iOS 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 Title: iOS Developer

Location: Noida Sector 63

Experience - 1+ Years

About the Role:

We are seeking a talented and motivated iOS Developer with 2+ years of experience to join our growing mobile development team. In this role, you will be responsible for designing, developing, and maintaining high-quality iOS applications that deliver an exceptional user experience.

Qualifications:

B.Tech in Information Technology or Computer Science, or

M.Tech in Information Technology or Computer Science, or

MCA (Master of Computer Applications).

Key Skills & Experience:

Proven experience in Swift and Java programming.

Strong hands-on knowledge of SwiftUI, UIKit, and Apple’s core frameworks.

Proficiency with Xcode IDE and iOS app architecture.

Experience integrating and working with Firebase services.

Good understanding and implementation of MapKit.

Strong background in integrating third-party dependencies, libraries, and SDKs

Solid problem-solving and debugging skills.

Familiarity with RESTful API integration and mobile app design best practices.

Experience with the entire App Store submission process is a plus.

Responsibilities:

Design and develop robust, scalable, and reusable iOS applications.

Collaborate closely with designers, product managers, and other developers to deliver high-quality features on schedule.

Write clean, maintainable, and efficient code following industry best practices.

Perform unit and UI testing to ensure application performance, quality, and responsiveness.

Identify and correct bottlenecks, fix bugs, and continuously discover, evaluate, and implement new technologies to maximize development efficiency.

Integrate and manage third-party libraries and dependencies as needed.

Ensure the performance, quality, and responsiveness of applications across various iOS devices.

Participate in code reviews and contribute to team knowledge sharing.

What We’re Looking For:

A proactive, self-motivated developer with strong analytical and problem-solving skills.

A team player with excellent communication and collaboration abilities.

A passion for staying up-to-date with new trends and advancements in iOS development.

A commitment to delivering high-quality, user-centric products.

As part of the Mobile SDK Engineering team at MoEngage, here are some things you can expect:

• Take ownership and be responsible for what you build.
• Work with A players (some of the best talents in the country), and expedite your learning curve and career growth.
• Make in India and build for the world at a scale of 900M+ active users, which no other internet company in the country has seen.
• Learn together from different teams on how they scale to millions of users and billions of messages.
• Work with the customer success team to enable MoEngage customers to adopt Insights-led engagement in different industry sectors like e-Commerce, FinTech, OTT, Social, entertainment, travel, telco, food-tech etc.
• Explore the latest in topics like Mobile development, SDK, iOS, tvOS, various mobile hybrid frameworks and share with the team. More importantly, have fun while you work on scaling MoEngage.

Skills Required

• 6+ years of experience with iOS, Swift, ObjC, Xcode and Cocoa.
• Working knowledge of architecture principles, code organization, and system design.
• Informed and up to date with iOS SDK and ecosystem.
• In-depth knowledge and understanding of the iOS framework:
• Memory Management
• Caching and Persistent data storage
• Multithreading concepts
• Rest APIs Implementation
• Dependency Managers
• Understands the internals of the mobile builds and distribution processes.
• Great communication skills and an ability to work within a team and with cross-functional teams.
• Experience with code reviews, releasing and maintaining mobile applications/SDKs.

Good to Have:

• Knowledge of other cross-platform frameworks i.e, Flutter, React-Native, Cordova, Unity.
• Experience in working and shipping SDKs/plugins.

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.

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 Swift {depending on project requirements}, and Cocoa Touch
• Experience with iOS frameworks such as Core Data, Core Animation, etc.
• Experience with offline storage, threading, and performance tuning
• 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
• Experience with performance and memory tuning with tools {such as Instruments and Shark, depending on project needs}
• Familiarity with cloud message APIs and push notifications
• The knack for benchmarking and optimization
• Proficient understanding of code versioning tools {such as Git, Mercurial or SVN}
• Familiarity with continuous integration

Qualification: –

Education Qualification: B. TECH / BCA / M. TECH / MCA.

React Native Job Description

• Work as part of a small team to build React Native iOS / Android applications for clients.
• Architect, build, and maintain excellent React Native applications with clean code.
• Implement pixel-perfect UI's that match designs.
• Implement clean, modern, smooth animations and transitions that provide an excellent user experience.
• Integrate third-party APIs.
• Write unit and integration tests.
• Release applications to the Apple and Google Play stores.
• Work with native modules when required.
• Work as part of a small team of a software developers.
• Complete weekly sprints, and participate in sprint retrospectives and daily standups.
• Assist with building estimates.
• Work with modern tools including Jira, Slack, GitHub, Google Docs, etc.
• Be part of a community of React Native developers who share knowledge and help each other as problems arise.
• Follow the software development process.

Requirements

• 2+ years of professional experience working with React Native.
• 4+ years of professional software development experience.
• Experience working with Swift, Objective C, and Java a plus but not required.
• Meaningful experience working on large, complex systems.
• Ability to take extreme ownership over your work. Every day is a challenge to ensure you are performing to the expectations you and your team have agreed upon, both in regards to estimates and to the general process.
• Ability to identify with the goals of clients and dedicate yourself to delivering on the commitments you and your team make to them.
• An understanding of React Native best practices and a commitment to following them.
• Ability to work through new and difficult React Native issues and contribute to libraries as needed.
• Ability to create and maintain continuous integration and delivery of React Native applications.
• A positive mindset and can-do attitude.
• A passion for software development. It’s not just your career, it’s also your hobby. You’re constantly striving to learn new things and improve. You follow industry news, regularly tinker with new technologies, and read books and blogs to keep your skills current.
• You work well within a team environment and enjoy working in the office with your colleagues.

Benefits

We pay top salaries with lucrative esops options.

Opportunity to work and learn with very mature, helpful and highly motivated techies.

Our environment is vibrant and full of energy. We are looking for like-minded people who love to “code” and have passion in building great software.

Flexible timings.

Quarterly parties

Rewards and Recognitions

Unlimited Leaves

Flexibility to work remotely

Flexibility to work from Gurgaon or Bangalore Office

Half yearly review cycle

React Native Lead. We want you to have a chat with the candidates whether they are good on these points and do they have the experience as per mentioned in JD. It will be beneficial for us to filter out profiles for RN Lead.

Job Description / what you'll be doing

• Leading the team to build cutting edge React Native applications.
• Architects build and maintain excellent applications with clean code.
• Implement pixel-perfect UI's that match designs. Knowledge of scalable sizing of UI is a must.
• Implement clean, modern, smooth animations and transitions that provide an excellent user experience.
• Integrate third-party APIs.
• Write unit and integration test cases.
• Release applications to IOS and Google Play stores.
• Must understand iOS and Android native code which can be used to write bridges.
• Can work in pod structure. 
• Must be comfortable in the SCRUM process. Complete two-week sprints and participate in sprint retrospectives and daily standups.
• Assist with building estimates and pipeline for tasks rollout.
• Good communication and people skillset.
• Work with modern tools including Jira, Slack, GitHub, Firebase, GTM, Google play console, AppStore Connect, etc.
• Be part of a community of developers who share knowledge and help each other as problems arise.
• Ability to work through new and difficult issues and contribute to libraries as needed.
• Ability to create and maintain continuous integration and delivery of applications.
• Must be familiar with profiling and performance monitoring of the application.
• Ability to achieve stretch goals in a highly innovative and fast-paced environment

Requirements

• 6+ years of professional experience working with Mobile application development and 2-4+ years of experience with React Native development.
• Experience working with Swift / ObjectiveC, Java / Kotlin required.
• Should have a crystal understanding of App architecture and how to React interacts with the native layers for iOS and Android respectively
• Excellent JavaScript Developer has a deep understanding of scope and closures, ES6, Object prototypes, Async, Hooks, Functional components, and Performance
• Excellent Code reviewer and champion at writing unit test cases
• Should be able to evaluate alternative multiple system designs and solutions and make data-backed decisions in his/her approach
• Meaningful experience working on large, complex systems.
• Ability to take over your work. Every day is a challenge to ensure you are performing to the expectations you and your team have agreed upon, both in regards to estimates and to the general process. extreme ownership
• An understanding of best practices and a commitment to following them.
• A positive mindset and can-do attitude.
• Forensic attention to detail.
• Mentoring, onboarding, and interviewing the candidate
• Experience mentoring junior software engineers to improve their skills and make them more effective product software engineers
• Experience influencing software engineers- best practices within your team
• Passion to design and develop intuitive user interface
• Sound business judgment, proven ability to influence others, and strong analytical thinking skills
• You work well within a team environment and enjoy working in the office with your colleagues.