React Native 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.

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 applications. Android programming works closely with other app development and technical teams.
Responsibilities

• Design and build advanced applications for the Android platform
• Collaborate with cross-functional teams to define, design, and ship new features
• Work with outside data sources and APIs
• 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

Rejolut is one of the award winning fastest growing emerging tech company which is working on leading technology like Blockchian, ML & AI, Complex mobile & web apps, IoT etc.

The ideal candidate will be responsible for developing highly scalable and secure code.

Responsibilities:-
-Able to take the Extreme Ownership of modules/product/projects
-Able to learn & implement new technology/framework/library at God Speed
-Able to come with optimal solution for the business problem
-Can handle calls with the client & customer to know their feedback
-Writing clean code & able to dig into other's code or open source code
-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.
-Maintain code and write automated tests to ensure the product is of the highest quality.
-Transition existing native apps to Flutter

Desired Candidate Profile:-

-Strong knowledge & experience in Dart is mandatory.
-Strong attention to detail in UX & interactions.
-Strong experience with Flex CSS styling.
-Strong experience in SQLfLite & Firebase messaging is required.
-Experience in releasing Android and iOS App store

Culture

- Fast-paced, intellectually stimulating, steep learning, and growth

- Close-knit, hardworking, supportive colleagues

- Challenging work

- Flat organization with no hierarchy

- If you like problem solving, and love latest technology, there are very few better places

How we are different 
 -We are young and dynamic team who are obsessed with solving business problem at scale -We are a technology agnostic company who focus more on finding the optimal solution to business problem rather than technology

 Why to join us
 -We provide huge learning curve. Spending 1.5-2 years with us will put you 3 years ahead in the career
-We work only on cutting edge technology like React, React Native, Flutter, NodeJS, Python, Go, Svelte, ELM
-There are two technology Co-founder in the company ho are pretty much hands-on and have earlier bult the Consumer application which is downloaded millions of time and are in leadership position in copanies like Samsung, Purplle, Loylty Rewardz
-Get mentored by the best in the industry
-Flexible working hours
-Perks best in the industry

Rejolut is one of the award winning fastest growing emerging tech company which is working on leading technology like Blockchian, ML & AI, Complex mobile & web apps, IoT etc.

The ideal candidate will be responsible for developing highly scalable and secure code.

Responsibilities:-
-Able to take the Extreme Ownership of modules/product/projects
-Able to learn & implement new technology/framework/library at God Speed
-Able to come with optimal solution for the business problem
-Can handle calls with the client & customer to know their feedback
-Writing clean code & able to dig into other's code or open source code.
-Build pixel-perfect, buttery smooth UIs across both mobile platforms.
-Leverage native APIs for deep integrations with both platforms.

Desired Candidate Profile:-

• Firm grasp of the JavaScript (and TypeScript or ClojureScript) language and its nuances, including ES6+ syntax
• Knowledge of (functional or 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, IntelliJ)
• Understanding of REST APIs, the document request model, and offline storage
• Transition existing apps to React Native and work with native modules when required.
• Experience in releasing Android and iOS App store
• Experience working with Swift, Objective C, and Java a plus but not required

How we are different 
 -We are young and dynamic team who are obsessed with solving business problem at scale -We are a technology agnostic company who focus more on finding the optimal solution to business problem rather than technology

 Why to join us
 -We provide huge learning curve. Spending 1.5-2 years with us will put you 3 years ahead in the career
-We work only on cutting edge technology like React, React Native, Flutter, NodeJS, Python, Go, Svelte, ELM
-There are two technology Co-founder in the company ho are pretty much hands-on and have earlier bult the Consumer application which is downloaded millions of time and are in leadership position in copanies like Samsung, Purplle, Loylty Rewardz
-Get mentored by the best in the industry
-Flexible working hours
-Perks best in the industry

-Flat structure, no hierarchy

This person MUST have:

• BE Computer Science, MCA or equivalent
• Mobile app development experience.
• Good understanding of the full mobile development life cycle,strong debugging and problem-solving skills.
• Unit-test code for robustness, including edge cases, usability, and general reliability.
• Strong React Native experience
• Understanding of APIs, pagination,searching,sorting
• Creating high performance UI etc.
• Familiarity with native build tools, like XCode, Android Studio, Gradle.
• Leverage native APIsfor deep integrations with both platforms.
• Strong communication skills.

Experience:

• Min 3 year experience
• Not more than 15 year experience.

Tatsam is a stealth mode, venture-backed mental healthcare company based in India.
We're redesigning mental health and wellness experiences for the modern day working professional, have raised angel round from top-tier investors, and signed some of the largest Indian enterprises and startups for the upcoming private beta launch… and we’re just getting started.

The startup is led by a team of CXOs who are serial entrepreneurs (YC alumni, IIT alumni, CXO in large enterprises). They are supported by a team of behavioral design experts, clinicians and counsellors with vast experience, and technologists on a mission to improve mental health and wellbeing for the modern day working professional.

RESPONSIBILITIES:

• Developing app using Flutter for both Android & iOS platforms.
• Writing quality code independently that is simple, reliable, and scalable.
• Evaluating and implementing out-of-the-box ideas for application development.
• Working with the team to manage, optimize, and customize multiple applications.
• Detecting and troubleshooting application issues.

REQUIREMENTS:

• Must have 2+ years of experience in native mobile development (Android / iOS).
• Must have 1+ years of experience in Flutter.Should have worked and successfully deployed apps using Flutter framework.
• Good knowledge of Flutter SDK & Dart programming language.
• Should have worked on mobile platforms like Android or iOS.
• Should have developed & worked with Flutter widgets for iOS & AndroidExperience with any of the state management solutions like Bloc, Provider, Mobx, etc.
• Mobile app architecture design and optimization.Extreme attention to detail and the ability to match the design as closely as possible.
• Ability to work closely with Product Managers, other development team members.
• Understanding of Functional Reactive Programming is a must.
• Comfortable with Test-Driven Development.

The Opportunity
You will enter a close group of exceptionally talented people who in the last 2-months have secured incredible investors, partners, clients and advocates. We will continue this momentum till our vision of being able to provide good mental health and wellbeing avenues for the modern day professionals is achieved. If we like each other and agree to partner in this journey, this has the potential of resulting in a compounded career and mental growth for you.

Kiko is looking for an experienced React Native developer to join our Engineering team. You will be working with our engineers to develop and maintain high quality mobile applications.

If you're passionate about mobile platforms and translating code into user-friendly apps, we would like to meet you.

As a Mobile developer, you'll collaborate with internal teams to develop functional mobile applications, while working

in a fast-paced environment. Ultimately, you should be able to design and build the next generation of our mobile

applications platform.

Responsibilities

1. Work as part of a small team to build React Native iOS / Android applications.

2. Architect, build and maintain excellent React Native applications with clean code.

3. Technical design of complex mobile applications.

4. Implement pixel perfect UI's that match designs.

5. Implement clean, modern, smooth animations and transitions that provide an excellent user experience.

6. Integrate third-party API's.

7. Write unit and integration tests.

8. Release applications to IOS and Google Play stores.

9. Work with native modules when required.

10. Ensuring the best performance and user experience of the application

11. Guiding team members for design and implementation tasks.

12. Co-ordinating end-to-end implementation.

13. Cooperating with back-end developers, designers, and the rest of the team to deliver well-architected and highquality solutions.

Desired Candidate Profile

1. 3+ years of professional experience working with React Native- Preferred

2. 3-6 years of professional software development experience

3. Meaningful experience working on large, complex systems.

4. Demonstrable portfolio of released applications on the App store and the Android market.

5. Ability to take extreme ownership over your and team’s work.

6. An understanding of React Native best practices and a commitment to following them

7. Ability to work through new and difficult React Native issues and contribute to libraries as needed

8. Ability to create and maintain continuous integration and delivery of React Native applications

9. A positive mindset and can-do attitude

10. Forensic attention to detail

11. Good hands-on experience in GIT

Company Introduction

Edfone is an educational technology company, which creates smart tools for schools and colleges. This position is for a global project where your work will create an impact on students across the globe. Being one of the early in-house team members you will get to enjoy interacting with founding team and working with early customers - students and teachers. And as always, you will be eligible for a fair share of startup benefits. If you are someone who loves to write mouth watering code and is game to for an exciting ride to help students across the world learn better, do see if you have the skills we need and apply.

Job Description

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.

Responsibilities

• 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
• Maintain code and write automated tests to ensure the product is of the highest quality.
• Transition ownership of existing React Native apps from out sourced developers to in-house

Skills

• Firm grasp of the JavaScript, React Native and its nuances
• Knowledge of functional or 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
• Understanding of REST APIs, the document request model, and offline storage
• Experience with automated testing suites, like Jest or Mocha

• Support the entire application lifecycle (concept, design, test, release and support)
• Produce fully functional mobile applications writing clean code
• Gather specific requirements and suggest solutions
• Write unit and UI tests to identify malfunctions
• Troubleshoot and debug to optimize performance
• Design interfaces to improve user experience
• Liaise with Product development team to plan new features
• Ensure new and legacy applications meet quality standards
• Research and suggest new mobile products, applications and protocols
• Stay up-to-date with new technology trends