ExtJS Developer

React Frontend Developer Mobile Responsive UI & Testing

Location: Remote

Shift: EST hours

Company: ARDEM Incorporated

Position Overview:

ARDEM is seeking an experienced Frontend Developer to enhance our existing React-based loan amortization desktop application by extending it with full mobile responsiveness and comprehensive testing. This role focuses on adapting and optimizing the current web application for iPad and iPhone devices, ensuring a seamless and consistent user experience across all viewports without developing a separate mobile app.

Key Responsibilities:

• Extend existing React components using responsive CSS to ensure optimal usability on iPad and iPhone devices.
• Adapt complex financial data tables and interactive interfaces for touch-friendly mobile interaction while preserving full desktop functionality.
• Implement progressive enhancement techniques to scale features effectively across varying device sizes.
• Identify and resolve edge cases in the data transformation pipeline and improve application robustness.
• Develop comprehensive technical test cases to validate component behavior, data flow, and API integrations.
• Debug and resolve CSS layout and rendering issues across devices, screen sizes, and orientations.
• Collaborate with backend and QA teams to ensure high-quality, stable, and performant releases.

Required Skills & Experience:

• Strong proficiency in React, JavaScript (ES6+), and modern CSS (Flexbox, Grid, media queries).
• Proven experience extending existing codebases to add responsive functionality (not limited to greenfield development).
• Experience building and optimizing financial or data-intensive web applications for responsiveness.
• Solid understanding of progressive enhancement and adaptive design patterns.
• Expertise in unit testing, integration testing, and writing detailed test documentation.
• Hands-on experience with Zustand or similar state management libraries.
• Familiarity with service-layer architectures and data transformation workflows.

Tech Stack:

• Frontend: React (functional components, hooks), Zustand (state management), TanStack Table (React Table)
• Backend: Node.js / Python APIs
• Architecture: Desktop-first application to be extended for mobile

Nice to Have:

• Experience working on financial or loan management applications.
• Familiarity with Salesforce API integrations.
• Understanding of web accessibility standards (WCAG).
• Experience optimizing large datasets or data tables for mobile devices.

Deliverables:

• Responsive enhancements for existing desktop components.
• Mobile-optimized layouts that extend, not replace, desktop functionality.
• Comprehensive test suite with fully documented test cases.
• Strengthened code architecture and error handling.
• Detailed technical documentation outlining the mobile optimization strategy.
• 
  

Additional Requirements

This opportunity enhances your work life balance with allowance for remote work. To be successful your computer hardware and internet must meet these minimum requirements:

1. Laptop or Desktop:

• Operating System: Windows
• Screen Size: 14 Inches
• Screen Resolution: FHD
• Processor: I5 or higher
• RAM: Minimum 8GB (Must)
• Type: Windows Laptop
• Software: AnyDesk
• Internet Speed: 100 MBPS or higher

Role: Full Stack Developer

Industry Type: BPM / BPO

Department: Engineering - Software & QA

Employment Type: Full Time, Permanent

Role Category: Software Development

Education

UG: B.Tech/B.E. in Computers

Job Description

As a React Native Developer at Marmeto, you will play a critical role in building high-performance, cross-platform mobile applications for iOS and Android. You will collaborate with UX/UI designers, backend engineers, and product stakeholders to deliver intuitive and scalable mobile experiences. This role demands a developer with a deep understanding of mobile architecture, native modules, and modern development best practices.

Skills:

• Minimum 4 years of hands-on experience with React Native for Android and iOS development.
• Strong proficiency in JavaScript, TypeScript, and ES6+ features.
• Solid understanding of React Native architecture, including Hooks, Redux/MobX, and Context API.
• Experience with native module integration (Android/iOS) and third-party libraries.
• Proficient in using React Navigation, AsyncStorage, and mobile design patterns.
• Familiarity with debugging tools like Flipper, Chrome DevTools, and React Native Debugger.
• Experience in publishing apps to the App Store and Google Play.
• Good understanding of mobile performance optimization and memory management.
• Proficiency with version control systems like Git.

Roles & Responsibilities:

• Design, develop, and maintain cross-platform mobile applications using React Native.
• Collaborate with UI/UX designers to implement pixel-perfect interfaces and interactions.
• Work closely with backend teams to integrate APIs (REST/GraphQL) seamlessly.
• Write clean, modular, and scalable code following best practices and design patterns.
• Troubleshoot, debug, and optimize mobile apps for maximum performance.
• Stay updated on emerging trends in mobile development and bring innovation into the team.

Requirements

Mandatory

• Should have built solutions/applications end-to-end, not just contributed as part of a larger team.
• Should envision continuing in a deep mobile development role 5+ years down the line.
• Strong command over JavaScript, TypeScript, and React Native internals.
• Experience working with Redux, React Hooks, and lifecycle methods in mobile contexts.
• Deep understanding of platform-specific limitations, capabilities, and mobile UI/UX standards.

Essential

• Proficiency with Git and collaborative workflows (e.g., branching, PRs).
• Familiarity with CI/CD for mobile.
• Understanding of offline storage, background sync, and performance monitoring.

Good to Have

• Knowledge of native development (Swift/Kotlin) to bridge native modules when needed.
• Exposure to tools like Figma, Sketch, or Zeplin for design collaboration.
• Experience with e-commerce platforms like Shopify, BigCommerce, or similar.

Job Description:

We are looking for an experienced developer to be a part of our growing team. You will be working here to create, design and develop software for both web and mobile applications using Node js.

Skills to be required:

1. To design, develop and maintain Scalable web applications using node js.
2. Collaborate with front-end developers on the integrations of elements.
3. To write Reusable, testable and efficient code.
4. working closely with front-end developers to integrate user-facing elements with server-side
5. Implement security and data protection measures.
6. Perform code reviews, debug and improve applications for performance.

 Responsibilities:

1. Proven experience for 2-4 years of experience as a Node.js Developer
2. Proficiency with front-end technologies like HTML,CSS, Javascript and React js
3. Experience with RESTful API Development
4. Knowledge of database systems like MongoDB and Mysql
5. Understanding of code versioning tools like Git
6. Strong problem solving, communication skills and team work abilities.

We are seeking a talented React Developer with hands-on experience in MUI and Tailwind CSS, as well as expertise in state management tools such as Saga and Redux. The ideal candidate should have a passion for front-end development, an eye for design, and be comfortable working in a fastpaced environment. You will be responsible for creating user interface components using React.js, React Native integrating with RESTful APIs, and collaborating with cross-functional teams to build web applications.

Responsibilities:

 Build new user-facing features using React.js, React Native and other front-end technologies

.  Develop reusable components and libraries for future use.

 Collaborate with the development team to design and implement RESTful APIs.

 Translate designs and wireframes into high-quality code.

 Create responsive HTML designs based on wireframes built on PSD, Figma, and ETC. to work across mobile and web browsers.

 Develop and implement front-end architectures and design patterns.  Stay up-to-date with emerging trends and technologies in front-end development.

 Write unit tests and integration tests to ensure code quality.

 Ensure code follows best practices and coding standards.

 Work collaboratively with UX designers and product owners to ensure a seamless user experience

• Instrumental in preparing SRS, detailed design document, case diagrams, data flow diagrams, class diagrams.
• Scripting and Programming for varied solutions.
• Constructing specifications and determine operational feasibility.
• Deploy programs and evaluate user feedback & experience on application deployment.
• Writing database script procedures, function & triggers.

• Must be well versed with software development lifecycle (SDLC) management with different project methodologies especially Agile methodology (Scrum).
• Strong Oops concepts, Entity Framework, Design Patterns bootstrap, Web/Windows Services knowledge.
• Working knowledge on C#, ASP.NET, MVC 4.0/5.0, LINQ, Javascript, JQuery, bootstrap, Web/Windows Services.
• Good to have knowledge of Angular JS.
• Must have worked on database like SQL Server/ MySQL.
• Working knowledge on google maps API or GIS would be an added advantage.

• 5-7 years of IT experience. B.E./B.Tech. in Computer Science/ IT or MCA would be preferred.
• Excellent oral and written communication skills.
• Candidate should hold 60% & above in 10th, 12th and Graduation

Primary Skill: Java Script

Secondary: HTML5,JS Library- React.js,React JS,User Experience Design

HTML, CSS, CSS3, JavaScript, Object Oriented JS, Angular JS, Ecma Script (ES6),React JS/Angular/TypeScript

Basic understanding of HTTP protocol, Web Application Design/Architecture

OOPS concept, JSON, AJAX

Knowledge of REST API

Basic understanding of Git

Basic understanding of client-server communication

Ready to take up challenges at work

Learning ability

Team spirit

Basic understanding of single page web application

Analytical Skills

Communication

Adaptability

Logical and Problem Solving