
- You have a minimum of 6 years of experience building high-performance consumer-facing mobile applications at Product companies of a decent scale.
- You have founded/worked in a start-up and have worked in an enterprise environment
- You have a keen eye for mobile architecture and have led/participated in architectural discussions.
- You have a passion for mentoring and helping people on your team grow and achieve their goals and work with cross teams.
- You practice test-driven development and you are able to drive agile practices.
- You have worked with multiple languages/frameworks and have expertise in any one programming language/framework/stack.
- You have published reusable packages.
- You have worked with building automation, devise farms, multi-target testing.
- You are able to optimize the application for performance and speed.
- You are an excellent collaborator & communicator. You know that start-ups are a team sport. You listen to others, aren’t afraid to speak your mind and always try to ask the right questions.
- You are excited by the prospect of working in a distributed team and company.

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Job Profile: React Native Developer (2+ Years Experience)
Location: Kolkata
Work Mode: Work From Office
Experience Required: 2+ Years
Employment Type: Full-Time
Job Description
We are looking for an experienced React Native Developer with 2+ years of hands-on experience to join our mobile development team in Kolkata. The ideal candidate will be responsible for building high-quality, scalable, and performance-optimized mobile applications for Android and iOS platforms.
Key Responsibilities
- Develop and maintain cross-platform mobile applications using React Native
- Convert UI/UX designs into pixel-perfect mobile interfaces
- Integrate RESTful APIs and handle asynchronous data
- Optimize mobile applications for performance, stability, and scalability
- Implement state management using Redux, Context API, or other libraries
- Write clean, maintainable, and reusable code
- Debug, troubleshoot, and resolve production and performance issues
- Collaborate with backend developers, designers, QA, and product teams
- Participate in code reviews, sprint planning, and Agile ceremonies
- Publish and maintain apps on Google Play Store and Apple App Store
Required Skills & Qualifications
- 3+ years of experience in React Native
- Strong knowledge of JavaScript (ES6+) / TypeScript
- Hands-on experience with React Hooks and Functional Components
- Experience with Redux / Context API
- Strong understanding of mobile UI/UX guidelines
- Experience with REST APIs and third-party SDK integration
- Familiarity with Android Studio and Xcode
- Experience using Git for version control
Good to Have
- Experience with Native Modules (Android / iOS)
- Knowledge of Expo
- Experience with Firebase (Auth, Push Notifications, Analytics)
- Familiarity with CI/CD pipelines for mobile apps
- Understanding of app performance optimization techniques
Behavioral & Soft Skills
- Strong analytical and problem-solving skills
- Good communication and collaboration abilities
- Ability to work independently and meet deadlines
- Willingness to work from office in Kolkata
What We Offer
- Stable work-from-office role in Kolkata
- Opportunity to work on live production mobile applications
- Career growth and technical learning opportunities
- Supportive and collaborative work environment
Essential Duties and Responsibilities:
- Build pixel-perfect, UIs across both mobile platforms.
- Design,develop, secure high performing mobile applications using React Native for both Android & IOS .
- Translate designs & wireframes into a high-quality code & Mobile UI .
- Leverage native APIs for deep integrations with both platforms.
- Diagnose, fix bugs & performance bottlenecks for performance that feels native.
- Maintain code and execute UTC to ensure the product is of the highest quality.
- Participate in the development and preparation of documentation.
Skills
- Must have exp in react native (must) and native Apps too.
- Team Player
- Familiarity with UTC , code versioning and CI/CD tools like Git, SVM, Jenkins.
- Proven development experience on smartphone platforms.
- Hands-on experience on React Native Framework, including React JS, React Native, and JavaScript.
- Extensive programming experience with at least one programming language such as Swift, Java, JavaScript.
- Deep familiarity with iOS or Android development.
- Familiarity with RESTful APIs
- Familiarity with code versioning and CI/CD tools like Git, SVM, Jenkins.
- Must have worked on at least one app that is published in AppStores.
Bonus:
- Experience in Objective-C, Swift, and Cocoa Touch.
- Good Knowledge of HTML5, CSS.
- Extensive experience with iOS Frameworks such as Core Data and Core Animation.
- Knowledge of Apple’s design principles and application interface guidelines.
- Mandate Experience on Google Play console and Native build tools like XCode and Android Studio.
- Strong understanding of SDLC and Agile development methodology.
- Basic understanding of Accessibility.
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 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.
About the company
Credit cards haven't changed much for over half a century so our team of seasoned bankers, technologists, and designers set out to redefine the credit card for you - the consumer. The result is OneCard - a credit card reimagined for the mobile generation. OneCard is India's best metal credit card built with full-stack tech. It is backed by the principles of simplicity, transparency, and giving back control to the user.
The Engineering Challenge
“Re-imaging credit and payments from First Principles”
Payments is an interesting engineering challenge in itself with requirements of low latency, transactional guarantees, security, and high scalability. When we add credit and engagement into the mix, the challenge becomes even more interesting with underwriting and recommendation algorithms working on large data sets. We have eliminated the current call center, sales agent, and SMS-based processes with a mobile app that puts the customers in complete control. To stay agile, the entire stack is built on the cloud with modern technologies.
Check out our apps here:
OneCard (Best credit card app) : http://www.getonecard.app/">www.getonecard.app
OneScore (5 million downloads): http://www.onescore.app/">www.onescore.app
Senior Software Engineer – Frontend
Create a consumer facing front end application that will be used by millions of users.
What you will do:
- Develop our mobile apps using React Native.
- 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 Android/iOS native apps or React Native based apps and Web front-end technologies such as React.
- 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.
Wanted React Native Developer
We are looking for Junior and Senior React Native developer interested in building mobile apps for both the iOS and Android platforms.The candidate should be able to build high-quality, and performant applications with good coding standards and according to design.The developer must be skilled in development, writing clean and scalable code, and documenting functionality.
Experience
1 - 3 years
Education
Any Graduate
Location
Hyderabad
Candidate Requirements
- Experience with React Native skills such as Redux/Mobx, GraphQL, Animation, Authentication, etc.
- Must have built Mobile apps that are deployed to App store and google play store.
- Hands-on experience in using Hooks for functional components with the State, Pure Components , etc.
- Familiarity with native build tools, like XCode, Gradle Android Studio, IntelliJ
- Experience with automated testing suites, like Jest or Mocha
- Should have the ability to integrate third-party libraries and APIs.
- Familiarity with code versioning tools such as Git.
- Good knowledge of React Native and its core Principles.
Key Skills
- React Native
- Mobile Application Development
- IOS Development
- Javascript
- Android Development
- React.Js
We are looking for talented front-end developers who can help us in enabling our customers deliver excellent experiences to end users. As a customer experience management firm , we are constantly enhancing user experiences in several of our customers' online platforms. The role of a front-end developer in our teams is crucial in realizing our design solutions without any loss in translation. We are looking for developers who can contribute in building the best in class digital experiences through the right use of frameworks , technologies and code.
Key Skills:
2+ years of professional Mobile Development experience Core strength with React or React Native Experience with Typescript, Redux, Node.JS is desired Proficiency with Native iOS or Android App Development (both would be a major plus) Knowledge of App deployment processes through Apple App Store or Google Play Store A working understanding and experience of Test-Driven Development and CI/CD best practices Ability to use a wide variety of open-source technologies and cloud services (experience with AWS is a plus)
About Moonraft Innovation Labs
We are here to advance human experience through design-driven innovation. Design, to us, is all
about creating new meanings, while art is about self expression and emotive appeal. Bringing these
two creative disciplines together and operating at their intersection with business and technology, we
drive business innovations with differentiating customer experience.
We place the human at the center, bringing quantitative and qualitative techniques together to
develop consumer insights. Our techno-creative team, bridging consumer insights, business
understanding and advanced technology skills, then builds humanistic technology solutions.
We believe experimentation is at the core of every innovation. Radical innovation, in our view, is
just an event recognized in hindsight when a number of trial-and-error attempts spark off a
breakthrough. Our approach embraces rapid prototyping and empirical evidence in everything we
do. As the name says, we are Moonraft Innovation Labs, driving innovation through
experimentation.
"Rafters", who inhabit Moonraft, recognize only idea as the boss. They live by imagination,
simplicity and speed. Our egalitarian culture and environment are designed for rafters to thrive and
deliver elegant solutions for complex problems.
Dear all,
CONTUS is looking for an ever-growing team with young brains in majority and a couple of senior experts to guide them. A fun-filled group that learns by doing things and love what they do. Opportunities are wide as we not only take up client projects but churn out own apps as well.
Why should you choose Contus?
- A great platform to learn and work in complex full stack development projects Angular, React, Node, Laravel which can take to the next level.
- Attractive perks as per Industry standards & Essential benefits
- Five days of work in a week with flexible work timings.
- A great opportunity to handle Enterprise Accounts across the globe and to manage projects in Internet of Things(IoT), Block-Chain, Full Stack development, Enterprise Mobility, DevOps, Agile and a lot more to keep yourself updated on current trends
- Enterprise accounts includes leading Automobile, Network Security, Truck, Construction, Embedded Electronics oriented clients all over the world which seeks our help in Digital Transformation
CONTUS 11 - https://www.youtube.com/watch?v=sOC62PTw2MU">https://www.youtube.com/watch?v=sOC62PTw2MU
CONTUS Awards 2018 - https://www.youtube.com/watch?v=EX8NEQFQ60s&t=50s">https://www.youtube.com/watch?v=EX8NEQFQ60s&t=50s
Designation : Application Developer / Sr.Application Developer / Tech Lead - Android
Mode of Employment : Permanent
Salary : Industry Standards + Benefits (Medi-Claim Insurance & Accidental Policy)
Work Location : Guindy, Chennai
Working days :Monday to Friday 9.30 AM to 6.30 PM (Flexible 8 Hours)
Venue Details:
CONTUS
- Kamak Towers, 12A,(SP), 6th floor,
- Thiruvika Industrial Estate, Ekkatuthangal, Guindy, Chennai - 32.
- Land Mark: Behind Olympia tech Park.(3rd right)
Note:
*** Candidates attended in 3 Months of duration are not eligible to apply again ***
Job Summary :--
An ever-growing team with young brains in majority and a couple of senior experts to guide them. A fun-filled group that learns by doing things and love what they do. Opportunities are wide as we not only take up client projects but churn out own apps as well.
Responsibilities:-
*Develop and create applications for client projects and in-house requirements.
*Make use of Android frameworks to create UI faster, take control/understand client projects from start to end.
*Deliver the projects successfully in-time with quality.
*Stay updated on the latest industry trends, development practices and evolving mobile technologies.
What we look for :-
Good analytical and programming skills in Java, Android 2.2 + SDK/NDK Development (Web Services & API's, LBS, UI and XML, Layout Design, Social Network Integration, Content Providers etc.), XML, JSON, SQLite3 and MySQL.
Handful experience in tools like Android Studio, Eclipse and analytical tools like Find Bugs and PMD.
Basic knowledge about Hybrid Application and ideas on publishing applications in Android Market.
Knowledge of PHP-driven CMSes & versioning tools like SVN will be added an advantage.
Should be able to do Client Interaction
Expertise in design and development of applications to Android devices / platform.\
Maintain quality and ensure responsiveness of applications.
Hands on experience with Android Studio, APIs and Database usage.
Expertise in automated test tools for Android application.
Exposure to UI design principles and best practices.
Knowledge of open-source Android ecosystem and the available libraries.
Experience in NDK/C++/Java/Android framework.
Hands on experience with SCM tools and services such as Git, Gitlab, gerrit, SVN, others
Familiarity with open source tool chains.
Other GUI design tools and framework experience desirable.
The following are the criteria, that we expect experienced candidates to meet.
- Strong in OOPS concepts and must know how to incorporate them in projects.
- Must have through understanding of all these android components. (Activities, Fragments, Service, Intent Service, Broadcasts, AsyncTasks, SQLite, Push Notifications)
- Must have strong understanding of data structures of the Java's Collections API. (List, Map, Set, Queue)
- Must be comfortable in writing multi-threaded and thread safe applications.
- Must be familiar with design patterns (MVP, MVVM).
- Should be comfortable using Android Profiler for tracking memory, network and cpu usage.
- Should be familiar with writing applications for portrait and landscape orientations.
- Added advantage if the candidate can code in kotlin.
- Added advantage if the candidate has knowledge on XMPP, Socket, Webrtc, VOIP, BLE, Bluetooth Classic.
Kindly prepare on below topics well;
OOM
JVM
Multithreading, Overriding, Overloading
Abstraction, async task,
Main thread, Services
About CONTUS :-
CONTUS started providing digital transformations solutions and services since 2008, even before the actual digital transformation era started. Today after a proud 11 years of successful existence, Contus is consciously driven by the future of Digital techs, not by the current or legacy techs.
The solutions and services of Contus have connected millions of devices and people and hearts across the globe right from heartbeats monitors to Televisions to Cars & trucks to smart cities, with it's Over The Top (OTT) Video on Demand and messaging solutions and also with its full stack IOT enablement services.
With hundreds of digital engineers @Contus, we have enabled millions of end users to connect for elaborate used cases in more the 50 countries.
To know more about us, visit http://www.contus.com/">www.contus.com, a leading mobile application development and web development company
- Experience in React-native, IOS Development (with Swift).
- Experience in IOS SWIFT Framework
- Proven experience in React Native components in native iOS and Android
- Good understanding of Android / iOS / Web design guidelines, SDK and excellent JavaScript skills.
- Knowledge of React and the Java script ecosystem
- Exposure to other hybrid mobile platforms like IONIC,Sencha, HTML5, PhoneGap, jQuery Mobile etc.
- Familiarity with RESTful APIs development.
- Expertise with code testing best practices, including unit and integration testing to ensure quality of code.
- Familiarity with code versioning tools such as Git, SVN, Github.
- Excellent verbal and written communication skills
Preferred Skills & Knowledge: IOS Development (Swift), React Native








