
- Responsible for design, develop, and implement new ideas and products from scratch.
- You will be interfacing with the server-side engineering team to scale out our apps across thousands of users.
- You will be involved in all aspects of development playing a critical role in the design, planning, development, and submission of our iOS apps.
- Manage and deliver across the entire app life cycle, design, build, deploy, test, release to app stores, and support.
- Working directly with developers and product managers to conceptualize, build, test, and realize products/features.
- Optimizing performance for the app and keeping it up to date with the latest industry standards.
- Continuously discover, evaluate, and implement new technologies to maximize development efficiency.
QUALIFICATION:
- Good understanding of Swift, Cocoa framework, Core Data, AutoLayout, UIKit, Xcode & iOS applications.
- Proven hands on experience working with table views, scroll views, delegates, notifications, NS operations, GCD.
- Extensive mobile development experience with iOS Proficiency in Swift.
- More than one application developed end to end for iPhone.
- Experience in writing unit and functional tests.
- Experience in usage of Instruments to detect memory leaks and for performance optimisation.
- Solid understanding of memory management with and without ARC.
- Knowledge of iOS networking and Multithreading.
- Strong sense of good Application UI Design.
- In depth understanding of Apple recommended guidelines and best practices for coding.
- Knowledge of software development best practices including continuous integration, development of high quality code, reusable toolkits and libraries.
- Understanding of prevailing architecture/technology concept.
- Knowledge about Git.
- Able to fit in well within an informal environment.
- High energy level and untiring commitment to drive oneself & the team towards goals.

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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.

- Design and build highly reliable and performant applications that deliver a great user
experience.
- Own large technical deliverables and execute in a structured manner.
- Take the accountability of the overall health of the applications you build.
- Platformize components as libraries, utilities and promote reuse.
- Be able to conceptualize and develop prototypes quickly.
- Lead by example, mentor and guide team members on everything from structured
problem solving to development of best practices.
What we are looking for:
- Deep expertise of the iOS and Android ecosystems.
- Hands-on experience with either React Native, Flutter, Swift or Kotlin.
- Deep understanding of your tools: Languages, frameworks, systems.
- Experience with abstracting requirements into frameworks.
- Hungry to learn, share knowledge, and enjoy mentoring others.
- Data driven, having customer empathy, striving to build stable, delightful
applications.
- [Optional, but desired] Experience with video streaming and Real Time
Communication technologies
Requirements:
• Minimum 3 years of experience in React Native.
• Integration of Rest APIs in react native.
• Firm grasp of the JavaScript and Typescript language and its nuances, including ES6+ syntax
• Knowledge of functional and object-oriented programming
• Ability to write well-documented, clean JavaScript code
• Rock solid at working with third-party dependencies and debugging dependency conflicts
• Familiarity with native build tools, like XCode, Gradle, Android studio and IntelliJ
• Proficient understanding of releasing and monitoring apps on IOS App store, Play store.
• Should be able to communicate to backend developers on API building and modifications needed.
• Testing and releasing builds Experience in application testing software’s Appium is preferable.
• Understanding of REST APIs, the document request model, and offline storage
• Experience with automated testing suites, like Jest or Mocha
• Experience with handling production mobile apps.
• Experience with performance testing and optimization.
Responsibilities:
You’ll
• 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.
• Build pixel-perfect, buttery-smooth UIs across both mobile platforms.
• Leverage native APIs for deep integrations with both platforms.
• Diagnose and fix bugs and performance bottlenecks for performance that feels native.
• Reach out to the open-source community to encourage and help implement mission-critical software fixes—React Native moves fast and often breaks things.
• Maintain code and write automated tests to ensure the product is of the highest quality.
• Transition existing React web apps to React Native.
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.
- Full-stack developer with extensive knowledge of software development and agile methodologies, building native applications using JavaScript, and a portfolio of apps already published in-app store or self-hosted.
- Minimum 2-3 years experience working on Flutter projects/products.
- Good to have Healthcare domain experience.
- Ability to clearly understand requirements and translate them to software.
- Review business requirements, identify gaps, and assist in authoring functional design documents.
- Analytical mind with problem-solving aptitude.
- Proactive and self-starter requiring minimal supervision, who can collaborate with multiple stakeholders in the company.
- Good to have or awareness of Artificial Intelligence and Machine Learning algorithms and Python framework.
- Proficiency in relational databases like SQL Server and Oracle.
- Knowledge of cloud technologies (AWS, Azure, Google cloud), container, and virtualization will be a big plus.
- Familiarity with Continuous integration (Jenkins/Hudson), automated testing, and version control (GitHub, SVN).
- Knowledge of 3 rd party libraries and APIs, modern frameworks and design patterns, and test automation tools for Unit and Performance testing.
- Awareness of secure coding practices and standards. Page 2 of 3 Above all, you should love to build and ship products that real people use every day!
Roles and responsibilities:
- An ideal candidate will exhibit the following traits:
- Adapt and work on distributed technology stacks.
- Work with BAs to define or elaborate business software requirements.
- Design and build responsive and usable interface (UI/UX) for mobile applications through appealing, visual design.
- Take ownership of product features and work closely with stakeholders to ideate and rapidly release minimum viable product or mobile app solutions across healthcare products.
- Extensive experience with SDLC phases including Agile methodologies.
- Assist in designing client-side and server-side architecture.
- Perform code reviews, validation, and verification testing.
- Knows the use of version control software (GIT).
- Document technical design and unit test plans.
- Must have experience in working with multiple & small teams.
- Evaluate security and regulatory requirements.
- Proactively communicate in providing status reports and report blockers.
- Debug code, solve incidents and defects.
- Develop well-managed, high-quality, scalable, and reusable code.
- Should have excellent English (both verbal and written) skills.
- Should have excellent interaction and client communication skills.
- Solve technical challenges and take pride in their solutions and code.
Advantageous
- Java/Swift experience
- Understanding of Android Keyboard API
- Experience with optimizing applications for better performance and response
• Take our iOS app to the next level
• Implement an amazing UI while working closely with the designers
• Automate unit testing for each and every part of the app
• Optimize the app for various form-factors (iPhone, iPad)
• Helping in hiring the future Imarticus Learning team
Experience
0-2 years
Good to Have Skills
• Deep knowledge of Swift and Objective C
• Familiarity with Apple's design principle
• Familiarity with release process on Apple's App Store
• Passionate about mobile, and good knowledge of upcoming trends in mobile space
Education Background
• BE/B-TECH/BS in Computer Science or related technical field or equivalent practical experience.
• Atleast 1 cool app already live on Apple's App Store
• Programming experience in Swift/Objective-C
• Experience in mobile application development (iOS)
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







