Mobile Application Developer

 iOS Developer (SwiftUI)

Location: Indore / Chennai

Experience: 4 – 7 Years

Joining: Immediate Joiners Preferred

Note- Good communication preferred

Key Responsibilities:

• Design and develop iOS applications using Swift & SwiftUI
• Collaborate with cross-functional teams to define, design, and ship new features
• Ensure performance, quality, and responsiveness of applications
• Integrate APIs and third-party libraries

Required Skills:

• Strong experience in Swift & SwiftUI
• Solid understanding of iOS frameworks (UIKit, Combine, etc.)
• Experience with REST APIs and JSON
• Knowledge of MVVM / MVC architecture

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.

iOS developer Experienced

Job Summary :-

We are looking for an Experienced iOS developer who has good knowledge of mobile application development, maintenance and, bug fixing.

Your primary focus will be the development of iOS applications.

Responsibilities and duties:-

·        Proficient with x code tool and swift programming language

·        Basic Knowledge of Swift language.

·        Knowledge about Storyboard, auto layout.

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

·        Familiarity with cloud message APIs and push notifications.

·        Knowledge of the latest trends and technologies and the ability to use them in the apps.

·        Design and build advanced applications for the iOS platform.

·        Experience In Third-party libraries and APIs

·        Ability to understand business requirements and translate them into technical requirements

·        Collaborate with cross-functional teams to define, design, and ship new features

·        Proficient understanding of code versioning tools, such as Github.

·        Good Analytical and Problem solving Skills.

Key Skills:-

Java, Oops Concepts,Strong in IOS Development with swift or objective c.

Experience:- 1Year – 2Year

Required Experience and Qualifications:-

BE IT/ BE COMP/ MSC IT/ Diploma / BCA/ MCA

Salary:- 15k to 25k

What does the core role include?

• Designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance
• Designing stateless components in React Native
• Contributing in all phases of the development lifecycle
• Working with the developers to create and maintain a robust framework to support the apps
• Working with the developers to build the interface with a focus on usability features

What else can you expect in the role?

• Prepare and produce releases of software components
• Optimizing performance for the apps
• Problem-solving skills, analytical mind, and positive attitude
• Ability to think from end users perspective and focused on improving the overall product experience.
• Deliver across the entire app life cycle concept, design, build, deploy, test, release to app stores and support

What can fetch you brownie points?

• Hands on experience with React Native is required
• Hands-on experience in React Native APIs, ReactJS, Javascript, ECMAScript (OOJS) and JSX.
• Strong understanding of JavaScript ecosystem
• Hands on experience on Android in creating Hybrid / Native applications
• Demonstrable UI/UX experience on a large-scale app.
• Thorough understanding of React Native development tools like IDEs (Nuclide, Atom, Sublime Text, or Visual
• Good knowledge of JS frameworks like ReactJS is a plus.
• Desired Skills and Experience
• Hybrid Apps,React Native, Native iOS and Android Architecture understanding

Job Role : Software Developer (Android)
Job Location : Delhi
Note: As of now WFH
Experience Required : 3+ years’ experience
Qualification: B. Tech CS / IT from tier 3 above

Job Description

We are looking for a results-driven Android Developer who will work with team members to build, troubleshoot and improve current Android applications. The Android Developer will use his or her understanding of programming languages and tools to analyze current codes and industry developments, formulate more efficient processes, solve problems, and create a more seamless experience for users. You should have excellent communication, computer, and project management skills.

To succeed as an Android Developer, you should be focused on building a better, more efficient program and creating a better end-user experience. You should be knowledgeable, collaborative, and motivated.

Responsibilities

• Designing layout and developing applications for Android that are compatible with multiple screen resolutions and different versions of OS.
• Complete ownership of problem-free execution of owned modules and solutions.
• Focus on code optimization, code quality, maintainability etc.
• Debug and Optimise Android applications to work on multiple Android versions and devices.
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency.

Skills And Qualifications

• 2-4 years of experience in development of Android apps-Android Studio, kotlin, JAVA environment, GIT.
• Exposure to Product Development.
• Ability to understand business requirements and translate them into technical requirements.
• In depth Understanding of Android recommended design principles, interface guidelines and best practices for coding.
• Should have understanding of software development life-cycle.
• Experience with performance and memory tuning of complex Apps. 
•  Hands on experience in Multi-threaded programming, and good knowledge of networking concepts.
• Experience with AB testing, Analytics, offline syncing, GCMs, deep-linking, notifications etc.  

Design patterns: MVVM

Platform: Android Kotlin

IOS: Swift

• As an independent, self-motivated, and an avid technologist, you should have a strong interest in mobile and intuition for UX and consumer behaviour
• Up to date knowledge of Android (Jetpack and RxPatterns)
• Experienced in publishing and maintaining apps in play store
• Excellent Java programming skills
• Experienced in writing testable code & unit tests
• Experience with the Kotlin programming language a plus
• 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
• Familiarity with the use of additional sensors, such as gyroscopes, accelerometers, GPS
• 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 (JETPack, Rx patterns)
• Proficient understanding of code versioning tools, such as Git
• Familiarity with continuous integration

We are looking for a React Native developer interested in building performant mobile apps on both the iOS and Android platforms. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

Requirements 

- You will be working with our engineers to develop and maintain high-quality mobile applications for both platforms as Android and iOS.

- Ultimately, you should be able to design and build the next generation of our mobile applications.

Job Responsibilities and Required Skills :

- Experience with React Js, React Native, JavaScript including DOM Manipulation and the JavaScript object model.

- Thorough understanding of React Native and its core Principles.

- Hands-on experience on React Native Framework at least 3 years.

- Good Knowledge of HTML5, CSS.

- Familiarity with code versioning tools (Such as Git, SVN or Mercurial)

- Familiarity with RESTful APIs

- Familiarity with modern front-end build pipelines and tools.

- Experience with common front-end development tools such as Babel, Web pack, NPM etc.

- Experience with Native Mobile app deployment on App store and google play store.

• Leads a project end-to-end and collaborates across functions. Drives planning, estimation and execution.
• Understands requirements well and comes up with efficient design
• Develops complex, well backed and bug-free products. Estimates accurately.
• Takes well-reasoned tech decisions keeping in mind goals and trade-offs
• Becomes a go-to person in more than one area. Provide technical mentoring to team
• Communicates clearly, gets clarifications and establishes expectations for all parties
• Helps establish SDLC best practices and high standards of code quality
• Demonstrates excellent problem solving & debugging skills
• Proactively identifies and resolves issues in requirements, design and code
• Perform peer code reviews and help us all get better.

Tech Stack :

    SWIFT, CORE DATA, CORE ANIMATION, CFNETWORK, UIKIT, MVVM, MVC FRAMEWORK.

Responsibilities:

• Design, Develop and Deploy 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
• 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
• Bug fixing and improving application performance

Requirements:

• 2+ years of experience in iOS & hands-on exp in Swift.
• This position requires creative ability, detail-orientation, quick problem-solving skills, excellent interpersonal and communication skills.
• Proven software development experience and IOS skills development.
• Proven working experience in IOS app development and Have published at least one original IOS app.
• Experience with Agile development methodology (preferably Scrum), continuous integration and tools (GIT, JIRA etc.)
• Strong Experience with Swift, Cocoa Touch, iOS, and iPhone/iPad applications.
• Proficiency in iOS application development using swift.
• Experience with iOS frameworks such as Core Data, Core Animation, CFNetwork, UIKit etc.
• In-depth Understanding of Apples recommended design principles, interface guidelines.
• Must know about MVVM, also have experience in MVC Architecture.
• Good knowledge of Data Structures.Hands-on experience of development of iOS native app.
• 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.
• Familiarity with cloud message APIs and push notification.
• Must have experience with performance and memory tuning of complex Apps.
• Must have designed custom UIs apart from what Apple provides.
• UI development with Interface Builder and Code.
• Understanding of startup culture.
• Good team player, Quick learner.