Android Framwork experts

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.

Responsibilities:

• Writing clean and efficient codes for iOS applications

• Supporting the entire application lifecycle from concept to design, testing, release and support

• Troubleshooting and bug fixes for applications, to ensure that codes are clean and secure

• Recommending changes and enhancements

• Staying up to date with new mobile technology trends, applications, and protocols

Required skills:

• Degree in Computer Science, Engineering or a related field

• You have prior experience as an iOS Developer

• You have a portfolio of released applications on the App Store

• You are familiar with mobile product and design lifecycles

• You have proven experience in iOS development in either Objective-C / Swift

• Experience with iOS frameworks (Eg. Core Data, Core Animation etc.)

• Familiarity with RESTful APIs to effectively integrate iOS applications

• Good understanding of iOS release cycle and familiarity with CI/CD platform and pipelines

• Proficient understanding of code versioning tools (eg. Git)

• Familiarity with various testing tools

Job Description

We are looking for an iOS developer responsible for the development and maintenance of applications aimed at a range of iOS devices including mobile phones and tablet computers. Your primary focus will be development of iOS applications and their integration with back-end services. You will be working alongside other engineers and developers working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and the creation of quality products is essential.

Responsibilities:

• Design and build applications for the iOS platform
• Ensure the performance, quality, and responsiveness of applications
• Collaborate with a team to define, design, and ship new features
• Identify and correct bottlenecks and fix bugs
• Help maintain code quality, organization, and automatization

Skills

• Proficient with Objective-C or Swift.
• Familiarity with RESTful APIs to connect iOS applications to back-end services
• Knowledge of other web technologies and UI/UX standards
• Understanding of Apple’s design principles and interface guidelines
• Knowledge of low-level C-based libraries is preferred
• Familiarity with cloud message APIs and push notifications
• Knack for benchmarking and optimization
• Proficient understanding of code versioning tools (such as Git, Mercurial or SVN)
• Familiarity with continuous integration

Education Qualification:

• Undergraduate in Engineering related to Computer Science and Information Technologies and Postgraduate in Computer Science
• Shouldn’t have Backlog or Arrear.
• Must have completed at least 3 month course.

We are seeking a talented Android Native Kotlin Developer to join our team. As an Android Developer, you will be responsible for designing, developing, and maintaining high-quality Android applications using Kotlin. You will collaborate with cross-functional teams to deliver user-friendly and efficient mobile solutions that meet business objectives.

Key Responsibilities:

1. Design and develop Android applications using Kotlin, adhering to best practices and coding standards.
2. Collaborate with product managers, UI/UX designers, and backend developers to define and implement features.
3. Write clean, efficient, and maintainable code with proper documentation.
4. Conduct thorough testing and debugging of applications to ensure high quality and performance.
5. Optimize application performance and troubleshoot any issues that arise.
6. Stay up-to-date with the latest industry trends, tools, and technologies related to Android app development.
7. Participate in code reviews to ensure code quality and provide constructive feedback to team members.
8. Work in an Agile development environment, actively participating in sprint planning, stand-ups, and retrospectives.
9. Collaborate with QA engineers to ensure proper testing and delivery of bug-free applications.
10. Continuously improve development processes and contribute to the overall improvement of the Android development team.

Qualifications and Skills:

1. Bachelor's degree in Computer Science, Software Engineering, or a related field.
2. Proven experience in Android app development using Kotlin.
3. Strong knowledge of Android SDK, Android Studio, and related development tools.
4. Solid understanding of object-oriented programming (OOP) principles.
5. Experience with RESTful APIs, JSON, and web services integration.
6. Proficient in version control systems such as Git.
7. Familiarity with agile development methodologies.
8. Strong problem-solving and analytical skills.
9. Excellent communication and collaboration abilities.
10. Ability to work effectively both independently and in a team environment.

Additional Preferred Skills:

1. Experience with Android Jetpack components (e.g., LiveData, ViewModel, Room, Navigation).
2. Knowledge of reactive programming using frameworks like RxJava or Kotlin Coroutines.
3. Familiarity with dependency injection frameworks like Dagger or Koin.
4. Understanding of Material Design guidelines and UI/UX principles.
5. Experience with automated testing frameworks like Espresso or JUnit.
6. Knowledge of software development best practices, including continuous integration and continuous deployment (CI/CD).
7. Prior experience working on large-scale mobile applications.

Do Your Thng 

https://doyourthng.com/" target="_blank">https://doyourthng.com/ 

About us:

DYT - Do Your Thng, is an app, where all social media users can share brands they love with their followers and earn money while doing so! We believe everyone is an influencer. DYT - Do Your Thng (DYT) is a creator community platform with an overarching vision to democratise influence and build a thriving creator community. We offer two solutions- an app for creators that helps them make a living out of content creation, and a self-serve web desk module for marketers to execute influencer campaigns in a quick, frictionless, targeted, and economically attractive manner.

Role : Android Developer

RESPONSIBILITIES 

• Design components by translating product requirements, break down projects into tasks, and provide accurate estimates. Build scalable and reliable technology solutions at a rapid pace
• Work on native Android as well as Angular tech stack while keeping performance goals in mind
• Independently come up with different solutions, extensible Low-level design. Write modular, extensible, readable, and performant code
• Strong unit test and debugging skills 
• Proficient understanding of code versioning tools (git) 
• Excellent interpersonal, leadership, influence, and communication skills 
• Build, develop, mentor, and coach junior team members 

QUALIFICATIONS 

• Must have Working Experience in a product-based organization for at least 18 months.
• At least 2+ years experience and hands-on with mobile technologies
• At least one product build and publish 
• Work well under pressure and meet deadlines without sacrificing quality 
• Work with distributed development teams 
• Ability to resolve problems with support and must understand the mobile ecosystem and its limitations.
• Understand Android Architecture components, strong fundamentals in Android technologies, and aware of new Android changes

SKILLS  REQUIRED 

• Experience with kotlin is a must
• Knowledge of mvvm architecture/ android architecture components
• Knowledge of Rxjava and coroutines for multithreading
• Knowledge of retrofit/okhttp for making HTTP calls
• Knowledge of dependency injection using dagger2
• Knowledge of android framework components like services, fragments, intent services
• Knowledge of sql required 
• Experience in offline data management
• Write well designed, testable, efficient code 

Role & Responsibilities:

• Design and build advanced applications for the iOS platform
• Collaborate with cross-functional teams to define, design, and ship new features
• Work with outside data sources and APIs
• Integrate features with wearables and other IoT devices
• 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

Education & Qualification Requirement:

• Bachelor of Engineering, preferably in Computer Science of Information Technology

Desired Skills and Experience:

• You have 3+ years of iOS app development experience using Swift.
• Published apps in the App store
• Have a good sense of how networked applications (Web services/REST APIs and JSON) work
• Well versed with server side syncing, database handling etc.
• Sharp analytical skills - find out edge cases both in code and usability/product.
• Ability to learn and adapt fast.
• Collaborate with cross-functional teams to define, design, and ship new features.
• 2+ years experience in any UNIX environment
• Experience implementing and maintaining unit tests
• Interest in privacy and the protection of personal information
• Good grasp of the fundamentals of UI layout designing, mobile UI components, using common themes and styles.
• Working knowledge of the general mobile landscape, architectures, trends, and emerging technologies.
• Strong understanding of design patterns, or an opinion on why they're overrated.

Roles and Responsibilities

• Must be self-driven and motivated
• Proficient in writing quality, efficient and performant code for iOS app, using Swift
• Follow right architecture and design patterns
• Aware of the agile working environment
• Document design/technical guidelines and spread knowledge across teams
• Responsible for self/peer code reviews
• Viable suggestions with clear understanding of iOS fundamentals 

Requirements :
(Must have skills) 

• Swift (1+ years)
• iOS Fundamentals
• MVVM/VIPER (1+ year)
• SOLID principles
• Third party integrations likes google map, firebase, Analytics
• Know about push notification & deep linking

(Good to have Skills) 

• RxSwift
• SwiftUI
• Swiftgen or any other dependency injection framework
• GCD/OperationQueue
• Core Data
• Performance Optimization (Launch time, App Size, Network)
• XCTest or any other UT framework
• Solved a core level problem (at least 1)
• Have built your own library
• Any apps that have been submitted to app store

We are looking for a Developer / Sr. Developer – Flutter responsible for the development and maintenance of applications aimed at a vast number of diverse devices. The primary focus will be the development of web apps in addition to android and iOS mobile apps applications and their integration with back-end services.

We expect the Developer will have a broad experience at MESKYand will play a unique role in the organization.

He / She will be responsible for creating a hybrid application for both iOS and Android using the flutter development framework. This individual should have deep experience contributing to and managing full-scale production applications. The ideal candidate must display excellent written and oral skills with demonstrated interpersonal and organization abilities and must be able to work in a varied, fast-paced product development environment.

In addition, the ability to self-manage and work independently is a must as this role is a remote role.

Responsibilities and Duties:

1. Design and Build sophisticated and highly scalable apps using Flutter.

2. Build custom packages in Flutter using the functionalities and APIs already available in native Android and IOS.

3. Translate and Build the designs and Wireframes into high-quality responsive UI code.

4. Explore feasible architectures for implementing new features.

5. Follow the best practices while developing the app and also keeping everything structured and well documented.

6. Manage the code and project on Git in order to keep in sync with other team members and managers.

7. Communicate with the Project Manager regarding the status of projects and suggest appropriate deadlines for new functionalities.

8. Ensure security guidelines are always followed while developing the app.

9. Maintaining software through product lifecycle including design, development, verification, and bug fixes.

10. Perform time profiling and memory leaks assessment.


Requirements: Attributes, Experience:

2 to 4 Yrs experience.

•  Flutter: To build cross-platform mobile apps for Android, IOS, and Web. This should include making responsive UIs to efficiently query data and also manage states in an optimized manner.
• Firebase: Should have experience with Cloud Firestore, Push Notifications, Cloud Functions, and Analytics
• Adobe XD: Should know how to use Adobe XD to use the design file and use it to build the app.
• Git: To manage and collaborate in different projects with the rest of the team.
• Continuous integration, and experience in deploying apps to AWS, Azure, or any other cloud platforms