
Are you a driven React Native Full Stack Mobile Developer looking for your next challenge?
We area a growing global technology partner is looking for a skilled React Native Full Stack Mobile Developer to join their Technology and Development team.
If you're eager to showcase your expertise and collaborate with a talented group of engineers, this role is perfect for you!
We stand at the forefront of technology innovation, catering cutting-edge solutions to clients spanning diverse sectors. With a strategic emphasis on finance, banking, and corporate verticals, they're known for their excellence in delivery. We are seeking a senior developer to join their global projects team.
About the position.
The Senior React Native Full Stack Mobile Developer candidate will have a strong background in building mobile applications and will be proficient in front-end (React Native) and back-end development.
In addition to technical expertise, the candidate should have experience in testing, browser testing, and thorough documentation practices.
As a senior member of the mobile development team, you will play a critical role in designing, developing, and maintaining mobile applications that provide exceptional user experiences.
Key Responsibilities:
- Mobile Application Development: Design, develop, and maintain mobile applications using React Native for iOS and Android platforms.
- Full Stack Development: Work on both the front-end and back-end components of mobile applications, including server-side development using Azure (or other Cloud Platforms) and MongoDB (or other relevant experience)
- Testing and Quality Assurance: Develop and execute comprehensive test plans, including unit testing, integration testing, and browser testing, to ensure the reliability and functionality of mobile applications.
- Cross-Browser Compatibility: Conduct cross-browser testing to ensure consistent functionality and appearance of web-based components.
- Documentation: Create and maintain detailed technical documentation, including code comments, API documentation, and development guides.
- Code Review and Collaboration: Collaborate with team members to conduct code reviews, provide constructive feedback, and ensure code quality and consistency.
- Performance Optimization: Identify and address performance bottlenecks in mobile applications and back-end services to optimize speed and responsiveness.
- Security and Data Protection: Implement security measures and best practices to protect user data and maintain compliance with data protection regulations.
- Scalability and Maintenance: Design systems and architectures that are scalable and maintainable as applications grow and evolve.
- Stakeholder Communication: Collaborate with cross-functional teams and effectively communicate technical concepts to non-technical stakeholders.
Qualifications:
- Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
- Proven 3+ years experience as a Mobile Developer with expertise in React Native for mobile application development both with iOS and Android platforms.
- Full stack development experience, including back-end development using Azure and MongoDB.
- Proficiency in front-end technologies, including HTML, CSS, and JavaScript.
- Strong testing skills, including unit testing, integration testing, and browser testing.
- Extensive experience in mobile application design and development.
- Solid understanding of cross-browser compatibility and responsive design principles.
- Thorough documentation practices and ability to create technical documentation.
- Excellent problem-solving and analytical skills.
- Strong communication and collaboration skills to work effectively in a distributed team-oriented environment.
- Commitment to security and data protection best practices.
We offer an exciting and professional environment with excellent career and growth opportunities. They provide their team members with a professional work environment with regular team outings. Their office is located in the heart of Salt Lake Sector V, Kolkata offering a terrific workspace that's both accessible and inspiring. Joining the team means becoming part of this vibrant and dynamic team where your skills will be valued, your creativity will be nurtured, and your contributions will make a difference. In this role, you can work alongside some of the brightest minds in the industry.
Onsite Office Location: Kolkata, India (Salt Lake, Sector V)

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Job Description:
We are looking for a skilled React Native Developer to design, develop, and maintain high-performance cross-platform mobile applications for Android and iOS.
The ideal candidate must have strong command over React Native, TypeScript/JavaScript, and working knowledge of Kotlin (Android) or Swift (iOS) to build and integrate native modules when needed.
You will work closely with backend, design, and product teams to deliver seamless, fast, and stable mobile experiences for the ZestFindz ecosystem.
Key Responsibilities:
- Develop and maintain cross-platform mobile applications using React Native.
- Collaborate with design and product teams to deliver pixel-perfect, responsive UIs.
- Integrate REST APIs / GraphQL and handle authentication, caching, and error states efficiently.
- Implement and manage app state using Redux / Context API / Zustand.
- Optimize app performance, handle animations, memory leaks, and rendering issues.
- Manage offline storage using SQLite / AsyncStorage / MMKV.
- Configure and manage Firebase services - Auth, Firestore, Push Notifications, Analytics.
- Handle deep linking, in-app navigation, and app lifecycle events.
- Deploy apps to Google Play Store and Apple App Store (with signing, provisioning, versioning).
- Work with DevOps to integrate apps into CI/CD pipelines (Fastlane / GitHub Actions / Codemagic).
- Write clean, modular, reusable code with proper documentation and testing.
- Debug, profile, and optimize performance for low-end devices and weak networks.
- Ensure security best practices - secure token storage, environment management, and data encryption.
Must-Have Skills:
- Strong experience in React Native (0.70+) and TypeScript.
- Solid understanding of mobile architecture patterns (MVC, MVVM, Flux).
- Experience with React Navigation, Redux / Context API / Zustand, and API integration (Axios / Fetch).
- Familiarity with Firebase, App Permissions, and Push Notifications (FCM/APNS).
- Good understanding of Android Studio, Xcode, Gradle, and Cocoapods.
- Ability to write clean, testable code with unit and integration tests.
- Working experience with Git / GitHub / GitLab CI/CD.
- Problem-solving mindset and ability to debug across full mobile stack.
Good-to-Have Skills (Bonus):
- Knowledge of native SDK integrations (Maps, Camera, Payments, etc.).
- Experience with React Query / GraphQL.
- Familiarity with Fastlane, Crashlytics, App Center, or Sentry.
- Understanding of UX principles and animation libraries (Lottie, Reanimated).
- Experience with OTA updates (CodePush) and App Store Optimization (ASO).
Requirements:
- 4-6 years of overall development experience.
- Very good understanding of core Javascript concepts.
- 3 years of React Native experience for iOS and/or Android.
- Extensive knowledge about mobile app development.
- This includes the whole process from the first line of code to publishing in the store(s).
- Some understanding of the build process involved with iOS and Android.
- Comfortable with basic design concepts and flex ui.
- Great attention to code quality & coding standards.
- Good grasp of architectural principles and patterns.
- Proficiency in Javascript/Typescript.
- Very good communication skills in English.
We are looking for a React Native developer interested in building high-performance 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.
Responsibilities
• 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.
- Firm grasp of the JavaScript and TypeScript language and its nuances, including ES6+ syntax
- Knowledge of functional and 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 Android Studio, IntelliJ
- We are only considering Pune-based candidates who can start immediately / within 30 days
Position - React Native Developer
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.
Responsibilities
- 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.
Skills
- 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
- Experience with automated testing suites, like (Jest or Mocha)
- Working knowledge of zeplin
- Zeplin design to react screens
Experience - Minimum 3 years of exp.
UPCRED powers AI-Recommendation on Social Content Creators, helping them discover content monetization and helping Brands/Businesses explore Influencer Marketing.
The company’s advert platform is powered by artificial intelligence, which is used by businesses for Influencer Discovery, Campaign Management, and Campaign Analytics through UPCRED Pixel Management.
Our technology visions to have one-third of the world's social consumers discover new things through recommendation feeds from their favorite social media creator and which connects advertisers to these audiences to grow their business.
UPCRED Social has long-term partnerships with a variety of digital content creators and has the vision to democratize the social earning for content creators in India.
UPCRED Advert wants to be an all-in-one influencer marketing platform designed to help businesses own their influencer relationships.
Responsibilities:
The React Native App Developer will own and drive app development—including decisions about tools, technologies, and processes - for UPCRED.
This is an incredible opportunity for anyone interested in being a part of a high-performing, fast team with a massive learning curve. Our team moves fast and develops world-class products by pushing the boundaries of React Native app development. If hired, you will be part of UPCRED's in-house Product & Engineering team.
Develop cross-platform mobile applications in React Native which customers love using
Work with product, design, backend teams to develop features.
Work on bindings and integrations required with native iOS and Android libraries
Plan, estimate, and delivery your project with minimal supervision.
Skills:
2 - 5 years of React Native experience with some hands-on experience with app development and launches especially deployment with the App Store and Play Store [Android + iOS].
Understanding of REST APIs, the document request model, offline storage, state
management.
Experience in Firebase and App Analytics tools
Experience with Content/Video-based app.
Experience with native Android or iOS development.
Understanding of Social Video-based app Architecture
HOW?
Apply, and let us know your interest?
UPCRED, that's how we grow, fair and transparent!
Note: Candidates who is having a notice period of more than 45 do not apply
1: Work on the mobile application's different components, making changes in the already built UI/UX and building the newer ones as well.
end-to-end development. We’re looking for people who
● Design and implement large-scale mobile application with React-Native in a fast
paced environment
● Code pixel-perfect UIs across both mobile platforms
● Optimize performance bottlenecks for experience on par with native applications
● Set up best practices for development and drive their adoption
● Have an eye for detail and obsess over implementation quality
● Mentor young minds and build a great team.
What Are We Looking For?
● 3-5 years of experience building mobile applications
● Proficient with React Native with a minimum of 2 years of experience
● Experience in developing and delivering large scale Android and iOS mobile
applications via React-Native
● Engineers who are obsessed with optimizations and are ready to go the extra mile
to deliver the best app experience to the customers
● Firm grasp of the JavaScript language and Typescript(optional)
● Good knowledge of monitoring and tracking down app crashes and bugs using
advanced tools
● Worked in a startup environment with high levels of ownership and commitment
● A growth mindset and passionate about building things from the ground up, and
most importantly, you should be fun to work with
2. 3 + years of UI Development Experience
3. Has implemented coding patterns and built UI framework
4. Cross browsers support/experience and knowledge of DOM manipulation on different browsers
5. Performance enhancements on web page load and execution
6. Experience with tools like Firebug.
7. Basics knowledge on Ajax, jsp etc.
8. Experience in Adobe Photoshop & Adobe Dreamweaver to mock up UI elements.
9. Knowledge in any prototyping tools.
10. Use responsive web design to create applications that automatically conform to multiple screen sizes/devices.
11. Conduct usability testing to identify and fix UI issues
12. Familiar with popular UI libraries like Sencha, AngularJS, ExtJS & JQuery
13. Collaborate with business analyst to discuss user interface requirements and brainstorm UI ideas.
Job roles and Responsibilities:
· Ability to develop UI framework on JavaScript and CSS which confines to requirement of Solutions.
· Ability to work on cross browser compatibility
· Develop reusable components.
· Work closely with other developers in the team









