Mobile 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.

Responsibilities:

● Design and build advanced applications for the Android platform

● Collaborate with cross-team (developers, designers, product owners, QA) to define,

design, and ship new features.

● Prepare test plans, and test cases and execute/automate them.

● Write and review unit-test code for robustness, including edge cases, usability, and

general reliability

● Problem solve and determine out-of-the-box solutions for complex technical

requirements

● Work with fellow programmers, as well as the rest of the production team, as a lead

programmer and manager.

● Must have very strong problem-solving and analytical skills.

● Application of experience and knowledge to optimise game engine deployment for

virtual reality VR in terms of memory, frame rate and performance.

● Work with emerging technologies to create new tools and systems for interactive

real-time production.

● Ensure compliance with ride requirements, including performance benchmarks and

integration with third-party ride control systems.

● Produce clean, well-documented code and maintain internal engine builds, using

Perforce and other tools to distribute builds to the team.

● End-to-End mobile development life cycle from planning to publishing

Requirements:

● B.Tech/B.E degree in Computer Science, Engineering or a related subject

● Proven software development experience and Android skills development

● Proven working experience in Android app development and have published at least

one original Android app

● Experience with Android SDK

● 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

● Experienced in handling both legacy code and greenfield development and can make

technical recommendations based on the needs of the project

● Solid understanding of the full mobile development life cycle.

● Expert-level understanding of object-oriented programming, threading/concurrency,

unit testing, and modern architectural design

● Excellent source control discipline and are comfortable using git flow

● Experience in 3D engine development experience within the games industry is a plus

● Hands-on with Jetpack compose is a plus.

● Scrum, agile process and adherence

● Good project management skills are a plus

● Strong expertise in Kotlin and Java

● Knowledge of Swift and Fuller is a plus

Mobile Application Developer

Cubera is a data company revolutionizing big data analytics and Adtech through data share value principles wherein the users entrust their data to us. We refine the art of understanding, processing, extracting, and evaluating the data that is entrusted to us. We are a gateway for brands to increase their lead efficiency as the world moves towards web3.

The ideal candidate will be responsible for the technical design and implementation of new products and enhancements. They will work in all phases of the development cycle: concept to implementation.

Responsibilities

3+ yrs of experience in Cross Platform React-Native based app development.

Hands-On Experience of Android and IOS Cross Platform Development.

Should be well-versed with Mobile Application Architecture, React/React Native Life Cycle and Redux.

Good Command on Javascript Coding, CSS3 and HTML5 and ES6 Standards.

Basic Understanding of Graphic Design and UX Design.

Good understanding of OOP, design patterns, and industry best practices.

Self-motivated to explore new technologies, applications, and environments.

Hands-on Experience with Node JS and MongoDB is good to have.

Share ownership of the sprint, define task backlog and development process.

Reach out to the open-source community to encourage and help implement mission-critical software fixes—React Native moves fast and often breaks things.

Leverage native APIs as necessary for deep integrations with both platforms.

Write, document, and maintain code and automated tests to ensure the product is of the highest quality.

Develop and maintain build process with CI/CD tools for automated builds.

Qualifications

Bachelor’s degree or equivalent in Computer Science.

3+ years’ experience in related area.

Experience with iOS and Android platforms.

Job Category: Development

Job Type: Full Time

Job Location: Bangalore

Experience: 3-5 Years Experience

Skills:

Javascript, Node JS, HTML, CSS, Advanced JS

Location : Ahmedabad only 

NO  WORK FROM HOME 

ONLY  WORK FROM OFFICE 

Role Description for the 3 month internship:-

• Create multi-platform apps for iOS & Android using Google's new Flutter development framework
• Strong OO design and programming skills in DART and SDK Framework for building Android as well as iOS Apps.
• Good expertise in Auto Layout and adding constraints programmatically
• Must have experience of Memory management, caching mechanisms., Threading and Performance tuning.
• Familiarity with RESTful APIs to connect Android & iOS applications to back-end services
• Experience with third-party libraries and APIs
• Collaborate with the team of product managers, developers, to define, design, & deploy new features & functionality
• Build software that ensures the best possible usability, performance, quality, & responsiveness of features
• Work in a team following agile development practices (Scrum)
• Proficient understanding of code versioning tools such as Git, Mercurial, or SVN, and Project Management tool (JIRA)
• Utilize your knowledge of the general mobile landscape, architectures, trends, & emerging technologies
• Get Solid understanding of full mobile development life cycle and make use of the same
• Help Develop and Deploy Good Quality UI
• Solid understanding of the full mobile development life cycle.
• Good written, verbal, organizational and interpersonal skills
• Unit-test code for robustness, including edge cases, usability, and general reliability.
• Excellent debugging and optimization skills
• Strong design, development and debugging skills.

Job Title: Android Developer

Experience: 2 yrs to 6 yrs

Notice Period: upto 15 days

Location: Chennai

Job Description :

• Strong knowledge of Android SDK, different versions of Android, and how to deal with different screen sizes
• Strong knowledge of Android UI design principles, architectural patterns, and best practices
• Strong Knowledge in integrating  Android apps with back-end applications through RESTful web services
• Experience with offline storage, threading, and performance tuning
• Experience in app release management and publishing
• Familiarity with cloud message APIs and push notifications using FCM
• Familiarity with the use of additional sensors, such as gyroscopes and accelerometers
• Knowledge of the open-source Android ecosystem and the libraries
• Ability to understand business requirements and translate them into technical documents
• Understanding of Google’s Android design principles and interface guidelines

Scope of Work:

• Understand the Requirement
• Create wireframes / UI
• App development & testing
• Release Management & Publishing apps
• Following Coding best practices

Job Summary

We are looking for an iOS developer responsible for the development and maintenance of applications aimed at a range of iOS devices including mobile phones and tablet computers. Your primary focus will be development of iOS applications and their integration with back-end 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 the creation of quality products is essential.

Roles & 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 Required

• Proficient with Objective-C or Swift 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)
• Familiarity with cloud message APIs and push notifications
• Knack for benchmarking and optimization
• Proficient understanding of code versioning tools (such as Git, Mercurial or SVN)
• Familiarity with continuous integration.
• Experience working with storyboard, cocoa touch and auto layout.
• Working knowledge of the general mobile orientation, architecture, trends and emerging technologies.
• Must have good analytical, debugging and problem-solving skills.