
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
Make sure to mention any other frameworks, libraries, or other technologies relevant to your project
List any education level or certification you may require

About Kretoss Technology
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Software Developer - React Native Developer
Job Description
A major part of our work at Cobold Digital LLP is getting businesses online. We provide efficient solutions to our clients in the fields of Website Design & Development & Website Maintenance. If you wish to work with a wide array of clients that depend on you to represent them online, our Website Development team is the right place for you.
We are looking for an experienced top-notch React Native Developer to grow with our dev team. As a React.js Developer, you will be involved from conception to completion with projects that are technologically sound and aesthetically impressive.
Responsibilities
- Work as part of a small team to build React Native Applications for our clients.
- Architect, Build and maintain excellent React Native applications with clean codes.
- Implement pixel-perfect UI’s that match designs.
- Implement clean, modern, smooth animations and transitions that provide an excellent user experience.
- Integrate third-party APIs.
- Write unit and integration tests.
- Release applications to IOS and Android platforms.
- Work with Native modules when required.
- Assist with building estimates.
- Attend daily standups
- Interact clients via google meet, Zoom, and Emails.
- Work with Modern tools like Jira, Bitbucket, Google Docs, etc.
Requirements
- 2+ years of Profession experience working with React Native.
- 3+ years of experience as Software Developer
- Experience with Swift,Objective C and Java is a plus but not required
- Must have experience on a large complex system
- Ability to take ownership of your work.
- Ability to manage multiple projects
- Undertaking of React Native best practices.Experience with JavaScript
- Experience with REACT
- Experience with HTML / CSS
- Experience with REST API's
- Git knowledge is a plusTeam player
- Good time-management skills
- Great interpersonal and communication skills



We are looking for a React Native developer who can build a performant mobile app on both the iOS and Android platforms. We’re looking to take our dashclicks.com web app and turn portions of it into an amazing mobile app.
You will be responsible for architecting and building this app, 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:
- Transition existing React web apps to React Native.
- Build pixel-perfect UIs across both mobile platforms (iOS and Android).
- Design and develop highly complex application components, and integrate software packages, programs and reusable objects
- 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.
- Make use of additional JavaScript libraries such as Redux to make asynchronous API calls as well as improve the performance of the apps
- Perform real-time monitoring and fixing crashes.
- Plan the data and presentation layer of the applications’ front-end Implement pixel-perfect UI's that match designs.
- Implement clean, modern, smooth animations and transitions that provide an excellent user experience.
- Write unit and integration tests. Work with native modules when required.
Skills:
- 3+ years of experience in React Native (iOS and Android).
- Have a deep knowledge of Redux architecture
- Must have worked with Firebase Database and Firm grasp of the JavaScript language and its nuances, including ES6+ syntax
- Strong understanding of back-end and front-end technologies such as NodeJS, React.JS, Web Socket, Pub-Sub, TypeScript, HTML5, CSS and CSS-In-JS.
- Knowledge of object-oriented programming
- Ability to write well-documented, clean JavaScript code
- React assumptions concepts like Virtual DOM, JSX, Component State and component lifecycle
- 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
- Knowledge of monitoring tools like crash reporting and analytics
- Knowledge of functional or object-oriented programming
- Experience with automated testing suites, like (Jest or Mocha)
- Understanding of mobile UI frameworks like Native Base, UI Kitten, Material Kit etc.
- Experience implementing authorization and authentication workflows using JWT, OAuth2 etc.
Things that make us the World’s leading white-label marketing software development company:
- We do not outsource any of our fulfillment services.
- We offer a fully white-labeled dashboard allowing our users’ clients to log in and see their accounts’ progress.
- We offer educational and prospecting tools to help businesses generate growth and revenue.
What do we bring to the table?
- Competitive base pay and benefits package with exciting growth plans.
- A chance to work with professionals across various areas of expertise on a product loved by 30,000+ marketing agencies worldwide.
- 9 hours a day & 5 days a week working structure.
- A chance to learn & grow in a fast-paced environment, driving transformational growth for our brand.
- Fully remote work offers you the chance to balance your professional and personal life.
Come join us on this journey, we're looking forward to talents like you.

Recently Expertrons raised a funding of $2.3 Mn in the Pre Series A round witnessing investors like Yoga Capital, Venture Catalysts, Auxano Capital, and existing investors LetsVenture, Ivycap Ventures, Iceland Venture Studios, Nikhil Vora (MD, Sixth Sense), and more.
Website: https://www.google.com/url?q=https://www.expertrons.com/&sa=D&source=editors&ust=1632723867004000&usg=AFQjCNEfP9iCbbT6MjFXH6uESAJ_LSbiUw">https://www.expertrons.com/
Expertrons Android App: https://www.google.com/url?q=http://bit.ly/expertrons&sa=D&source=editors&ust=1632723867005000&usg=AFQjCNEPdzkaKsW0le4tCDbxTVkfoKx1wA">bit.ly/expertrons
Product Demo Video: https://www.google.com/url?q=https://bit.ly/3sFG0G1&sa=D&source=editors&ust=1632723867005000&usg=AFQjCNFHdgcw-AcUqrEALvAOKrMlwWH54g">https://bit.ly/3sFG0G1
Watch Explainer Video: https://www.google.com/url?q=https://bit.ly/3zeBmRM&sa=D&source=editors&ust=1632723867005000&usg=AFQjCNHhRW34qC2qeEREheVGUUhhD3-Hkg">https://bit.ly/3zeBmRM
Responsibilities and Duties
1. Build pixel-perfect, buttery smooth UIs across both mobile platforms
2. Strong knowledge of React workflows (such as Flux or Redux)
3. Implement clean, modern, smooth animations and transitions that provide an excellent user experience
4. Integrate third-party APIs
5. Release applications to IOS and Google Play stores
6. Ability to work through new and difficult React Native issues and contribute to libraries as needed
7. Ability to create and maintain continuous integration and delivery of React Native applications
8. Experience with code optimization and performance improvements
9. Experience in Mongo DB, Node JS, AWS is a plus
10. Strong knowledge of GIT
Required Skills:
1. Strong Algo/DS/Troubleshooting/Problem solving skills & analytical skills
2. Database - React Native, Redux, NOSQL, Redux Saga, Flux, Angular
The idea is not to live forever, but to create something that will!
Be a part of our growing team and climb up the ladder of success. So, if you have the expertise, skills, quirks that can help you add value to Expertrons, then apply with us, now!


- Designing and building sophisticated and highly scalable apps using Flutter
- Building custom packages in Flutter using the functionalities and APIs already available in native Android and iOS
- Designing highly scalable, testable code
- Discovering and fixing programming bugs
Desired Candidate Profile
What you need to have:- Understanding of good Object Oriented Design principles such as SOLID
- Familiarity with Design Patterns
- Experience with Clean Architecture
- Experience with Dart/Flutter packages and APIs: bloc, flutter_bloc, Streams, rxDart
- Experience in Native Mobile app development Kotlin and Swift



- Build pixel-perfect UIs across Android and iOS mobile platforms.
- Leverage native APIs for deep integrations with both platforms.
- Diagnose and fix bugs and performance bottlenecks for performance that feels native.
- Developing and releasing complex, data-driven apps using React Native as the primary application framework.
- Proficiency writing Modern JavaScript, including ES6+, and JSX.
- Maintain code and write automated tests to ensure the product is of the highest quality.
- Must be able to develop high-performance cross-platform apps using React-Native.


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



React Native Developer Job Description
- We are looking for 2-3 years of qualified React Native developer to join our work on our Fintech Products (Algomojo, Optionaction, Tradeaction)
- You will be working with our engineers to develop and maintain high-quality mobile applications for both platforms like Android and iOS.
- Ultimately, you should be able to design and build the next generation of our mobile applications.
- The role requires developers to be comfortable with bleeding-edge technology and be able to work in a fast-paced environment.
Job Responsibilities and Required Skills :
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.
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.
Experience with React Js, React Native, JavaScript including DOM manipulation and the JavaScript object model.
Thorough understanding of React Native and its core Principles.
Hands-on experience on React Native Framework for at least 2-3 years.
Familiarity with code versioning tools (Such as Gitl)
Familiarity with RESTful APIs
Familiarity with modern front-end build pipelines and tools.
Experience with common front-end development tools such as Babel, Web pack, NPM, etc.
Experience with Native Mobile app deployment on App store and google play store.
Knowledge of native Android and iOS is required
Knowledge of TV App Development is a plus






About The Company
Tekhne is a digital agency based in Mumbai and Amsterdam, that creates user-focused experiences. More info: tekhne.nl
Through our SaaS app immidi (http://immidi.com), we are transforming the way Enterprises connect with their B2B customers. We are looking for talent who can help us scale the app to new heights.
As a Senior React Native Developer, you will play a key role to define the solution direction, deliver and maintain good quality code, use structured problem-solving and produce scalable long-term solutions.
Our App is built with React Native for iOS and Android, supported by multiple NodeJS web-services and our deployments are automated using CI/CD tools.
Some of our key clients: Unilever, L'Oréal, KraftHeinz, UNDP
This job is located in our Mumbai office.
What We Are Looking For:
- You have a minimum of 4 years experience building and publishing Mobile Apps (iOS/Android);
- At least 2 years of experience in React, React Native, Redux;
- You have experience with SaaS products, handling Native configurations with multiple Git branches;
- You worked with HTML5, CSS3, JavaScript and JavaScript libraries and frameworks;
- Experience with NoSQL databases such as DynamoDB;
- Experience with NodeJS and backend services;
- Experience with Amazon services such as S3 and SQS is a plus;
- Experience with automated deployment CI/CD tools;
- Knowledge of iOS & Android design principles and interface guidelines;
- You have good communication skills in English;
- You like working in a fast-paced international environment;
- You are interested in coaching your fellow developers;
We Offer You
- A challenging position in a growing team with a strong start-up mentality;
- Competitive salary with benefits;
- ‘All-you-can-eat’ Friday lunches;
- Arrange your own workstation: Macbook/iPhone and all other options a techie could dream of;
- International working environment;

