Flutter/React Native 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 DETAILS:

Job Role: Android Developer

Experience: 6-8 years

Location: India (remote)

JOB DESCRIPTION:

1.            Handson exp in Kotlin and Android studio

2.            Good understanding of Core Java

3.            Experience in JSON parsing

4.            Experience in REST API

5.            Experience in Junit test cases

6.            Well versed in Latest Android API version.

7.            Experience in publishing apps to the App Store.

8.            Social Networking site integration

9.            Code version tool – Git and JIRA

10.          Architecture understanding - MVVM, MVP

11.          Strong analytical and debugging skills/ Unit test coverage

12.          Ability to do design and high level architecture

Job Summary

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. Your primary focus will be the development of Android applications and their integration with back-end services.

Responsibilities

• Conceptualizing and formulating apps that are suitable for use on all types of Android devices.
• Implementing measures to safeguard users' data.
• Ensuring that the construction and presentation of your apps are congruent with the company's standards.
• Proofreading your code and correcting mistakes before each app is released.
• Collaborating with UI and UX Designers, as well as Software Testers, to ensure that each app is presentable and in perfect working order.
• Liaising with the marketing department to ensure consistency in our company's 'voice' across the board.
• Monitoring app reviews to detect areas for improvement.
• Creating app updates, including bug fixes and additional features, for release

Requirements

• min. 2+ years of experience as an android developer
• Proficiency in Java, Kotlin, or C++.
• Ability to use the Android Studio, including the Android SDK, with ease.
• Prior experience as an android developer will be advantageous.
• Excellent coding and proofreading skills.
• Top-notch teamwork and communication skills.
• Ability to manage your workload with minimal supervision.
• Unwavering curiosity.

Benefits

• Opportunity to work with early stage start up and grab a front row seat in core engineering team
• ESOPs available
•  

• Should have 5+ hardcore experience in Android Mobile App development
• Proficient in Kotlin, Android SDK with Location tracking, Route map, Google Map/ Voice API Integration, Regional language support etc.
• Understanding of design patterns and mobile architecture using frameworks such as MVVM / MVC / MVP.
• Familiarity with RESTful APIs and integration and code versioning tools such as Git.
• Problem solver with good analytical skills.
• Passion to work in dynamic, start-up environment.
• Compensation best in the industry

https://www.alivecor.com/">AliveCor, the pioneer of the smartphone EKG, with millions of EKGs from a large and growing user base, seeks a Senior Android Software Engineer to contribute to the mobile application team. You will be an integral member of our engineering team, responsible for developing industry-leading mobile applications that transform the healthcare industry and affect the way consumers use, engage, and act on their health data.

• Collaborate closely with our AI, security, backend, hardware, and product teams to deliver mission critical software.
• Work in a fast-paced agile environment, delivering quality estimates, designs, and implementations.
• Problem solve for complex global business requirements.
• Accountable for all aspects of modern software development.
• Proactive in identifying problems and a team player when presenting solutions.
• Excellent communications skills.
• Commitment to delivering results.
• Passionate about continuous improvement.

• BE in Computer Science or a related discipline, or related practical experience.
• 5-8 years of Android programming experience. You’ve shipped multiple apps to the Play Store.
• Deep expertise with Java and Android SDKs.
• Experience with Android frameworks such as Retrofit, RxJava, Dagger, Junit, Mockito.
• Experience with modern programming principles, design patterns and development tools.
• Familiarity with RESTful APIs to connect Android applications to back-end services.

AliveCor is on a mission to define modern healthcare through data, design and disruption. We’ve pioneered the creation of FDA-cleared machine-learning techniques, transformed wearable medtech to put proactive heart care at everyone’s fingertips. Kardia is the most clinically validated mobile EKG technology. AliveCor was named as one of the Top 10 Most Innovative Companies in Health for 2017 by Fast Company as part of the publication’s annual ranking of the world’s Most Innovative Companies. AliveCor was awarded the 2015 Tech Pioneer by the World Economic Forum and one of the 50 Smartest Companies in 2015 by the MIT Technology Review. AliveCor recently announced a collaboration with Mayo Clinic that will result in new machine learning capabilities to unlock previously hidden health indicators in EKG data, potentially improving heart health as well as overall health care for a variety of conditions. AliveCor is a privately held company headquartered in Mountain View, CA.

Watch the following video demonstrating our product.

https://www.youtube.com/watch?v=8I9xosgA-Ig">KardiaMobile: How's your heart?
https://www.youtube.com/watch?v=8I9xosgA-Ig">https://www.youtube.com/watch?v=8I9xosgA-Ig

We are looking to hire a React Native Mobile App Developer for a Singapore based Fintech startup. A joint venture of Singapore Stock Exchange and Temasek an investment company has recently acquired a minority stake in the company. Candidates must have a strong understanding of end-to-end flows encompassing front-end, application server, APIs and databases. The candidates must possess strong programming skills.

Requirements:

• Has demonstrable experience in building mobile apps for iOS and Android using React Native.
• The candidate must have at least 2 years of relevant experience in mobile app development.
• Detail-orientation and appreciation of usability, design and aesthetic elements is a must.
• Overall experience of 3-8 years, with relevant educational background or certifications.  

Responsibilities:

• Develop and maintain the partner(fleet) application.
• Sit with the core team to learn and address various complications through tech.
• Attend meetings to understand the intricacies of the business and implement quick features/automation to improve the application.

Requirements:

• If you can develop flutter applications, then go ahead and click Apply. Added Advantage - If you have experience in MERN stack.

Requirement::

• Must Have worked with Flutter / Android Application development.

• Excellent ability to develop & understand algorithms

• Excellent verbal & written communication.

• Strong knowledge in Restful web services. Experience in interacting with web services from the Flutter mobile platform

• Experience with Offline Storage, Threading, And Performance Tuning

• Strong knowledge in Push Notifications

• Analytical, Problem Solving and Decision Making Skills.

• Should have knowledge on client requirements analysis.

Website - https://praxinfo.com/">https://praxinfo.com/