
- Building reusable code and libraries for future use.
What you need to have:
- Bachelor's degree in Computer Science or related field.
- 1+ years of experience working as Android or React Native development
- Built an application from scratch earlier.
- Strong computer science fundamentals.
- The ability to own end to end responsibility - right from requirement to release.
- Willingness and enthusiasm drive to learn new technologies.
- The ability to pick the right tools for the job.
- Desire and ability to play different roles as necessary
- If Android, you should have strong understanding of activity lifecycle, other components like service, broadcast receiver.
- Core knowledge in Rxjava, Rxandroid, retrofit etc. and can work with Kotlin programming language.
- If React Native, should be well versed with React JS and React Native.







