Android Developer - Kotlin

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 a rockstar Android Developer, who will be responsible for building scalable and secure Android Application

What you'll do

* Develop IoT enabled Android app using Jetpack and Kotlin for cooking robot.

* Ensure quality through independent code reviews and unit tests on modules

* Designing and developing APIs

* Optimizing existing apps' performance for speed and scalability

* Work with teams on delivering key features and performance targets

Who you are

* Have 2+ years experience building scalable android applications

* Proficiency in Python or Java

* Writes well-structured, efficient, and testable code

* Have good understanding of architecture patterns for Android

* Experience of using Jetpack is a big plus.

* Knowledge of JNI and using Native development kit.

What will you get:

* Opportunity to be a part of the founding team of a unique product made in India for the World

* Opportunity to work with a highly tech-competent team

* Tasting a lot (a lot!) of tasty robot-cooked food!

Industry

• Consumer Electronics

Employment Type

Full-time

tl;dr

🤓 An early employee of an experienced team. A lot of impact and opportunities to learn or deepen new technologies like GPT3, Amazon Rekognition, FFmpeg and more.

💰 Fixed Salary + Stock-Options

About

Blend is an AI-driven graphic design tool for entrepreneurs that removes decision making to create professional-grade product catalogs. Entrepreneurs can now create product marketing material in a few seconds to stand out and sell better online. Instead of manipulating pixels, users edit objects. Deep learning models ensure the translation of pixels into objects.

What you'll do

Blend app, an AI-driven design tool, will help its users create stunning designs within seconds.

To help us get to our vision faster, we are looking for an Engineer to join us on our app development front. This developer:

• 👩‍💻 Would work on our Flutter codebase writing cross platform code for both Android and iOS.
• 🎨 Work closely with product and design to create amazing user experiences.
• 🐜 Watch out and fix production issues, and target on running a smooth experience.
• 📈 With the help of the rest of the team, you maintain a great app with few bugs and trustable analytics: KPIs, logs, crash logs, boards.

Above all, you would be the owner of the app side of things. Drive it to success. That will be the goal.

We are tech/langugage agnostic when it comes to developers, so the only hard requirement is to be smart and passionate. That being said, having the skills below will be an advantage:

• Experience working with Flutter and/or Dart
• Experience with React/React Native (makes it easier to pick up flutter)
• Experience with Native app development (sooner or later you might get to a point where you need to write native modules as well)

How we work:

• Team: you are humble, open to challenge, and like to help others grow. The most important is the progress of the team and the product.
• Impact: you can prioritize your time to build what will give users superpowers or wow them.
• Learning: learning and sharing knowledge makes you happy. At Blend, this holds true as a team, with machine learning, and with our users.

Hiring process:

3-steps process:

• Screening call
• Technical Interview
• Cultural fit interview with the founders

Enpass Technologies Pvt. Ltd. (Gurugram) is seeking for an experienced Windows C++ GUI software developer. We have a product for securely managing the credentials across platforms through a native productivity app, GUI of which is written in Qt toolkit and we are looking for a talented, enthusiastic developer for the same.

JOB RESPONSIBILITIES:

• Design, build, and maintain efficient, reusable, and reliable Windows Qt/QML/C++ code.

• Implement performance and quality modules.

• Identify bottlenecks and bugs, and devise solutions to these problems.

• Help maintain code quality, organization, and automatization.

• Collaborate with cross- functional teams to define, design, and ship new features.

MUST HAVE SKILLS (Please do not apply if you do not fullfill this criteria):

* Desktop Applications using QT/Qml in Windows Environment

* Minimum 1 Year experience in Windows UWP development

• 4-6 yrs experience in C++11 or C++14 standerd.

• Very good knowlege of STL.

• Experience of Multithreading in ANSI C++

• Practical experience in Win32 apis.

• Basics of socket programming and inter process communication.

• Good understanding of REST apis and internet protocols in general.

• Must be able to write unit test.

GOOD TO HAVE SKILLS

* Experience with development of Qt Quick Controls 2 based applications

* Experience in software development for mobile or tablet devices

• Familiarity with Cryptography basic concepts.

• Familiarity with agile processes and development / SW quality practices such as code reviews.

• Expertise on methods and tools for CI and test automatization.

• Build distributable packages (msi or wix).

• Manage high-level architecture and design data flows in the Android and iOS app in (Dart, Flutter framework)
• Add new features and automate functionalities in backend hosted on Firebase (Typescript, ReactJS framework)
• Setup Marketing and Analytics tools in the app to get relevant daily usage insights and target users in different campaigns. (3rd party tools, Mixpanel)
• Experiment with the live data stream from wearable IoT devices to generate insights using ML models in production.
• Deploying ML models in production to be used inside the app community section.

• Experience: 2+ year of software development experience

• Tinkerer - We are a team of builders and love to get our hands dirty on new ideas and technologies. If you love to spend your time working on side-projects, you’ll fit right in.
• Problem Solver - Software development could involve a constant stream of challenges. Confidence and skill to navigate through them is an essential skill to possess.
• Team Player - At iMumz, we believe in building in a strong and small A-Team. A drive to work and contribute towards the team’s overall success and progress is desired.
• Proactive Learner - Technologies change. Frameworks get disrupted every day. Adaptability and desire to stretch to be a constant learner is highly appreciated.

• Be a part of India’s fastest-growing platform for maternal health and get hands-on experience in the growth journey of a digital product.
• Get hands-on experience of building a product for 100,000+ and growing community
• Work on building the core offerings directly with the founders.
• Freedom to work from anywhere till the work gets done.