Android Developer

Job Description :

Position Title : Android Developer

Experience : 3+ Years

Summary :

We are looking for an experienced Android Developer with strong Java expertise to join our team. The role involves developing, optimizing, and maintaining high-performance Android applications to ensure excellent user experiences.

Responsibilities :

• Build and maintain Android apps using Java.
• Design and implement new features in collaboration with cross-functional teams.
• Optimize app performance, fix bugs, and improve user experience.
• Integrate third-party libraries and APIs.
• Stay updated with mobile development trends and technologies.
• Write clean, maintainable code following best practices.
• Conduct unit and integration testing.

Required Skills :

• 3+ Years of experience as an Android Developer.
• Proficiency in Java, Android SDK, and Android Studio.
• Experience with RESTful APIs and mobile storage solutions (e.g., SQLite, Firebase).
• Strong debugging and problem-solving skills.
• Familiarity with Git and UI design principles.

Preferred Skills :

• Knowledge of Kotlin and Android Jetpack libraries.
• Experience with CI/CD pipelines and publishing apps on Google Play.
• Understanding of Material Design guidelines.

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.

JD- Senior Flutter Developer

We are seeking an experienced Senior Flutter Developer with 3-5 years of experience to join our dynamic team. The ideal candidate will have a strong background in mobile app development using Flutter, with a focus on building high-quality, performance-driven applications.

Key Responsibilities:

• Mobile App Development: Design and develop mobile applications using Flutter framework, ensuring high performance, responsiveness, and scalability.
• UI/UX Design Implementation: Translate UI/UX designs into high-quality code, with a focus on maintaining consistency and adherence to design guidelines.
• Cross-Platform Development: Leverage Flutter's cross-platform capabilities to develop applications that run seamlessly on both iOS and Android platforms.
• API Integration: Integrate with backend services and APIs to fetch and process data, ensuring seamless communication between the mobile app and server-side components.
• Code Optimization: Identify and address performance bottlenecks and optimize code for maximum efficiency and speed.
• Testing and Debugging: Conduct thorough testing and debugging to ensure the stability and reliability of the mobile applications.
• Version Control: Collaborate with the development team to manage code repositories using version control systems such as Git.
• Documentation: Maintain comprehensive documentation for codebase, APIs, and development processes to facilitate collaboration and knowledge sharing.

Requirements:

• Bachelor's degree in Computer Science, Engineering, or related field.
• 3-5 years of experience in mobile app development, with a focus on Flutter framework.
• Proficiency in Dart programming language and Flutter SDK.
• Strong understanding of mobile app architecture and design patterns.
• Experience with state management solutions such as Provider, Bloc, or Redux.
• Knowledge of RESTful APIs and asynchronous programming.
• Familiarity with mobile app testing frameworks such as Flutter Test or Mockito.
• Excellent problem-solving and debugging skills.
• Strong communication and collaboration abilities.
• Experience with agile development methodologies is a plus.

Job Description:

• Strong working experience in IOS application development is a must. First-hand experience of native mobile apps using Swift must.
• Experience with Swift, RxSwift, Swift UI, Unit test.
• Strong system design and architecture skills - specifically for IOS. Curiosity to tinker around, explore new paradigms and strongest for continuous improvement. Strong problem-solving skills.
• Understanding of network connections, Rest API'sand scheduling. Strong knowledge about security standards (e.g. HTTPS) and privacy standards.
• Idea/experience of the unit and instrumentation testing in IOS. Optimizing app performance and memory consumption.
• Leveraging community libraries to efficiently complete development tasks.
• Debugging apps using simulators and related tooling.
• Persisting data for offline-first apps using databases such as Realm.
• Localizing apps to support multiple languages and regions, vernacular libraries and fonts.
• Familiar with Version control system such as GIT.

• 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

• BS/MS degree in Computer Science, Engineering or a related subject
• 3 years 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
• 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.

About Plum

We are making health insurance - simple, accessible and affordable. Hundreds of businesses of all sizes from startups to large corporates trust Plum for their employee's health protection.

Healthcare in India is seeing a phenomenal shift. Healthcare cost is seeing an inflation that is three times the general inflation. Treatments of diseases including Covid-19 can wipe out entire household savings. The majority of Indians won't be able to afford health insurance on their own. As many as 600mn Indians would depend on employer-sponsored insurance.

Enter Plum. Plum is re-imagining the health insurance stack and accelerating the penetration of health insurance in India to 100%. Plum has forged new underwriting and fraud detection algorithms to enable companies as small as 2 to benefit from group insurance. The platform enables realtime insurance design & pricing to enable companies to buy insurance in 3-clicks. And offers employees hassle-free claims experience through an integrated digital process.

Plum is backed by leading global investors including Tiger Global, Sequoia Capital, Tanglin Ventures and Incubate Fund (read more https://www.plumhq.com/blog/plum-series-a-funding">here)

• Design, build, and maintain high-performance, reusable, and reliable Java code. 
• Translate designs and wireframes into high-quality components and modular code, ensuring the best possible performance, quality, and responsiveness of the application
• Strong advocate of Google’s iOS design principles and interface guidelines
• Strong sense of ownership and integrity demonstrated through clear communication and collaboration.
• Having experience with building and maintaining an open source project or design library is a plus. 

• 3 + years of experience of iOS SDK, Swift and how to deal with different screen sizes. 
• Experience with local databases, offline storage, threading, and performance tuningFamiliarity with RESTful APIs to connect iOS applications to back-end services
• Familiarity with the use of additional sensors, such as camera, gyroscopes and accelerometers
• Knowledge of the open-source iOS ecosystem and the libraries available for common tasksAbility to understand business requirements and translate them into technical requirements

Job description

Roles and Responsibilities

• Design and build advanced applications for the IOS platform
• Maintain quality and ensure responsiveness of applications.
• Collaborate with the rest of the engineering team to design and launch new features.
• Collaborate with cross-functional teams to define, design & deploy.
• Work with outside data sources and APIs
• Unit-test code for robustness.
• Work on bug fixing and improving application performance
• Maintain code integrity and organization.

Desired Candidate Profile

• 2+ Years should be required in iOS development.
• Should be well aware about iPhone/iPad application development
• Should be well versed with Core data concepts
• Should be well versed with Swift-UI
• Should be well versed with Network load optimisations & other core networking concepts
• Must be very good with designing pixel perfect UI
• Good to have Core Audio, Graphics & video frameworks.
• Good knowledge of app deployment process & good to have knowledge on build automation.
• Should have decent communication skills to be able to interact with Clients.

- B.E/M.C. A Or B.C.A Degree in Computer Science, Engineering, MIS, Or Similar Relevant Field

- 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

- Ability to Design Applications Around Natural User Interfaces, Such As “Touch”

 - 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

- Ability to Understand Business Requirements and Translate Them into Technical Requirements

- 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

- Familiarity with Continuous Integration - Good Knowledge of Kotlin.

- At Least Publish 3-4 Application in the Play Store

 - Knowledge of Cross-Platform And iOS Development Will Be an Advantage.
-  Knowledge of health care and e-commerce domain will be good.