React Native Developer

About the Role

We are looking for a Senior Mobile & Full Stack Engineer with 5–8 years of experience whocan build high-quality mobile applications for iOS and Android while also contributing to enterprise-grade web applications, backend systems, and databases.

This role is ideal for a product-minded engineer who enjoys working across the stack and is comfortable contributing to multiple products and AI-driven systems. Our engineering culture emphasizes ownership, adaptability, and end-to-end problem solving over strict

role silos.

Key Responsibilities

● Design, develop, and maintain mobile applications for iOS and Android . React Native focused app development. Flutter, Native experience will be an added advantage.

● Collaborate on full-stack enterprise web applications, including frontend, backend, anddatabase layers.

● Build and integrate backend services, APIs, and AI/ML-powered agents into applications.

● Participate in system design discussions and contribute to scalable, secure architectures.

● Work closely with product managers, designers, and AI teams to deliver end-to-end solutions.

● Write clean, maintainable, and well-tested code across platforms.

● Review code, mentor team members, and promote engineering best practices.

● Troubleshoot production issues and optimize application performance.

Required Technical Skills

● 5–8 years of professional software development experience.

● Strong experience in mobile application development for both iOS and Android.

● Hands-on experience with cross-platform frameworks such as React Native .

● Experience with native iOS (Swift) and/or Android (Kotlin/Java) is a plus.

● Solid experience in backend development using Node.js, Python, Java, or similar technologies.

● Strong understanding of RESTful APIs and/or GraphQL.

● Good understanding of relational and NoSQL databases (PostgreSQL, MySQL, MongoDB, etc.).

● Experience with enterprise web application development.

● Familiarity with cloud platforms such as AWS, GCP, or Azure.

● Working knowledge of CI/CD pipelines, Git, and modern DevOps practices.

AI & System Mindset

Experience working with AI-powered systems is a strong plus. Candidates should be comfortable integrating AI agents, third-party APIs, and automation workflows into applications, and should demonstrate curiosity and adaptability toward emerging AI technologies.

Soft Skills & Attributes

● Strong ownership mindset with the ability to work independently.

● Comfortable working across multiple products and technology stacks.

● Excellent problem-solving and analytical skills.

● Clear communication and collaboration skills.

● Ability to thrive in fast-moving, ambiguous environments.

Education

Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.

• Design, build and maintain efficient, reusable, and reliable code
• Development of UI elements and Integration with APIs
• Identify bottlenecks and bugs, and devise solutions to these problems
• Help maintain code quality, organization, and automatization
• Ensure high performance and responsiveness of requests.
• Must be able to write solutions that scale
• 3 - 4 years of full-time work experience in React Native
• Self-motivated with excellent work ethics
• Experience in React Native bridging concepts
• Experience with Typescript.
• Have developed and published apps for either Android or iOS.
• Design, development, coding, testing and debugging skills
• Knowledge of version and revision control practices and procedures
• Knowledge of prototyping and rapid development techniques
• Strong verbal and written communication skills Desired Candidate
• State management in mobile applications
• Security methodologies in mobile application development
• Experience with offline storage, and performance tuning
• Experience working on plugin integration.
• Optimize code for performance and scalability
• Deployment of apps on App Store / Play Store
• Collaborate with cross-functional teams to define, design, and ship new features
• Experience working with remote data via REST and JSON
• Experience with third-party libraries and APIs
• Proficient understanding of code versioning tools such as GIT
• Ensure the technical feasibility of UI/UX designs
• Can work well independently as well as in a team
• Flexible to work in any mobile technology
• Understanding of Agile development methodologies
• Interacting with Business Analysts, SMEs to understand the Business Processes and Business Rules
• Familiarity with native build tools, like Xcode, Gradle ( Android Studio, IntelliJ)
• Strong mobile development experience, including integration with Native Modules and custom iOS/Android SDKs
•  

• Significant experience working with React web and mobile along with tools like Flux, Flow, Redux, etc.
• In-depth knowledge of JavaScript, CSS, HTML, functional programming, and front-end languages
• Strong knowledge of React fundamentals such as Virtual DOM, component lifecycle, and component state
• A complete understanding of the full mobile app development lifecycle right from prototyping
• Knowledge of type checking, unit testing, typescript, prop types, and code debugging
• Experience working with REST APIs, document request models, offline storage, and third-party libraries
• Strong understanding of web technologies like JavaScript, HTML, and CSS
• Knowledge of user interface design and responsive designs
• Well-versed in a variety of React Native software and technologies such as Jest, Enzyme, ESLint, and so on

• Experience in integrating with various SDKs like Swift
• Significant experience working with react native along with tools like Flux, Flow, Redux, etc.
• In-depth knowledge of JavaScript, CSS, HTML, functional programming, and front-end languages
• Strong knowledge of React fundamentals such as Virtual DOM, component lifecycle, and component state
• A complete understanding of the full mobile app development lifecycle right from prototyping
• Knowledge of type checking, unit testing, typescript, prop types, and code debugging
• Experience working with REST APIs, document request models, offline storage, and third-party libraries
• Strong understanding of web technologies like JavaScript, HTML, and CSS
• Knowledge of user interface design and responsive designs
• Well-versed in a variety of React Native software and technologies such as Jest, Enzyme, ESLint, and so on
• Understanding of React Native best principles and design aesthetics
• A positive mindset and continuous-learning attitude
• A collaborative approach to building apps and solving complex problems
• Attention to detail and problem-solving skills
• Client-focused approach to create user-centric designs
• Good interpersonal and collaboration skills
• Ability to write clean, well-documented code that follows good coding practices
• Good in Agile development process.
• Excellent English verbal and communication skills.
• Should be able to handle the customer individually as needed
• Support the customer as and when required

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 Android Developer who possesses a passion for pushing mobile technologies to the limits. This Android app developer will work with our team of talented engineers to design and build the next generation of our mobile applications. Android programming works closely with other app development and technical teams.

• Design and build advanced applications for the Android platform
• Collaborate with cross-functional teams to define, design, and ship new features
• Work with outside data sources and APIs
• 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 maximize development efficiency

• BE/MS degree in Computer Science, Engineering or a related subject 
• Proven software development experience and Android skills development
• Proven working experience in Android app development and have published at least 5 original Android apps
• Experience with integrating various Android SDKs
• Knowledge of developing own Android SDKs for distribution to other developers
• Experience working with remote data via REST and JSON
• Experience with third-party libraries and APIs
• Working knowledge of the general mobile landscape, architectures, trends, and emerging technologies

• Know how to build android applications and integrate APIs/SDKs
• Know how to create android SDKs
• Have built and launched atleast 5 android apps
• Ability to build complex apps on Android

SUMMARY

We are looking for a React Native developer interested in building performance mobile apps on both the iOS and Android platforms. You will be responsible for architecting, designing, 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. We are looking for self-motivated, energetic candidates who are looking for the next set of challenges in their careers. Mobile app developer, you will be responsible for developing and maintaining the mobile app. NOT a classic Website Development job involving simple development and maintenance of websites. We work on complex web applications that are technologically challenging. The projects are done in small teams, which results in greater responsibility for each member of the team. We genuinely want you to learn and grow and will provide you ample opportunities for that.

Responsibilities:-

• Deliver innovative solutions to drive next-generation user experiences, designs, and technologies.
• In-depth knowledge and proven record in developing mobile apps.
• Extensive experience with React and state management frameworks such as Redux/MobX.
• Experience with React Native.
• Technical knowledge of RDBMS.
• Development experience with iOS/Android or both.
• Strong knowledge of data structures, algorithms, and run-time optimization.
• Ability to write well-documented, clean JavaScript code.
• 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.
• Maintain code and write automated tests to ensure the product is of the highest quality.
• Rock-solid at working with third-party dependencies and debugging dependency conflicts

Required Skills:-

• Firm grasp of the JavaScript (and Typescript or Closure Script) language and its nuances, including ES6+ syntax.
• Knowledge of (functional or object-oriented) programming.
• Familiarity with native build tools, like XCode, Gradle (Android Studio, IntelliJ)
• Understanding of REST APIs, the document request model, and offline storage.
• Experience with automated testing suites, like (Jest or Mocha)
• React Native
• Redux/Mobx
• RDBMS,
• Third-Party SDK integration.
• Development experience with IOS/Android or both

Industry: IT / E-Learning and Assessment

Functional Area: IT Software - Application Programming, Maintenance

Role Category: Programming & Design

Role: React Developer

Employment Type: Permanent Job, Full Time

Qualification: B.E./B.Tech./MCA