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.

Qualifications:

· Education: Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field, or equivalent experience.

· Experience: Minimum of 5 years of experience in iOS development with a strong portfolio of released applications that can be shared for review.

· Technical Skills:

o Proficiency in Swift and Objective-C.

o Solid understanding of object-oriented programming

o Knowledge of memory management and multi-threading

o Experience with embedded databases and other system data stores

o Strong understanding of iOS frameworks such as UIKit, Core Data, Core Animation, and Core Graphics.

o Good  knowledge of performance limits and characteristics

o Good sense of UI design execution principles

o Experience with RESTful APIs, JSON, and third-party libraries to connect to backend services.

o Knowledge of mobile app architecture patterns such as MVC, MVVM, and VIPER.

o Experience with version control systems, preferably Git.

o Familiarity with continuous integration/continuous deployment (CI/CD) pipelines.

o Implementation of automated testing platforms and unit tests, benchmarking and optimization 

o Understanding of Apple’s design principles and interface guidelines.

Are you a driven React Native Full Stack Mobile Developer looking for your next challenge?

We area a growing global technology partner is looking for a skilled React Native Full Stack Mobile Developer to join their Technology and Development team.

If you're eager to showcase your expertise and collaborate with a talented group of engineers, this role is perfect for you!

We stand at the forefront of technology innovation, catering cutting-edge solutions to clients spanning diverse sectors. With a strategic emphasis on finance, banking, and corporate verticals, they're known for their excellence in delivery. We are seeking a senior developer to join their global projects team.

About the position.

The Senior React Native Full Stack Mobile Developer candidate will have a strong background in building mobile applications and will be proficient in front-end (React Native) and back-end development.

In addition to technical expertise, the candidate should have experience in testing, browser testing, and thorough documentation practices.

As a senior member of the mobile development team, you will play a critical role in designing, developing, and maintaining mobile applications that provide exceptional user experiences.

Key Responsibilities:

• Mobile Application Development: Design, develop, and maintain mobile applications using React Native for iOS and Android platforms.
• Full Stack Development: Work on both the front-end and back-end components of mobile applications, including server-side development using Azure (or other Cloud Platforms) and MongoDB (or other relevant experience)
• Testing and Quality Assurance: Develop and execute comprehensive test plans, including unit testing, integration testing, and browser testing, to ensure the reliability and functionality of mobile applications.
• Cross-Browser Compatibility: Conduct cross-browser testing to ensure consistent functionality and appearance of web-based components.
• Documentation: Create and maintain detailed technical documentation, including code comments, API documentation, and development guides.
• Code Review and Collaboration: Collaborate with team members to conduct code reviews, provide constructive feedback, and ensure code quality and consistency.
• Performance Optimization: Identify and address performance bottlenecks in mobile applications and back-end services to optimize speed and responsiveness.
• Security and Data Protection: Implement security measures and best practices to protect user data and maintain compliance with data protection regulations.
• Scalability and Maintenance: Design systems and architectures that are scalable and maintainable as applications grow and evolve.
• Stakeholder Communication: Collaborate with cross-functional teams and effectively communicate technical concepts to non-technical stakeholders.

Qualifications:

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
• Proven 3+ years experience as a Mobile Developer with expertise in React Native for mobile application development both with iOS and Android platforms.
• Full stack development experience, including back-end development using Azure and MongoDB.
• Proficiency in front-end technologies, including HTML, CSS, and JavaScript.
• Strong testing skills, including unit testing, integration testing, and browser testing.
• Extensive experience in mobile application design and development.
• Solid understanding of cross-browser compatibility and responsive design principles.
• Thorough documentation practices and ability to create technical documentation.
• Excellent problem-solving and analytical skills.
• Strong communication and collaboration skills to work effectively in a distributed team-oriented environment.
• Commitment to security and data protection best practices.

We offer an exciting and professional environment with excellent career and growth opportunities. They provide their team members with a professional work environment with regular team outings. Their office is located in the heart of Salt Lake Sector V, Kolkata offering a terrific workspace that's both accessible and inspiring. Joining the team means becoming part of this vibrant and dynamic team where your skills will be valued, your creativity will be nurtured, and your contributions will make a difference. In this role, you can work alongside some of the brightest minds in the industry.

Onsite Office Location: Kolkata, India (Salt Lake, Sector V)

What do we need?

We are looking for a Flutter developer to join us as an intern as soon as possible. We operate through mobile and web apps. You will be one among the initial team of core developers using technology to delight customers. 

What will you do?

• Architect, design, build, deploy, and maintain scalable, reusable software 
• Help us build an awesome backend for our mobile apps
• Work on feature development, designing solutions and deployments etc

What you must have.

• Have built two or more iOS/Android apps in Flutter
• knowledge of Dart
• Experience with third-party analytics and marketing SDK’s like Firebase, and Clevertap.
• Experience with integration of Admob or Facebook Audience network experience with Git, Jenkins, or other version control tools
• Ability to write readable code, create extensive documentation for existing code, and refactor the previously written code into a readable state.
• Experience in developing Location Based Services 
• 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 
• Should be aware of platform-independent mobile application development trends/tools 

Roles & Responsibilities:

 3+ years of experience developing mobile apps.  Experiencing fine tuning applications to improve performance and memory utilization.  Thorough understanding of iOS development for iPhone, iPod Touch, and iPad devices.  Experience of design and development of iOS applications, preferably in an Enterprise setting  Proficient with Xcode, Objective-C, and Cocoa Touch  Experience with iOS frameworks such as Core Data, SQLite, MapKit, UIKit, Core Location, etc.  String knowledge in Restful, SOAP APIs to connect iOS applications to back-end services  Strong knowledge of Storyboard, Autolayout, ARC.  Experience of design and development of iOS applications, preferably in an Enterprise setting  Proficient with Xcode, Objective-C, and Cocoa Touch.  experience with iOS frameworks such as Core Data, SQLite, MapKit, UIKit, Core Location, etc  Experience with offline storage, threading, multitasking, and performance and memory tuning with  tools  (such as Instruments).  Understanding of Apple’s design principles and interface guidelines  Knowledge of low-level C-based libraries is preferred  Knowledge of Graph APIs is preferred.  Familiarity with cloud message APIs, Local and push notifications  Proficient understanding of code versioning tools (such as Git, TFS or SVN)  Familiarity with continuous integration.

Candidate Required:

 Excellent communication skills  Be an effective Team Leader and should be able to handle and lead a team with effective delegation.  Proficient in mobile app UI development and best practices  Ability to understand that business needs may shift your priorities and adjust accordingly  Exceptional written and oral communication skills.  Exceptional interpersonal skills, with a focus on listening and questioning skills.  Proven analytical and problem-solving abilities.  Ability to effectively prioritize and execute tasks in a high-pressure environment.

A Product based company is looking out for software engineers in the following categories.
If your profile matches any of the skills&experience categories and you are looking for a change,  Salary won't be a constraint for the right candidate

Category : 0 to 2 years of experience in mobile applications development for android or iOs platforms.

OS Ninja (iOS Developer)

Hello there! You’ve got 99 problems but a buggy code ain’t one? Do you have 2-5 years experience in building kickass iOS applications?

WE ARE LOOKING FOR YOU!

What will be your roles and 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.
• Contribute to the design, architecture, and development of apps that are elegant, efficient, secure, highly available, and maintainable.
• Ability to work in areas outside of your usual comfort zone and get things done quickly.

What we need

• You are proficient with Objective-C or Swift 5.0, SwiftUI, MVP, AutoLayout, UIKit, and Cocoa Touch.
• You have experience with iOS frameworks such as Core Data, Core Animation, Core Graphics, and Core Text, etc.
• You have proven hands-on experience working with table views, scroll views, delegates, notifications, NSOperations, GCD, and mainly Core Animations.
• You have good knowledge of TestFlight and XCode.
• You have an understanding of Apple’s design principles and interface guidelines.
• You have experience with performance and memory tuning with tools such as Instruments and Shark, depending on project needs.
• Knowledge of iOS networking, various design patterns, and Multithreading.
• You care about code quality and you know how to deliver high-quality code.
• You have a good understanding of code versioning tools such as Git.
• You have experience in writing functional tests experience in the usage of instruments to detect memory leaks and for performance optimization and you have familiarity with continuous integration.
• You have experience in shipping one or more iOS apps, ideally currently available on the App Store.

Job Title:Lead Mobile Developer

Work Location: Hyderabad

Experience:6 to 8 Years

Package:As Per market Standard

Notice Period:Immediate Joiners

Its a Full Time Opportunity with Our Client

Mandatory Skills:Mobile Developer,Ionic(Knowledge also fine)


Job Description:

Skills and Responsibilities
 Proficient in JavaScript / Typescript, Ionic 3-4, Angular, HTML/CSS.
 Any hybrid mobile Framework (PhoneGap, Cordova, ReactNative)
 Experience using web services (HTTP, REST, SOAP) using JSON.
 Cross-platform mobile app developers who have developed mobile apps with a familiarity of
Ionic/Flutter
 Understanding of MVC concepts, Design Patterns, User experience, Mobile Usability, Security
fundamentals
 Strong mobile UI design (multi-screen resolutions), coding, support and maintenance
 Experience with third-party libraries and APIs; Ability to handle dependencies and debugging
dependency conflicts
 Good knowledge on Data structures and Algorithms
 Experience in databases such as MongoDB/MySQL/MS SQL.
 Experience using Git/GitHub or any related source control environments in a distributed team
environment; Hands on experience Google Play/iTunes Services
 Build and publish applications in app stores
 Solid knowledge of mobile app development practices, along with mobile testing tools and
techniques
 Ability to handle Mobile app architecture, design and optimization, estimate timelines, able to
provide a solution to improve mobile app quality, understand emerging technologies, to
maximize development efficiency, standards and best practices to bring mobile app product to
the next level
 Good communication skills showing a capability to make clear and meaningful contributions to
white board design discussions and offer innovative solutions to complex problems, as well as
contribute insights from past experiences.

Experience:
 Minimum 4 years of hands on experience
 Write clean, manageable code and maintain proper documentation
 Excellent command over Data Structures and Algorithms
 Familiarity with continuous integration
 Strong problem solving and analytical skills
 Knowledge of benchmarking and optimization
 Security mindedness in development practices
 Collaborate with cross-functional teams to define, design and deliver new features
 Ability to work independently in small teams with excellent interpersonal communication skills
 Responsible and capable of meeting tight deadlines

Punchh creates the consistent, modern experiences consumers expect by bringing the power of identity resolution into physical retail. Punchh is the leader in delivering one-to-one customer engagement and loyalty beyond mobile devices for a consistent brand experience through every channel. The Punchh Loyalty and Engagement Platform, powered through artificial intelligence, guides consumers through their lifecycle from first-time customer to superfan, building meaningful relationships and dramatically increasing lifetime customer value. Nearly 200 global enterprise brands rely on Punchh to grow revenue by building customer relationships. The company is based in Silicon Valley, California with a second US office in Austin, TX and global offices across Canada, India, the United Kingdom, and Singapore.

About the role:

Punchh Tech India (Fully Owned Subsidiary of Punchh Inc., USA) is looking for creative React Native developers who think outside the box and can push the limits at times! These positions are about someone who is really passionate about creating world-class mobile apps in Android and/or iOS and has a serious app store portfolio to prove it. You will be in deep at every step of the development process and must be hands-on. Involvement from brainstorming to pushing ideas to the team and getting the apps out of the door in as little time as possible. You will also be a devil's advocate and look for flaws, suggest the remedy and motivate team members.

Job Location: Jaipur / Delhi NCR

Experience Required: Relevant 2+ years in React Native.

Skillset Required:-

• Good knowledge of JavaScript, OOPS, React- Native, mobile app lifecycle, GIT/SVN.
• Good understanding of UI/UX, app preformation, memory optimisation, delivery feasibilities, coding best practices, design principles.
• Ability to integrate existing components and make custom react - native components
• Ability to think laterally and contribute to problem-solving.
• Must be skilled and enthusiastic to explore new technologies and techniques to achieve project requirements.
• Understanding requirements and functional specifications and well versed with design programming principles.
• Knowledge of react native(RN) as a primary and knowledge of Android or iOS development as secondary skills required.

Benefits:

• Medical Coverage, to keep you and your family healthy.
• Compensation that stacks up with other tech companies in your area.
• Paid vacation days and holidays to rest and relax.
• Healthy lunch provided daily to fuel you through your work.
• Opportunities for career growth and training support, including fun team building events.
• Flexibility and a comfortable work environment for you to feel your best.