Android 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 – Mobile App Frontend Developer

vani.coach is an award-winning high-growth product company with a mission of upskilling the communication skills of its 140 million workforce in this decade.

Trusted by large enterprises like L&T, Asian Paints, Cipla, PwC, etc. to upskill their people, Team Vani has a solid track record in delivering learning outcomes that deliver business results, leading to 100% repeat sign-ups. With a proven product-market fit, we have now switched to growth mode, and we are now building our product team.

• 3-6 years of proven and progressive experience in UI development.
• Experience in JavaScript, React Native, and GraphQL. Experience in making hybrid mobile apps. The native experience on Android and iOS will be an add-on. Clean coding and design patterns are desirable. A perfect applicant will be skilled in React Native and JavaScript.
• A grasp of database technologies like PostgreSQL, Python, etc. would be an added bonus.

What makes you a great fit?

• 3–6 years of React Native development experience.
• Experience in React Native, Javascript, and CSS3.
• Familiarity with mobile development concepts, including performance optimisation, device compatibility, and user experience design.
• Great OO skills, including strong design pattern knowledge.
• Experience in any backend is an added advantage (optional).
• Proficient understanding of code versioning tools such as Git.
• Good knowledge of client-server architecture and strong design principles.
• Solid understanding of Core JavaScript principles.
• Experience working with video/audio recording on mobile devices would be preferred.
• Working knowledge of the version control systems Git and SVN.
• Personal track record of process improvement or reengineering.
• Should be able to work independently.
• Should be able to debug the root cause of issues or bugs and their impacts.
• Strong analytical and problem-solving skills.
• Strong interpersonal, written, and verbal communication skills.

What You'll do

• Recommend the best possible way to solve a tech problem and come up with ETAs
• Able to multitask, prioritize, and take critical decisions.
• Provides input for system architectures and designs.
• Define a checklist for code reviews and unit tests.
• Ensure that functional requirements are correctly interpreted and translated into clear and robust code
• Enthusiastic to work collaboratively with people and share your ideas to solve real business problems.
• Collaborates and communicates with internal and outsourced development partners regarding software application design status, project progress, and issue resolution.
• More experienced candidates should be able to lead multiple projects with a sense of ownership.
• Strong analytical and problem-solving skills.
• Self-motivated, a team player, and the ability to work in small groups.

Educational Qualification:

B.E., MTech, BCA, MCA. Candidates holding degrees

Roles & Responsibilities: 2-3 years of Experience developing mobile apps.  Have an Experience indeveloping nativeAndroid apps(depth knowledgeof Android SDK, NDK)  Depth knowledgeof SQLite andRoom  Excellentin JAVA, Kotlin language with agooddebugging Skills  Expertin usingAndroid StudioandGit .  Developing universalapplication, which can run on most available androiddevices.  Must have good understanding ofObject-OrientedProgramming  Good eye formobileapp designand productsense  Experience in cross platformToolslike Appcelerator  Internallymotivated, abletowork proficiently both independently and in a team environment.  Good communication skills with both internal teammembers and external business stakeholders  Strong initiativeto find ways to improve solutions,systems, and processes.  Experience ofworking onAndroid Studio.  Good in data structure and Algorithms.  Very Sound knowledge of Android Components.

Candidate Required: • Excellentcommunication skills • ProficientinmobileappUI development and bestpractices • Ability to understand that business needsmay shift yourpriorities and adjustaccordingly • Exceptionalwritten and oral communicationskills. • Exceptional interpersonalskills, with a focus on listening and questioningskills. • Proven analytical and problem-solving abilities. • Ability to effectively prioritizeand execute tasksin ahigh-pressure environment

Daily Doc Technologies LLC https://dailydoc.io was conceived to innovate and bring cutting edge technology in medicine. Our mission is to make patient care more efficient, effortless and minimise medical errors. We focus on bringing useful IT solutions in medicine.

With advancements in technology, communication in healthcare can be made seamless and effortless. Lack of effective communication is one of the main causes of medical errors and unwanted outcomes. Daily Doc Healthcare App brings the technology in today's complex medical environment to give healthcare providers tools needed to have effortless, reliable and secure communication. Designed by doctors and nurses, we strive to make our platform better every day. Honesty and Integrity are our core values. We strive to innovate in healthcare to bring about positive meaningful changes in peoples lives.

Preferred Experience:

• 2+ years of experience working with mobile development.
• At least 1 to 2 years experience in Flutter Development.
• Should have knowledge about chat applications and technologies like Socket.io and Websockets are highly preferred.
• Deployed at least 3 complete apps with REST APIs linked.
• Cross-platform mobile app developers who have developed mobile apps with familiarity with Flutter
• Have experience with Flutter for both iOS and Android. Knowledge of native technologies is a bonus. • Familiarity with linking RESTful APIs.
• Knowledge of modern authorisation mechanisms, such as JSON Web Token.
• Ability to understand business requirements and translate them into technical requirements.
• Firebase Auth, Dart, Bloc, Cubit, MVC, Socket.io, Websockets, Providers, Network Callm Web Support, Offline Apps, Local Storage (or Sqflite), Google Maps API, Google Material Design are the preferred tech stack.
• Know how to deal with different screen sizes.
• Experience with version control such as Git and GitHub.
• Native android requirements like Kotlin, XML, Android Life Cycle, crash reporting tools and usage tracking tools are a bonus

Responsibilities

• Design and Build sophisticated and highly scalable apps using Flutter.
• Translate and build the designs into high quality responsive UI code.
• Write efficient queries for core Data.
• Resolve any problems existing in the system and suggest and add new features in the complete system.

• Follow the best practices while developing the app.
• Document the project and code efficiently.
• Manage the code and project on Git in order to keep in sync with other team members and managers.
• Knowledge of different state management libraries like BloC, GetX,

About the company

Founded in - 2018
Website https://dailydoc.io
Total Employes- 5

Job Types: Full-time, Permanent

Salary: ₹300,000.00 - ₹1,000,000.00 per year

Speak with the employer
96-99-56-97-85

• The main roles and responsibilities would be:
• Deliver high quality mobile apps on Android platforms.
• Create best practice, drive initiatives to build reusable frameworks, components and solutions.
• Engage with the team to create a knowledge centre on Android.
• Minimum experience of 1 years needed. Ideally more than 2 years.
• Maps based apps.
• Payment gateway integration: (PayPal, Stripe, Paytm etc).
• Integration of webservices
• Marketplace apps
• Live Streaming
• Offline application development.
• Strong OO design and programming skills in Java
• Android SDK
• JSON/REST API
• Social Media APIs
• UML/Design Pattern
• Knowledge of Retrofit,Volley,Dagger2,Realm,RxJava,Espresso
• Knowledge of android architecture component(LiveData etc).
• Working Experience on MMVM and MVP architecture
• Experience in SQL and NOSQL databases.
• Familiarity with cloud message APIs and push notifications 
• Understanding of Googles Android design principles and interface guidelines 
• Proficient understanding of code versioning tools, such as Git.
• Work closely with the leadership team to define roadmap and development plans
• Help define and implement standards and promote best practices for the Android development team
• Tackle daily challenges with your creative problem solving recommendations
• Mentor and contribute knowledge to the rest of the team and the organization
• Strong knowledge of Android UI design principles, patterns, and best practices
• Experience with threading, and performance tuning
• Ability to understand business requirements and translate them into technical requirements

Will be developing mobile and web applications using latest technology. Should be good in analysing requirements and translate into applications. Good in understanding application flows.

Tech Skills –

Mobile technology – Hybrid (Ionic / Cordova / capacitor / flutter), Native (Android / iOS) – Expert level – Should have completed 2-3 full sized complex projects with server component, use of cloud services, use of device native capabilities like camera, accelerometer etc.

HTML, CSS, Bootstrap, Java script – Intermediate level - Good understanding of concepts and should be able to realize application screens based on the UI provided by designers.

MEAN (MongoDB, Express, Angular/React, Node.js) stack – Beginner level - Should have understanding of concepts, good with basics