
Mobile / Frontend Software Engineer
at A well funded early stage Bangalore based startup.
Location:- Bangalore
Responsibilities:
1. Design and build highly reliable and performant applications that deliver a great user experience.
2. Own large technical deliverables and execute it in a stuctured manner.
3. Take accountibility of the over health of the applications you build.
4. Platformise components as libraries, utilities and promote reuse.
5. Be able to conceptualise and develop prototypes quickly.
6. Lead by example, mentor and guide team members on everything from structured problem solving to development of best practices.
Requirements:-
1. Deep expertise of the iOS and Android ecosystems.
2. Hands on experience with either React Native, Flutter, Swift or Kotlin.
3. Deep understanding of your tools: Languages, frameworks, systems.
4. Experience with abstracting requiremets into frameworks.
5. Hungry to learn, share knowledge and enjoy mentoring others.
6. Data driven, having customer empathy, striving to build stable, delightful applications.
Option but Desired Requiremet:-
Experience with video streaming and Real Time Communication Technologies.

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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 Overview:
Digixvalley is looking for a skilled and passionate Software Developer to join our dynamic team. The ideal candidate will be responsible for designing, developing, and maintaining high-quality web and mobile applications tailored to client needs.
Key Responsibilities:
- Develop, test, and maintain scalable web and mobile applications
- Write clean, efficient, and well-documented code
- Collaborate with designers, project managers, and other developers
- Troubleshoot, debug, and upgrade existing systems
- Integrate APIs and third-party services
- Ensure performance, security, and responsiveness of applications
Required Skills & Qualifications:
- 2+ years of experience in software development
- Strong knowledge of programming languages (JavaScript, Python, PHP, etc.)
- Experience with frameworks (React, Node.js, Laravel, etc.)
- Familiarity with databases (MySQL, MongoDB)
- Understanding of RESTful APIs and version control (Git)
- Strong problem-solving and communication skills
Preferred Skills:
- Experience in mobile app development (iOS/Android)
- Knowledge of AI-based solutions or cloud platforms
- UI/UX understanding is a plus
Why Join Digixvalley?
- Work on innovative and real-world projects
- Growth-oriented and collaborative environment
- Opportunity to learn and work with modern technologies
- Flexible and supportive team culture
Job Overview:
Now, we are seeking a skilled Kotlin Developer with around 2+ years of experience to join our team. The ideal candidate will be responsible for developing and maintaining high-performance Kotlin-based applications while ensuring best practices in architecture, security, and performance optimization.This is your chance to make an impact, and we’re here for it.
Key Responsibilities:
● Develop, enhance, and maintain Kotlin-based applications.
● Work with local databases such as Room, SQLite, and Realm for efficient data storage.
● Integrate API services using Ktor, Retrofit, and OkHttp for RESTful and GraphQL-based communications.
● Implement Kotlin Coroutines & Flow for asynchronous programming.
● Follow Clean Architecture and MVVM/MVI principles for scalable and maintainable code.
● Optimize application performance, security, and responsiveness. Write and maintain unit and integration tests to ensure application stability.
● Stay updated with Kotlin, Jetpack components, and the latest industry best practices.
What We're Looking For:
● 2+ years of experience in Kotlin development (Android or KMM).
● Strong knowledge of local database management (Room, SQLite, Realm, or SQLCipher).
● Expertise in API service integration using Ktor, Retrofit, or OkHttp.
● Hands-on experience with Kotlin Coroutines & Flow for efficient asynchronous programming.
● Strong understanding of Jetpack components (LiveData, ViewModel, Navigation, WorkManager, etc.).
● Experience in designing applications following Clean Architecture, MVVM, or MVI patterns.
● Knowledge of dependency injection frameworks like Dagger/Hilt or Koin.
● Proficiency in version control systems (Git) and platforms like GitHub, GitLab, or Bitbucket.
● Experience with unit testing using JUnit, MockK, or Espresso.
● Understanding of performance optimization techniques for Kotlin applications.
1. Understanding of the Mobile Application Development lifecycle
2. Hands-on experience with React Native
3. Experience with Redux or Flux or MobX
4. Understanding of Advanced JavaScript – ES6
5. Understanding of Flexbox
6. Preferable experience with iOS (Swift) or Android (Java) development
7. Understanding of iOS/Android module integration
8. Deploying iOS and Android apps on Apple Appstore and Android Play Store.
9. Ability to work in an Agile environment
KRAs includes :
1. Understanding the scope of work
2. Working with the design, programming & testing team on project estimates & timelines
3. Coordinate with team to build assets to be used within the mobile application
4. Build Application static flows using React Native with Redux or MobX
5. Integrate JSON web services
6. Working with the tester to fix bugs reported by the testers
7. Building and deploying the application to the app store
• based web and mobile applications using React ecosystem
• Work as a part of a small team that includes other react native
• developers, designers, QA experts, and managers
• Build app and UI components from prototypes and wireframes
• Work with native modules as and when required
• Use Native APIs for tight integrations with both platforms – Android and IOS
• Write automated tests to ensure error-free code and performance
• Improve front-end performance by eliminating performance bottlenecks
• Create front-end modules with maximum code reusability and efficiency
• Implement clean, smooth animations to provide an excellent user Interface
• Work with third-party dependencies and APIs
• Work with Redux architecture to improve performance of the websites/mobile apps
• Significant experience working with React web and mobile along with tools like Flux, Flow, Redux, etc.
• In-depth knowledge of JavaScript, CSS, HTML, functional programming, and front-end languages
• Strong knowledge of React fundamentals such as Virtual DOM, component lifecycle, and component state
• A complete understanding of the full mobile app development lifecycle right from prototyping
• Knowledge of type checking, unit testing, typescript, prop types, and code debugging
• Experience working with REST APIs, document request models, offline storage, and third-party libraries
• Strong understanding of web technologies like JavaScript, HTML, and CSS
• Knowledge of user interface design and responsive designs
• Well-versed in a variety of React Native software and technologies such as Jest, Enzyme, ESLint, and so on
• Experience working on large, complex web and mobile apps
• Ability to create and maintain smooth continuous integration and continuous delivery pipeline of React Native applications
• Understanding of React Native best principles and design aesthetics
• A positive mindset and continuous-learning attitude
• Stay updated with new updates, technologies, and news of React Native
• Ability to solve issues and contribute to libraries as and when needed
• Experience working in an agile development environment
• Strong verbal and written communication skills to communicate strategy
• Familiarity with modern front-end tools and building pipelines
• A collaborative approach to build apps and solve complex problems
• Attention to detail and problem-solving skills
• Client-focused approach with a goal of creating user-centric designs
• Good interpersonal, communication, and collaboration skills
• Ability to write clean, well-documented code that follows good coding practices
Simultaneously develop app and target for both Android and iOS using third party SDKs and APIs
Required – React Native, Firebase Integration, Third Party SDK integrations
Roles, Responsibilities and Experience:
- Cross-platform mobile app developer who has developed mobile applications and has strong experience with Ionic and Angular 7+.
- Experienced in the development and management of mobile applications, particularly hybrids (Android / iOS)
- Comprehensive experience in mobile application architecture planning
- Well qualified in mobile application design and optimization. The ideal candidate will be able to provide solutions to improve mobile app quality, understand emerging technologies, implement standards and best practices thereby able to enhance the existing stage of development and bring the mobile application, from a product standpoint, 'to the next level'
- Continuously discover, evaluate and implement new technologies as well as frameworks so as to maximize ongoing development efficiencies
- Accurately estimate development timelines and deliver per set schedule
- Solid knowledge of mobile app development practices, along with mobile testing tools and techniques
- Expertise in optimizing the mobile apps' performance
- Experienced in using Agile principles and methodologies
- A deep understanding of the mobile landscape and user behavior patterns is mandatory
Required Skills:
- Experience using web services (HTTP, REST, SOAP) using JSON.
- Knowledge of NodeJS and MongoDB will be an added advantage.
- 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
- Strong mobile UI design (multi-screen resolutions), coding, support and maintenance
- Knowledge of HTML5, JavaScript, and the third-party API (like Facebook, Twitter, etc.) will be added advantage
- Experience with third-party libraries and APIs
- Proficient iOS and Android mobile app experience are a plus
Collaborate with cross - functional terms to define and design new features .
Work on bug fixing and improving applications performance.
Hands on experience in optimizing code for application performance.
Ability to deliver projects on time by satisfying clients needs .
Wiriting modular , resuable, maintainable , well documented and fully tested code.











