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

React Native Developer (Full-Time)

📍Work from Office – Malad, Mumbai

We are hiring a React Native Developer for Websites.co.in, a platform used by millions of businesses to create their websites in minutes. You will build and improve our mobile experience used by small business owners globally.

Your role:

• Build and maintain mobile apps using React Native
• Implement clean, reusable components and UI screens
• Integrate REST APIs and handle JSON data efficiently
• Work on app performance, loading speed, and smooth UX
• Debug issues, fix crashes, and improve app stability
• Collaborate with product, backend, and QA teams to ship features
• Participate in testing, code reviews, and release cycles

What we expect:

• Strong understanding of JavaScript and React Native basics
• Familiarity with navigation, state management, and component lifecycle
• Hands-on experience with APIs, third-party libraries, and async storage
• Knowledge of Git for version control
• Problem-solving mindset and ability to work independently
• Bonus: experience with Redux / Context API, Android or iOS builds, or publishing apps
• 0–3 years of experience (freshers with good projects can apply)

What you get:

• Real ownership on a live, large-scale SaaS product
• Fast-paced growth environment with hands-on learning
• Opportunity to grow into a core mobile or full-stack role

Description

We are looking for a Senior React Native Engineer to lead the architecture and delivery of high-quality, performant mobile applications. You will be responsible for defining technical foundations, enforcing engineering standards, and ensuring the mobile stack scales reliably as the product and team grow.

This role requires deep expertise in React Native internals, performance optimization, and mobile platform fundamentals, along with strong ownership and mentorship capabilities.

At Proximity, you won’t just build screens - you’ll shape the mobile architecture, set engineering standards, and mentor teams building products used at meaningful scale.

Responsibilities -

• Define and own application architecture, including navigation, state management, data flow, module boundaries, and error handling strategies.
• Establish and enforce engineering standards, including TypeScript usage, linting, formatting, testing practices, and commit conventions.
• Own the native module strategy, including Bridges, TurboModules, and JSI, while minimizing native code where possible.
• Set, monitor, and enforce performance budgets, covering TTI, bundle size, memory usage, and UI jank; conduct regular profiling and optimization.
• Design and operate CI/CD pipelines for mobile apps, including code signing, build flavors, and over-the-air updates using tools like CodePush.
• Establish strong observability practices, including crash reporting, structured logging, analytics, feature flags, and A/B experimentation.
• Lead architecture design reviews and RFCs, providing technical direction and long-term scalability guidance.
• Mentor engineers, conduct code reviews, and drive knowledge-sharing across the mobile engineering team.
• Collaborate closely with product, design, backend, and QA teams to deliver high-quality mobile experiences.

Requirements

• 5–6 years of professional experience in mobile application development, with strong expertise in React Native.
• Deep understanding of React Native architecture, rendering pipeline, and performance characteristics.
• Strong proficiency in TypeScript, modern JavaScript, and React fundamentals.
• Hands-on experience with state management solutions, navigation libraries, and modular application design.
• Proven experience working with native modules, including Bridges, TurboModules, and JSI.
• Strong understanding of mobile performance optimization, profiling tools, and debugging techniques on iOS and Android.
• Experience setting up and maintaining mobile CI/CD pipelines, including build automation and release workflows.
• Solid understanding of app distribution, code signing, build variants, and OTA update mechanisms.
• Ability to take ownership of features and systems from design through production.
• Strong communication skills and experience working in cross-functional teams.

Desired Skills -

• Experience with CodePush or similar OTA update solutions.
• Familiarity with mobile analytics, experimentation frameworks, and feature flag systems.
• Exposure to monorepo setups and shared codebases across web and mobile.
• Experience contributing to or maintaining internal mobile libraries or design systems.
• Understanding of Agile development methodologies and iterative delivery.

Benefits

• Best in class compensation: We hire only the best, and we pay accordingly.
• Proximity Talks: Learn from experienced engineers, designers, and product leaders across the organization.
• Work with a world-class team: Build scalable mobile products, push technical boundaries, and learn something new every day.

About us -

We are Proximity — a global team of coders, designers, product managers, geeks, and experts. We solve complex problems and build cutting-edge technology at scale.

Our team of Proxonauts is growing quickly, which means your impact on the company’s success will be significant. You’ll work with experienced leaders who have built and led high-performing tech, product, and design teams.

Here’s a quick guide to getting to know us better:

• Watch our CEO, Hardik Jagda, tell you all about Proximity.
• Read about Proximity’s values and meet some of our Proxonauts.
• Explore our website, blog, and design wing — Studio Proximity.
• Get behind the scenes with us on Instagram — follow @ProxWrks and @H.Jagda.

iOS Developer

Hiring for the position of iOS Developer responsible for developing app from scratch.

Role

●        Translate design and wireframes into code

●        Design, build, and maintain high performance, reusable, and reliable code

●        Identify solutions through research and collaboration that resolves the root of problems as they arise

●        Unit testing code

●        Experience with cloud message APIs and usage of push notifications

Requirement

∙  2+ years’ strong development experience in iOS

∙  Experience using RESTful web services within mobile applications

∙ Proficient with Swift and Cocoa Touch

∙ Knowledge of iOS UI/UX standards

∙ Understanding of Apple’s design principles and interface guidelines

∙ Experience with code versioning control, such as bitbucket/git

Education: Engineering

Responsibilities:

• Lead the development team and ensure projects are completed smoothly and on schedule.
• Stay ahead of the game by finding and using new technologies to boost the business.
• Work hand in hand with the crore team to figure out their needs and keep our products on point with the market trends.
• Keep our products high quality, scalable and secure.
• Develop and maintain a detailed project plan to track progress and ensure that projects are completed on time and within budget.
• Brainstorm and plan the company's tech strategy with the CTO and other important leaders.
• Keep up to date with the latest tech trends and find new growth opportunities.
• Give the development team technical guidance and be a mentor to them.

Requirements:

• Bachelors or Masters's degree in Computer Science, Software Engineering or a related field.
• 8+ Years of experience leading software development teams with a track record of delivering complex products.
• Technical know-how and experience with the latest software development tech.
• Proven experience in identifying and implementing new technologies to drive business results.
• Experience handling challenges and taking advantage of the opportunities that come with working in a startup environment.
• Ace leadership, communication and teamwork skills.
• Self-starter with loads of drive and a desire to make things happen.
• Understand the Mobile development Landscape, especially Android and IOS.
• Hands-on experience with API-based development.

Requirements:

• Design and develop scalable IONIC applications using open source technologies.
• Develop a hybrid application with IONIC, cordova.
• Experience in HTML5 CSS, JQuery and Javascript.
• Experience in hosting application on Appstore.
• Work as part of an agile team on leading edge technologies.
• PHP & Apache stack with JavaScript, JQuery.
• Responsive Web design with HTML5 CSS3 Bootstrap.
• Social media APIs and third party widgets integration.
• Web services Integration - JavaScript and XML (Ajax), Representational state transfer (REST), Javascript Object Notation (JSON).
• End to End Role - Analyze Design, Develop, Deploy, Monitor, Enhance
• Experience on database systems.

Roles & Responsibilities:

• Building smooth UIs and designing responsive screens across both mobile platforms.
• Leveraging native APIs for deep integrations with both platforms.
• Diagnosing and fixing bugs and performance bottlenecks.
• Reaching out to the open source communities to encourage and help implement mission - critical software fixes (React Native updates frequently and dependent libraries might break).
• Maintaining code and writing automated tests to ensure the product is of the highest quality. 

Skills Required:  

• Familiarity with native build tools, like XCode, Gradle
• Understanding of REST APIs and offline storage
• Experience with unit testing and integration testing
• Experience with Cl/CD and version control (i.e., GitHub) highly valued 
• Bachelor's degree in computer science, computer engineering, or similar
• Strong communication skills: you possess the ability to communicate complex problems in a simple and effective way
• Have worked in an agile and fast-paced environment (ideally at an e - commerce or logistics company)
• Ready to join the team immediately