11+ IntelliJ IDEA Jobs in Mumbai | IntelliJ IDEA Job openings in Mumbai

We are looking for a Senior React Native Mobile App 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.

• 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- React Native moves fast and often breaks things
• Maintain code and write automated tests to ensure the product is of the highest quality
• Transition existing React web apps to React Native

• Firm grasp of the JavaScript and TypeScript or ClojureScript language and its nuances, including ES6+ syntax
• Knowledge of 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
• Experiences with automated testing suites, like Jest or Mocha

Responsibilities

1. Cross-Platform Mobile Development

• Build, maintain, and scale production-grade React Native applications for both Android and iOS platforms from a single codebase.
• Translate product requirements and UX designs into clean, modular, and reusable React Native components.
• Develop rich, intuitive user interfaces for AI/ML dashboards, real-time analytics, and consumer-facing applications.
• Own features end-to-end — from technical design through to deployment on Play Store and App Store.

2. Native Integration & Bridging

• Write custom native modules and bridges in Kotlin/Java (Android) or Swift/Objective-C (iOS) to extend React Native's capabilities where required.
• Integrate third-party SDKs, device hardware APIs, and platform-specific features seamlessly into the React Native layer.
• Ensure consistent functionality and behaviour across a wide range of Android and iOS devices and OS versions.

3. Real-Time & Data-Driven UI

• Build real-time UI components that handle live data streams, WebSocket connections, and high-frequency data updates with minimal latency.
• Develop data-intensive views including charts, dashboards, and monitoring interfaces optimised for mobile performance.
• Ensure smooth, responsive user experiences under high-traffic and data-heavy conditions.

4. Performance & Optimization

• Profile, debug, and optimize application performance using tools such as Flipper, Hermes, React DevTools, and platform-native profilers.
• Minimize app bundle size, reduce render cycles, and improve startup time through best-in-class optimization techniques.
• Ensure accessibility compliance and cross-device UI consistency across varying screen sizes and resolutions.

5. Architecture & Code Quality

• Design and implement scalable mobile architectures supporting modularity, testability, and long-term maintainability.
• Implement robust state management using Redux, Zustand, MobX, or React Context depending on application complexity.
• Establish and uphold mobile coding standards, component libraries, and reusable design systems across the team.

6. Collaboration & Delivery

• Partner closely with backend, AI/ML, data engineering, and design teams to integrate APIs, data pipelines, and workflows.
• Actively participate in code reviews, sprint ceremonies, and technical design discussions.
• Support CI/CD pipelines using Fastlane, Bitrise, or equivalent tools for automated builds and releases.
• Contribute to OTA update strategies using CodePush or equivalent.

Required Skills & Qualifications

• Strong hands-on experience building and shipping production React Native applications on both Android and iOS.
• Proficiency in JavaScript and TypeScript — TypeScript strongly preferred.
• Experience with state management libraries — Redux, Zustand, MobX, or Context API.
• Solid understanding of React Native architecture — Bridge, JSI, Hermes engine, and the New Architecture (Fabric/TurboModules) is a plus.
• Experience writing native modules or bridges in either Kotlin/Java or Swift/Objective-C.
• Hands-on experience with REST APIs, GraphQL, and WebSockets in a mobile context.
• Strong understanding of mobile UI/UX principles, responsive design, and platform-specific design guidelines (Material Design & HIG).
• Experience with CI/CD pipelines and app store deployment processes.

Preferred Skills

• Experience building data-intensive or dashboard-heavy mobile applications.
• Familiarity with data visualization libraries such as Victory Native, Recharts, or D3.js for mobile.
• Exposure to AR/VR or graphics-intensive mobile experiences (ARKit, ARCore, React Native Vision Camera).
• Experience with OTA updates via CodePush or similar tools.
• Familiarity with monorepo setups (Nx, Turborepo) for managing shared mobile codebases.
• Understanding of accessibility standards (WCAG) and inclusive design on mobile.
• Exposure to AI/ML integration on mobile — on-device inference, TensorFlow Lite, or CoreML.

About the company

WonDRx (pronounced as Wonder-Rx) - spearheaded by two serial Entrepreneurs Mr. Pankaj Sindhu along with his Co-Founder Mr. Pankaj Agrawal; is a very unique and novel technology which has the capacity to change the way healthcare eco-system interacts with each-other. We are determined to change the way of Healthcare domain working and make it more convenient while ensuring a pleasant experience for the consumers and all other stakeholders involved. You need to see the product to believe the power it has and what it can enable in the healthcare domain.

1

React Native Fresher – Job Description

Job Summary:

We are seeking a React Native Fresher to join our team and assist with the development of our mobile

applications. The successful candidate will work closely with our experienced developers to gain valuable

hands-on experience while building mobile applications using React Native. This is a great opportunity for

someone who is passionate about mobile app development and wants to grow their skills in this area.

Responsibilities:

 Work closely with the development team to design, develop and maintain mobile applications

using React Native.

 Write clean and efficient code while adhering to coding standards and best practices.

 Collaborate with cross-functional teams to identify and solve complex software problems.

 Participate in code reviews and contribute to improving the quality of the codebase.

 Stay up-to-date with new technologies, techniques, and best practices in mobile app

development.

 Provide feedback and suggestions for improving the user experience of our mobile applications.

 Complete assigned tasks on time and meet project deadlines.

Requirements:

 Must be enrolled in or recently graduated from a Computer Science, Software Engineering, or

related program.

 Strong understanding of JavaScript and React Native.

 Familiarity with Agile software development methodologies.

 Knowledge of software development principles, design patterns, and best practices.

 Ability to write clean, efficient, and well-documented code.

 Good analytical and problem-solving skills.

 Excellent communication and teamwork skills.

Preferred qualifications:

 Experience with iOS and/or Android app development.

 Familiarity with Redux and related libraries.

 Understanding of RESTful API design and development.

 Experience with Git and related version control tools.

 Familiarity with Continuous Integration/Continuous Deployment (CI/CD) pipelines.

 Interest in mobile app development trends and emerging technologies.

Working Conditions:

 This is a full-time internship with a duration of 3 to 6 months.

 Work will be on-site.

Job description:

Company Overview

Teknobuilt is an innovative construction technology company accelerating Digital and AI platforms to help all aspects of program management and execution for workflow automation, collaborative manual tasks and siloed systems. Our platform has received innovation awards and grants in Canada, UK and S. Korea and we are at the frontiers of solving key challenges in the built environment and digital health, safety and quality.

Teknobuilt vision is helping the world build better- safely, smartly and sustainably. We are on a mission to modernize construction by bringing Digitally Integrated Project Execution System - PACE and expert services for midsize to large construction and infrastructure projects. PACE is an end-to- end digital solution that helps in Real Time Project Execution, Health and Safety, Quality and Field management for greater visibility and cost savings. PACE enables digital workflows, remote working, and AI based analytics to bring speed, flow and surety in project delivery. Our platform has received recognition globally for innovation and we are experiencing a period of significant growth for our solutions.

Job Responsibilities

As a Mobile App Developer, you will need to:

• Flutter: To build cross-platform mobile apps for Android, IOS. This should include making responsive UIs to efficiently query data and also manage states in an optimised manner.
• Native Android and IOS: To build custom Flutter Packages.
• Firebase: Should have experience with Cloud Fire Database, Push Notifications, Cloud Functions and Analytics.
• Adobe XD: Should know how to use Adobe XD to use the design file and use it to build the app.
• Git: To manage and collaborate in different projects with the rest of the team.
• Design and build sophisticated and highly scalable apps using Flutter.
• Build custom packages in Flutter using the functionalities and APIs already available in native Android and IOS.
• SQLite: Understanding of persisting data with the SQLite database.
• Experienced in working with remote data via REST and JSON.
• Use CI/CD for smooth deployment.
• Must have built at least one Android, iOS, apps with Flutter or Hybrid Framework.

Qualification

Bachelor’s degree in computer science, IT or related fields

Key skills for Mobile App Developer

- Experience: 2 – 3 Years Flutter Developer, Android & IOS,

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

- Work with outside data sources and APIs.

- Worked on Dart.js

- 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 maximise development efficiency

- Good understanding of databases.

Salary Range: Competitive

Employment Type: Full Time (Night-shift work may be required depending on project needs)

Location: Mumbai / Navi Mumbai

We appreciate your interest in Teknobuilt

Job Type: Full-time

Work Location: In person

We are looking for a Senior React Native developer with 5 - 6 years of experience, in building performant mobile applications on Android & iOS platforms. You will be responsible to Architect, build React Native applications.

We are a fast growing product based startup operating out of Chennai.

Responsibilities

• Build pixel-perfect, buttery smooth UIs across Android and iOS.
• Technical design of complex mobile applications
• Leverage native APIs for deep integrations with both platforms.
• Translating designs and wire-frames into high quality code
• 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.

Requirements

• 5-6 years of demonstrable experience in designing and developing mobile apps using react-native.
• 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 and Visual Studio Code.
• Understanding of REST APIs, the document request model, and offline storage.

Below are a few perks of joining our team:

• Competitive salary
• Fully remote job
• Creative Problem Solving and Entrepreneurial Thinking
• Fast-Paced Environment
• Consistent Engagement from Senior Leadership

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

About CoutLoot : 

- CoutLoot is India's leading social commerce offline to an online platform that lets anyone sell online in 30 seconds! We're on a mission to empower offline sellers to sell online using the CoutLoot app and sell their products to buyers all over the country.

- CoutLoot is a Series A funded company backed by leading Chinese VCs, Artha India Ventures, Venture Catalysts & others.

Job Description : We are looking for dynamic, open-minded self-starters who enjoy Business Leadership roles and would like to build a Category in an extremely fast-growing e-commerce company impacting millions of Indians.

Job Requirements :

- At least 2 years of experience working with iOS and has published at least one app to the App Store.

- Excellent proficiency in Swift and has experience working with Objective-C.

- Should have good knowledge of object-oriented software engineering.

- Should be able to deal with Objective-C in legacy code.

- Decent knowledge of protocol-oriented programming in Swift.

- Experience working with constraint-based layouts using AutoLayout.

- Should have a good eye for detail and have good skills in implementing clean UI and UX.

- Experience with testing frameworks and writing clean, testable code.

- Experience with client/server architectures using HTTP, REST APIs, etc.

- Must have excellent knowledge of Foundation framework, Core Data, etc.

- Experience with third-party libraries and APIs.

- Experience working with various architecture patterns like VIPER, MVVM, etc as well with clean code principles.

- Must be a team player with good communication skills and experience mentoring junior engineers.