React Native Developer

Senior Mobile App Developer (Android & iOS)

Location: Brookefield, Bangalore — Onsite

Engagement: Full-Time

Experience: 3+ Years

Job Description

We are seeking a highly skilled Senior Mobile App Developer/Consultant with strong hands-on experience in building, deploying, and maintaining mobile applications for both Android and iOS, with React Native as the primary development framework.

The ideal candidate must be proficient with React Native, Android Studio, Xcode, and the end-to-end iOS App Store deployment process. This is an onsite, full-time role suitable for professionals who can take ownership and deliver high-quality product-based mobile applications. Experience in product companies or the banking/fintech domain is a strong advantage.

Primary Tech Stack (Mandatory)

React Native (Primary Framework)

Android Studio (Java/Kotlin)

Xcode (Swift/Objective-C)

RESTful APIs & Integration Patterns

App Store & Play Store Deployment Processes

Key Responsibilities

Design, develop, and maintain mobile applications using React Native for both Android and iOS.

Work with native modules when required using Swift/Objective-C and Java/Kotlin.

Build and release iOS apps to the Apple App Store, including managing certificates and provisioning profiles.

Debug, troubleshoot, and enhance mobile applications.

Optimize app performance, stability, and responsiveness.

Collaborate with product, backend, and QA teams for smooth development workflows.

Apply best practices in UI/UX, security, and mobile architecture.

Prepare documentation and provide technical guidance as needed.

Required Skills & Qualifications

3+ years of hands-on mobile development experience.

Mandatory: Strong proficiency in React Native.

Hands-on experience with Android Studio and Xcode.

Expertise in Swift, Objective-C, Kotlin, or Java.

Proven experience in building and publishing iOS apps to the App Store.

Strong understanding of RESTful API integrations.

Good knowledge of mobile UI/UX principles.

Strong debugging and problem-solving abilities.

Ability to work independently and deliver within timelines.

Nice to Have

Experience with Flutter or native-only app development.

Product-based company experience.

Exposure to Banking / FinTech systems.

Understanding of App Store Optimization (ASO).

Work Details

Location: Brookefield, Bangalore (Onsite)

Working Days: Monday to Saturday (Alternate Saturdays Off)

Timings: 9:00 AM – 6:00 PM

Responsibilities:

• Writing clean and efficient codes for Android applications
• Identifying and resolving bottlenecks, rectifying bugs and enhancing application performance.
• Collaborating with cross-functional teams to define and design new feature.
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency.
• Ability to brainstorm and come up with solutions to open ended problems.
• Ability to take ownership and drive initiatives end to end.
• Desire to learn and dive deep into new technologies on the job.
• Solid understanding of CS fundamentals-Operating Systems, Databases and Data Structure.

Knowledge and Skills:

• Prior experience as an Android Developer using Java, Kotlin, Android SDK, Android NDK
• Proficient understanding of code versioning tools such as Git
• Familiarity with RESTful APIs to effectively integrate Android applications
• Solid understanding of the full mobile development life cycle.
• Passion for products and aspiration to make a big impact.
• Solid engineering principles and clear understanding of data structures and algorithms.
• Expertise in implementation of custom UI components along with fabulous animations and  write/understand Rest APIs
• Experience working with Google Maps, Social APIs, Geo-locations, Media permissions, SMS fetch, etc.
• Experience in memory management and in designing high- performance apps

Opportunity:

Create a consumer facing front end application that will be used by millions of users. 

What you will do:

• Develop our mobile apps using Swift/ObjectiveC.
• Work with backend, frontend, and other developers to build out a customer-centric experience that will constantly evolve.
• Work with our designers and customer success team to create a seamless user experience.
• Respond to support team tickets as needed to resolve bugs and issues.
• Participate in contributing ideas, updates, and product development areas to the team.

Experience Range: 

3-5 years with technical hands-on experience in building a consumer mobile app. You must have shipped an app to the stores.

Technical Expertise:

• 3-5 years experience with iOS native apps.
• Strong knowledge of Swift and ObjectiveC.
• Strong command of JavaScript ES6.
• Know how to build (fairly) complex layouts without using any CSS frameworks.
• Strong problem solving and analytical skills using data structures.
• Comfortable in a fast-paced startup environment.
• Bias for action shipping quality code quickly.

Company Introduction 
Crumb Software is a Design Studio seeking creative and skilled developers to join our fast-growing team. Our mission is to design and develop technology that improves its users' lives while providing an exceptionally high level of service to our clients.

We are looking for experienced developers who want to be part of a fast-paced, dynamic environment, where everyone's opinions and efforts are valued. We hire outstanding professionals and allow them to thrive in a collaborative atmosphere that values learning, growth, and hard work.

If you have the desire to be a part of an exciting, challenging, and rapidly-growing software development consultancy, and if you are passionate about software development and creating the finest apps in the market, please consider applying.

Job Description 
We are looking for React Native developers 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.

This is a contract-based position and we're looking for immediate joiners. 

Responsibilities

• Work as a part of a small team to build React Native iOS / Android applications
• Collaborate closely with designer(s) to build the envisioned user experience
• Architect, build, and maintain excellent React Native applications with clean code
• Implement clean, modern, smooth animations and transitions that provide an excellent user experience
• Build pixel-perfect, buttery smooth UI's across both mobile platforms that match designs
• Integrate with the backend and other third-party APIs
• Work with native modules if required
• Leverage native APIs for deep integrations with both platforms
• Diagnose and fix bugs, performance bottlenecks for performance that feels native

Requirements

• 3+ years of professional, non-internship experience working with React Native
• Firm grasp of the JavaScript language and its nuances, including ES6+ syntax
• An understanding of React Native best practices and a commitment to following them
• Knowledge of functional programming and React Hooks
• Ability to work through new and difficult React Native issues and contribute to libraries as needed
• Familiarity with native build tools, like XCode and Gradle
• Familiarity with Expo and related libraries
• Excellent verbal and written communication skills
• Experience and desire to work with a remote, distributed team

We are looking for an experienced cross platform Mobile Developer with 2-5 years of building performant mobile apps on both iOS and Android platforms.  You are in top 5% of your field and are passionate about creating new products and innovative code.  We are building a solution that deploys elements of tokenization using block chain, ML driven portfolio selection and risk management, and a proprietary alternate secondary market for illiquid securities.  You would be developing and maintaining Cross platform Android and iOS applications. You will be working alongside other engineers and developers working on different layers of the infrastructure.

Key Requirements

• BE/ BTech or MTech/ Dual degree in Computer Science/ Software engineering or similar from a Tier 1 institute.
• Thorough understanding of Flutter and its core principles.
• Proficient in Dart6 Programming.
• Knowledge of Swift, Obj C, Xamarin & native build tools, like Xcode, Gradle (Android Studio, IntelliJ)
• Build pixel-perfect, buttery smooth UIs across both mobile platforms.
• Familiarity with RESTful APIs, JavaScript & React Native
• 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.
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Be extremely conversant in table stakes software engineering toolchain - Linux/Shell, IDE’s, Git, Debuggers, Profilers.
• Strong knowledge of UI design principles, architecture patterns, and best practices for development.
• Ability to write well-documented, clean code
• Experience launching and managing production mobile apps
• Ability to deep dive into problem-solving and build elegant, maintainable solutions to complex problems, in addition to excellent interpersonal skills.

Roles, Responsibilities and Experience:

• Cross-platform mobile app developer who has developed mobile applications and has strong experience with Ionic and Angular 7+.
• Experienced in the development and management of mobile applications, particularly hybrids (Android / iOS)
• Comprehensive experience in mobile application architecture planning
• Well qualified in mobile application design and optimization. The ideal candidate will be able to provide solutions to improve mobile app quality, understand emerging technologies, implement standards and best practices thereby able to enhance the existing stage of development and bring the mobile application, from a product standpoint, 'to the next level'
• Continuously discover, evaluate and implement new technologies as well as frameworks so as to maximize ongoing development efficiencies
• Accurately estimate development timelines and deliver per set schedule
• Solid knowledge of mobile app development practices, along with mobile testing tools and techniques
• Expertise in optimizing the mobile apps' performance
• Experienced in using Agile principles and methodologies
• A deep understanding of the mobile landscape and user behavior patterns is mandatory

Required Skills:

• Experience using web services (HTTP, REST, SOAP) using JSON.
• Knowledge of NodeJS and MongoDB will be an added advantage.
• Good knowledge of object-oriented design patterns and Multi-threading concepts
• Good knowledge of the SQLite database and the Google Play Services like Push Notifications
• Strong mobile UI design (multi-screen resolutions), coding, support and maintenance
• Knowledge of HTML5, JavaScript, and the third-party API (like Facebook, Twitter, etc.) will be added advantage
• Experience with third-party libraries and APIs
• Proficient iOS and Android mobile app experience are a plus

for a great App developer who is proficient React Native. Your primary focus will be on developing user interface components and implementing them following well-known React workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.
Responsibilities and Duties

• Developing new user-facing features using React Native
• Developing apps from scratch or adding modules to the application
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high-quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers
• Needs to have a working knowledge of React Native
• Needs to have a working knowledge of Redux
• Need to know build and deploy methodologies for Android and iOS

Key Skills
React Native, Redux, Next.js, Android, iOS
Required Experience, Skills and Qualifications
Skills

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Thorough understanding of React Native and its core principles
• Experience with popular React workflows (such as Flux or Redux)
• Familiarity with newer specifications of EcmaScript
• Experience with data structure libraries (e.g., Immutable.js)
• Knowledge of isomorphic React is a plus
• Familiarity with RESTful APIs and integration
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Familiarity with code versioning tools such as Git, SVN, and Mercurial

Job Type: Full-time