
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.

About Big Rattle Technologies
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Experience: 8–15 Years
Job Summary
We are seeking a highly skilled Senior Android Developer with extensive experience in building robust, scalable, and high-performance mobile applications. The ideal candidate will have deep expertise in Android development using Java and Kotlin, strong problem-solving abilities, and a passion for delivering high-quality user experiences.
Key Responsibilities
- Design, develop, and maintain advanced Android applications for mobile devices.
- Collaborate with cross-functional teams to define, design, and ship new features.
- Integrate mobile applications with backend systems using RESTful APIs.
- Ensure the performance, quality, and responsiveness of applications.
- Identify and fix bugs, optimize performance, and improve application scalability.
- Write clean, maintainable, and efficient code following best practices.
- Participate in code reviews and mentor junior developers.
- Stay updated with the latest trends and technologies in Android development.
Required Qualifications & Experience
- Bachelor’s degree in Computer Science, Engineering, or a related technical field.
- 8+ years of experience in Android development using Java and Kotlin.
- Minimum 4 years of hands-on experience with Kotlin.
Technical Skills
- Strong understanding of the Android platform and Android SDK across multiple OS versions.
- Proficiency in consuming RESTful web services and API integration.
- Solid knowledge of Android UI/UX principles, design patterns, and best practices.
- Experience with popular Android libraries and open-source frameworks.
- Hands-on experience with build tools such as Gradle or Maven.
Testing & Quality Assurance
- Experience with testing frameworks such as JUnit, Espresso, or Robolectric.
- Familiarity with Test-Driven Development (TDD) or Behavior-Driven Development (BDD).
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Performance & Optimization
- Experience in handling local data storage solutions.
- Strong understanding of multithreading and performance tuning.
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Tools & Technologies
- Version control systems such as Git.
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Soft Skills
- Strong communication and interpersonal skills.
- Ability to work effectively in distributed/global teams.
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- Comfortable in fast-paced and dynamic environments.
Job Description
The primary role of this position will be to develop rich Mobile applications for a highly accessed and commercial digital content platform based on a high-performance CE device. We are looking for resources with Android and iOS technology skills for user facing application development using TypeScript and JavaScript FW competency. Your primary focus will be on developing application components and implementing them following well-known mobile development workflows.
Responsibilities:
- As an individual contributor understand the requirements, perform detailed design and coding, debugging, testing and release of the given modules.
- Development of new user-facing features using Mobile technologies, re-usable components and front-end libraries.
- Rapid development ability to build and demonstrate quick Mobile driven solutions.
- Work closely within a small team of experienced engineers to produce high-quality software products on a daring schedule.
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- Write unit test and perform functional verification for the responsible modules
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Skills:
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- Good knowledge of HTML5 and CSS
- Experience with modern front-end build pipelines and tools such as Babel, Webpack, NPM, etc.
- Agile Scrum based Development
- Ability to communicate effectively and make effective Presentations
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- Familiarity with code versioning tools such as Git, SVN.
Qualifications:
- Bachelor’s Degree in computer science or related field, and Minimum of 3 years of experience in commercial software development.
- Expertise in object-oriented design methodologies
- Experience working with medium to large scale code bases in small to large groups
- A passion for front end application development
Desirable:
- Timely and committed: Being able to work in a time constrained and demanding environment
- One who likes to push beyond own goals and makes way through challenges!
- Quality-driven, quick learner who is also a team player, can work independently without supervision

Minimum 2 years of working experience.
Can work on live projects of international clients.
Can handle multiple projects
Error-free coding.
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Objective-C, or increasingly, the Swift 3.0 programming language
Apples Xcode IDE
Frameworks and APIs like Foundation, UIKit, and CocoaTouch
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Apple Human Interface Guidelines
2D and 3D graphics frameworks like SpriteKit and SceneKit
OpenGL or Metal, iOS graphics APIs
Familiarity with iOS 10 and newer OS versions
A Git code repository technology
Strong Objective-C skills and inside-and-out knowledge of the iOS SDK.
Experience using and creating scalable web-based Restful APIs.
Proficiency in the standard Android tech stack - JAVA/Kotlin
Good knowledge of design patterns, MVVM, Dependency Injection and more
Restful API, JSON Parsing, Retrofit Network Libraries
Strong knowledge of Android UI design principles, patterns, and best practices
Experience with offline storage, threading, and performance tuning
Excellent Android technical issue diagnosis and problem solving skills
GOOD TO HAVE
Hilt
Coroutine
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An emerging Social Media Aggregator is looking to hire iOS developers with 2-4 Years of experience.
Preferrably those who can join within 30 days can apply.
Requirements
- Proficient with Objective-C, Swift, and Cocoa Touch.
- Strong familiarity with Xcode
- Experience with object-oriented design and programming concepts
- Must have knowledge of MVC, MVP design patterns.
- Excellent skills in debugging, problem-solving, source code analysis, and coding
- Ability to work effectively as an individual and within the team
- Experience with offline storage, threading, and performance tuning
- Familiarity with RESTful APIs to connect Desktop applications to back-end services
- Understanding of Apple's design principles and interface guidelines
- Experience with performance and memory tuning with tools
- Proficient understanding of code versioning tools -GIT
Salary will not be a constraint for the right employee
● Build new features & align them with product-requirements
● Build new features & gamification experience throughout the application
● Ensure the best possible performance, quality, and responsiveness of the application
● Identify and correct bottlenecks and fix bugs
● Help maintain code quality, organization, and automatization
- Build pixel-perfect UIs across Android and iOS mobile platforms.
- Leverage native APIs for deep integrations with both platforms.
- Diagnose and fix bugs and performance bottlenecks for performance that feels native.
- Developing and releasing complex, data-driven apps using React Native as the primary application framework.
- Proficiency writing Modern JavaScript, including ES6+, and JSX.
- Maintain code and write automated tests to ensure the product is of the highest quality.
- Must be able to develop high-performance cross-platform apps using React-Native.
KeepTruckin is on a mission to modernize the trucking industry. With the leading fleet management platform, we are bringing trucks online and fundamentally changing the way freight is moved on our roads.We see our hard work rewarded in tangible ways every day and we believe that intelligence is most powerful when paired with humility. We're motivated by the opportunity to impact and improve every facet of a trillion-dollar industry that touches everyone's lives. KeepTruckin is proud to be a Forbes Cloud 100 company, a 2020 Career-Launching Company by Wealthfront and named a Forbes Best Startup Employer 2020.
About the Role:
As one of our first mobile engineers in Bangalore, this is a great opportunity to make a significant impact in designing and building our new KeepTruckin Fleet Manager iOS app and as well as grow by working directly with experienced technology professionals with backgrounds from Silicon Valley companies like Google, Twitter, Facebook and Uber (to name a few). We are looking for candidates who have a familiarity with Objective-C and Swift, and a good understanding of system architectures (mvc, mvvm, redux) and a forward thinking mindset aimed at high readability (declarative) code, as well as identifying problems or bottlenecks before they become issues.
What You'll Do:
Develop from scratch our new iOS KeepTruckin Fleet Manager AppWork with product team to refine feature specs, and work with cross functional teams like IoT, Embedded, Data Science/ML, Computer Vision & Motion teams to create fluid user experiences with interactive visualization for a multitude of data from these different teamsCommunicate with backend engineers about API requirements or refinements, and engage with the senior engineers for mentorship to learn & grow in your areas of interest. Analyze our user's data to identify bugs, and help support team to diagnose user problems Be able to work as part of a small, tightly knit team
What We're Looking For:
2-4 years of experience working on iOS apps. Proficiency in Objective-C, Swift, Storyboards, XIBs, and programmatic view layouts and transitionsAn understanding of Apple UI/UX and application design paradigmsAn appreciation and understanding of automated app testing. Knowledge or interest in commercial vehicles/trucking is a plus!Creating a diverse and inclusive workplace is one of KeepTruckin's core values.
We are an equal opportunity employer and welcome people of different backgrounds, experiences, abilities and perspectives.Please review our Candidate Privacy Notice here.
Software Engineer, React Native.
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Empala is an exciting new fintech launching in Singapore. Empala aims to help workers in the SEA region get access to their pay & helping them save for unexpected expenses.
Job Description:
As fullstack developer at Empala you will be building and shaping our product. Our current offerings are centered around a React Native app (iOS & Android) with a serverless backend.
Empala is a flat and young organization, meaning every hand has a lasting impact on our product and our culture. You will report directly to the CTO and will in general be working closely with the founders. The job is of course mostly focused on building and maintaining our products, but in a small team you will have to wear a lot of hats, you could get involved in sales, marketing or anything in between, ideally you will see this as a positive thing and a chance to learn more about our users/customers/new areas of work.
Benefits:
At Empala we offer a competitive package that will be a mix of salary and employee stock options. We pay ourselves on demand meaning you can get paid for the work you have done when you wish it, be it daily, weekly, monthly or a combination of above.
Requirements:
The following requirements are a guideline, if you are missing some points but you are confident that you can master them in a reasonable amount of time there might still be a place for you at Empala.
Preferred
- React Native
- Backend tools and frameworks (express or any other, non JS is OK as well)
- Cloud providers, AWS preferred
- Git
Other requirements
- Fluent in english
- Proactive approach to problem solving
- A hunger to get stuff done
Nice to have:
- Experience with Redux, GraphQL, Typescript, AWS Amplify
- Experience with SCRUM and/or TDD







