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 Description

Position Summary:

We are looking for a Mobile application developer responsible for the development and maintenance of applications aimed towards iOS, including mobile phones and tablets. Your primary focus will be the development of such applications and their integration with other 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 creating quality products is essential. You will be responsible for the product development with quality and by following the engineering practices. The candidate should be a team player who should be able to code, do the peer code review, defect fixes wherever needed on the existing product.

Responsibilities:

 Design and build applications for iOS

 Ensure the performance, quality, and responsiveness of applications

 Collaborate with a team to define, design, and ship new features

 Innovative thinking for problems solutions. Solid implementation

 Identify and correct bottlenecks and fix bugs

 Achieving Code, module delivery dates within time

 Help maintain code quality, organization, automatization, and documentation

 Uses Agile Scrum Methodology for software development

 Develops unit tests for all new code

 Has all code changes peer reviewed and must peer review code when required

 Provides input for documentation of new or existing programs

 Well versed with usage of debugging tools to analyze and solve complex problems independently

 Diagnose and resolve complex level issues of application

 Participate in interactions with all levels of personnel with different teams Skills:

 Proficient in all versions of Swift, with a good knowledge of its ecosystems

 Solid understanding of object-oriented programming

 Experience in App Store distribution process and Enterprise distribution of Apple

 Good knowledge of performance limits and characteristics

 Knowledge of memory management and multi-threading, background thread handling and iOS file systems

 Knowledge of private framework in swift and objective C languages

 Experience with embedded databases and other system datastores

 Experience of automated testing platforms and unit tests for Mobile applications

 Familiarity with RESTful APIs to connect to back-end services

 Good sense of UI design and a user-oriented focus  Knack for benchmarking and optimization  Proficient understanding of code versioning tools e.g. Git

 Hands on experience in using Jenkins

 Familiarity with continuous integration

 Good Knowledge in design patterns

 Excellent interpersonal and written communication skills in English

 Good time management skills

 Certification of iOS development, swift language will be value added  Experience with Cocoa APIs on iOS and Apple frameworks AR, ML and swift UI is good to have

 2-4 years of work experience in Mobile application development.

Pay/compensation: Benefits: Health Insurance (including for Parents); Personal Accident Cover.

### Responsibilities:

* Collaborative Development:

 - Work closely with Product, UX/UI, and Backend teams to design, build and extend consumer facing products, platforms, and features.

* Reusable Components:

 - Develop reusable iOS software components for our platform, ensuring modularity and maintainability.

* Continuous Integration and Delivery:

 - Collaborate with QA to implement CI/CD pipelines for automated and manual testing, ensuring app releases maintain high standards.

* Performance Monitoring:

 - Monitor the performance of live apps, continuously improving code quality and user experience.

* Innovation and Evaluation:

 - Stay updated with new mobile methodologies and technologies, evaluating their potential integration into our development process.

### Requirements:

* Proven Experience:

 - Demonstrated experience in developing mobile applications, specifically on the iOS platform using Swift.

* Modern Development Practices:

 - Up-to-date knowledge of modern iOS programming paradigms and experience with native app development.

* API and SDK Expertise:

 - Experience in API design, SDK architecture, and the mobile software lifecycle development practices.

* UX/UI Design:

 - Strong exposure to UX/UI design with experience in creating intuitive apps with pixel-perfect interfaces.

* Computer Science Fundamentals:

 - Solid understanding of algorithms and data structures.

* Methodologies:

 - Familiarity with SDLC and Agile methodologies.

* Startup Experience:

 - Prior experience working in a startup environment is a plus.

Job Description:

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 application, Android programming works closely with other app development and technical teams.

Join our company if you are willing to work with us and need to learn good technology and healthy work culture.

If you have the desire to be a part of an exciting, challenging and rapidly-growing software development company, and if you are passionate about software development and creating the finest apps in the marketplace.

Freshers with an attitude to learning are welcome to apply.

Roles & responsibilities

Development and maintenance of Android applications

Monitoring app performance and taking necessary steps to fix the bugs in the applications

Documenting version history and changelog for mobile applications

Doing research and coming up with new ideas for app development

Requirements:

• Strong knowledge of Android SDK, different versions of Android, and how to deal with different screen sizes.
• 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.
• Ability to design applications around natural user interfaces, such as touch.
• 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.
• Proficient understanding of code versioning tools.
• Must know about java, Kotlin, MVC, MVVM, Firebase, SQLite, and payment gateways.

Sr Android Developer - Job Description About The Role CapitalNow is seeking an Android Developer with notable experience in Java and Kotlin development. The technical team is responsible for developing the supported mobile application and web app for customers and a control panel for the marketing team involved in CapitalNow. You will be responsible for delivering best in a class mobile experience, engineering-complex, secure & high-quality native Android mobile apps for our product.

Responsibilities ● Collaborate efficiently across cross-functional teams such as product managers, UX-/UI-designers, and other software engineers ● Design, build and maintain high-performance reusable, and reliable code ● Continually improve and innovate software development, deployment and testing to ensure high-quality, on-time releases. Conduct and participate in code-reviews ● Provide UAT support & needed assistance for release management activities ● Serve as a leader for team members to learn from regarding mobile technologies, development, and delivery processes

Essential Qualifications ● At least 5 years of experience in Android Kotlin/Java development ● Excellent understanding of Objective Oriented design patterns, Android fundamentals, and Android SDK (versions 5.0 and up) ○ Experience with offline persistence, threading, memory management, and performance tuning ○ Data structure optimizations, security, IPC, App Modularization ○ 3+yrs of Experience in integrating third-party SDKs like Facebook, Gmail/Google, and Payment gateways like CCAvenue, PayU, Razorpay, etc ○ Including Android Architecture Components, Navigation Framework, Android Jetpack, Android NDK, View components, JSON, and more ● Familiarity with RESTful APIs to connect Android applications to back-end services ● Published at least two original Android apps ● Knowledge of Google Playstore Policies and experience in handling all types of permissions in Playstore ● Strong analytical, communication, and interpersonal skills Desired Qualifications ● Having experience working in the Financial Services domain (good if it's in capital markets) is an added advantage ● Familiarity with Unit Testing ● Hands-on experience as a Senior Android developer is a plus ● Having experience in writing complex queries using MySQL is an added advantage ● Immediate joiner is most preferable

• 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
• Identifying potential problems and resolving application bottlenecks.
• Fixing application bugs before the final release.
• Publishing application on App Store.
• Maintaining the code and atomization of the application.
• Designing and implementing application updates.

• Proficient with Swift, Xcode, and Cocoa Touch.
• 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
• Familiarity with cloud message APIs and push notifications

Job Description

An iOS developer is responsible for developing applications for mobile devices powered by Apple’s

iOS operating system. They must also have a strong understanding of the patterns and practices

that revolve around the iOS platform.

Responsibilities

1. Design and build advanced applications for the iOS platform

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

3. Unit-test code for robustness, including edge cases, usability, and general reliability.

4. Work on bug fixing and improving application performance.

5. Continuously discover, evaluate, and implement new technologies to maximize development efficiency.

Skills & Qualifications

1. Experience working with iOS frameworks such as Cocoa Touch, Firebase, Alamofire

2. Degree in Computer Science, Engineering or a related subject

3. Proven working experience in software development

4. Working experience in iOS development

5. Have published one or more iOS apps in the app store

6. Must have knowledge of Swift & Objective C

7. Experience with third-party libraries and APIs

8. Working knowledge of the general mobile landscape, architectures, trends, and emerging technologies

9. Solid understanding of the full mobile development life cycle.

Experience Requirement

We are looking for the candidates with 3+ years of experience

Design and Build iOS product and Platform

• IOS coding using Objective C and Swift Ensuring quality deliverables, fixing application defects, maintaining code and implementing application updates.
• Designing coding, Documenting design, Defect free deliverables.
• Ensure the performance, quality, and responsiveness of application.