
- Design and Build sophisticated and highly scalable apps using Flutter.
- Build custom packages in Flutter using the functionalities and APIs already available in native Android and IOS.
- Translate and Build the designs and Wireframes into high-quality responsive UI code.
- Write efficient queries for core Data.
- Use of Model-View-Controller (MVC) and Model-View-View Model-Controller (MVVM) as it relates to designing, developing architecture and developing maintainable, testable, and functional software that meets product requirements.
- Explore feasible architectures for implementing new features.
- Suggest space and time-efficient Data Structures.
- Follow the best practices while developing the app and keep everything structured and well documented.
- Use CI/CD for smooth deployment.
- Document the project and code efficiently.
- Manage the code and project on Git in order to keep in sync with other team members and managers.
- Communicate with the Project Manager regarding status of projects and suggest appropriate deadlines for new functionalities.
- Ensure security guidelines are always followed while developing the app.
- Validate the cloud system to ensure any new changes do not compromise the security of the backend server.
- Suggest new features and/or enhancements.
- Consulting with our customer-facing representatives about software system design and maintenance.
- Maintaining software through product lifecycle including design, development, verification and bug fixes.
- Connect regularly with the Quality Assurance Specialist to deliver a stable app.
- Resolve all the bugs reported by the Quality Assurance Specialist in a timely manner.
- Perform time profiling and memory leaks assessment.
- Execute app verification protocol.
- Write tests for the App.
- Following company policies and quality procedures to ensure quality product deliverables.

About Zartek Technologies
About
Similar jobs
Job Overview:
We are looking for a passionate and skilled React.js Developer with 1-2 years of experience in front-end development. The ideal candidate will be responsible for developing and maintaining web applications using React.js while ensuring high performance, responsiveness, and seamless user experiences.
Key Responsibilities:
- Develop and maintain responsive web applications using React.js.
- Collaborate with designers and backend developers to implement UI/UX designs.
- Optimize components for maximum performance across multiple devices and browsers.
- Work with RESTful APIs and integrate third-party services.
- Troubleshoot and debug application issues.
- Maintain clean, scalable, and reusable code following industry best practices.
- Participate in Agile development processes, including scrum meetings and sprint planning.
Required Skills:
- Strong proficiency in React.js, JavaScript (ES6+), HTML, and CSS.
- Knowledge of Redux, Context API, or other state management libraries.
- Experience with RESTful APIs and asynchronous programming.
- Familiarity with Git version control.
- Understanding of responsive design and cross-browser compatibility.
- Basic knowledge of Node.js (preferred but not mandatory)
About the Role
We are looking for a highly skilled and experienced Senior React Native Developer to join our team and take the lead on developing our cross-platform mobile application. You’ll play a critical role in building, launching, and scaling a high-performance mobile app that runs seamlessly on both iOS and Android platforms from a single codebase.
If you’re passionate about mobile technologies, have a strong command of React Native, and are excited about creating a high-quality product from the ground up, we’d love to hear from you.
Responsibilities
- Lead the end-to-end development of a cross-platform mobile application using React Native.
- Collaborate with product managers, designers, and backend engineers to deliver high-quality user experiences.
- Build reusable components and front-end libraries for future use.
- Optimize app performance for speed and scalability across devices and OS versions.
- Ensure the app complies with design standards and platform-specific guidelines (Apple App Store & Google Play).
- Set up CI/CD pipelines for automated builds, testing, and deployment (e.g., using Fastlane, EAS, or similar).
- Integrate RESTful APIs and third-party services.
- Handle app store submissions and updates.
- Mentor junior developers and enforce best practices in mobile development.
Requirements
Must-Have:
- 5+ years of experience in mobile application development.
- 3+ years of hands-on experience with React Native.
- Strong understanding of JavaScript (ES6+), TypeScript, and React architecture.
- Deep knowledge of iOS and Android mobile app development lifecycle.
- Experience with mobile UI/UX best practices and performance optimization.
- Familiarity with native build tools (Xcode, Android Studio).
- Experience integrating REST APIs and handling network latency issues.
- Proficient with Git, GitHub/GitLab, and agile development practices.
- Experience with push notifications, in-app purchases, deep linking, and analytics SDKs.
Preferred:
- Experience with Expo or EAS for managed workflows.
- Familiarity with mobile CI/CD pipelines (Fastlane, Bitrise, etc.).
- Experience with native modules (Objective-C/Swift and Java/Kotlin) as needed.
- Knowledge of automated testing frameworks (Jest, Detox).
- Published apps in both the App Store and Google Play.
- Prior experience in startups or high-growth environments.
What We Offer
- Opportunity to lead and build a product from the ground up.
- Work with a dynamic and talented team in a fast-paced environment.
- Flexible working hours and remote-first culture.
- Competitive salary and equity options (if applicable).
- Learning and development budget.
What does the core role include?
- Designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance
- Designing stateless components in React Native
- Contributing in all phases of the development lifecycle
- Working with the developers to create and maintain a robust framework to support the apps
- Working with the developers to build the interface with a focus on usability features
What else can you expect in the role?
- Prepare and produce releases of software components
- Optimizing performance for the apps
- Problem-solving skills, analytical mind, and positive attitude
- Ability to think from end users perspective and focused on improving the overall product experience.
- Deliver across the entire app life cycle concept, design, build, deploy, test, release to app stores and support
What can fetch you brownie points?
- Hands on experience with React Native is required
- Hands-on experience in React Native APIs, ReactJS, Javascript, ECMAScript (OOJS) and JSX.
- Strong understanding of JavaScript ecosystem
- Hands on experience on Android in creating Hybrid / Native applications
- Demonstrable UI/UX experience on a large-scale app.
- Thorough understanding of React Native development tools like IDEs (Nuclide, Atom, Sublime Text, or Visual
- Good knowledge of JS frameworks like ReactJS is a plus.
Desired Skills and Experience
Hybrid Apps,React Native, Native iOS and Android Architecture understanding
• Design and code features for the website application as per the specifications provided by the Product and Design teams.
• Ship features in fast-moving agile sprints.
• Work closely with Backend, Product Design, and Product Management teams to brainstorm and chalk out details of features.
• Ability to build a feature from scratch & drive it to completion
Skills: Must have:
• Good understanding of Javascript and Clean architecture.
• Good understanding of asynchronous programming, callback, and closures.
• Strong experience with Javascript frontend framework/libraries like ReactJS
• Understanding of stateless application
• Good knowledge of CSS and its pre-processors like SASS/LESS
• Good understanding of server-side templates.
• Experience with creating cross-browser compatible web apps
• Should be Strong in MySql / Postgres database.
• Strong hold in Data structure and processing JSON
Good to have
• Basic knowledge of CI, CD
• Intermediate knowledge in any cloud services(AWS, GCP)
• Familiar with testing frameworks like Mocha, Cypress
Angular Developer
Key Responsibilities:
Responsible for coding the execution of complex designs and interactions that reflect the creative and art direction provided within the established technical framework
Responsible for creation of all coded UI deliverables
Able to shift between a creative and a technical focus depending on the project need and/or the type of project
Establishes presentation layer requirements
May need to rapidly produce interim deliverables (such as style guide components, technical specifications, browser and market analysis, prototypes, proofs of concept, etc.) in addition to the final live application
Participates in scoping and planning work
Participates in writing detailed technical and functional specifications documentation
Able to take initiative to research and learn emerging technologies
Required Skills:
Expertise in angular 4+ & above is highly preferable
Hands-on experience in Typescript, JavaScript, visualization libraries like D3
Experience in consuming REST services and implementing dynamic UIs.
Understanding of design patterns commonly used in large-scale web applications.
Experience in building high-performing and maintainable web applications.
Understanding of CI/CD will be preferred.
Knowledge of CSS pre-processors like SASS.
Proficient understanding of version management tools like SVN, Git.
Education
- Bachelors or master’s degree in Computer Science or related field
Relevant Experience
- 4 to 6 years
Job description for react js developer
In this role, you will be responsible for developing and implementing user interface components using React.js concepts and workflows such as Redux, Flux, and Webpack. You will also be responsible for profiling and improving front-end performance and documenting our front-end codebase.
- To ensure success as a React.js Developer, you should have in-depth knowledge of JavaScript and React concepts, excellent front-end coding skills, and a good understanding of progressive web applications. Ultimately, a top-class React.js Developer should be able to design and build modern user interface components to enhance application performance.
React.js Developer Responsibilities :
- Meeting with the development team to discuss user interface ideas and applications.
- Reviewing application requirements and interface designs.- Identifying web-based user interactions.
- Developing and implementing highly-responsive user interface components using React concepts.- Writing application interface codes using JavaScript following React.js workflows.
- Troubleshooting interface software and debugging application codes.- Developing and implementing front-end architecture to support user interface concepts.
- Monitoring and improving front-end performance.- Documenting application changes and developing updates.
React.js Developer Requirements :
- Bachelor's degree in Computer Science, Information Technology, or a similar field.
- Experience of 1 year working as a React.js Developer.- In-depth knowledge of JavaScript, CSS, HTML and front-end languages.
- Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.- Knowledge of performance testing frameworks including Mocha and jest.
-Familiarity with code versioning tools such as Git, SVN, and Mercurial popular frontend development tools, CI/CD tools, DevOps.
- Experience with browser-based debugging and performance testing software.- Excellent troubleshooting skills.
- Good project management skills.- Excellent knowledge of multiple technologies like .NET 4.0-4.6, ASP.NET, MVC, CSS, C# .NET, VB.NET, AJAX, JQuery, AngularJS, ADO .NET, Entity Framework.
- Working Knowledge in MVC Architecture will be preferable.
- Experience in Web Services, WCF, Web API.
- Experience in Windows Forms, WPF.
- Experience in JavaScript, Ajax, JQuery.
- Working knowledge in SQL queries Stored Procedures, with a strong background in SSRS/SSIS report writing.








