ReactJS 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.
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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

We are seeking a skilled Senior UI Developer to join our dynamic team. The ideal candidate will have extensive experience in designing and developing user-friendly, visually appealing, and responsive web interfaces. You will work closely with UX designers, backend developers, and product managers to translate design concepts into functional UI components while ensuring high performance, scalability, and accessibility.

Key Responsibilities:

Design and develop scalable, responsive, and performant user interface components.

Define and enforce UI coding standards, best practices, and guidelines.

Collaborate with UX designers to translate wireframes and prototypes into high-quality code.

Work closely with product managers to understand requirements and translate them into technical solutions.

Mentor and coach UI developers, providing guidance and support on technical challenges.

Conduct code reviews to ensure code quality, performance, and adherence to design principles.

Stay updated with the latest UI trends, technologies, and best practices.

Drive innovation and continuous improvement within the UI development process.

Required Skills and Qualifications:

Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent work experience).

Proven experience (>8 years) as a UI developer with expertise in HTML5, CSS3, JavaScript/TypeScript

Proven experience in front-end frameworks React (must), Angular(good to have), Vue.js(good to have).

Solid understanding of responsive web design, accessibility, and cross-browser compatibility.

Strong problem-solving skills and ability to troubleshoot complex issues.

Excellent communication skills with the ability to collaborate effectively with cross-functional teams.

Experience with version control systems (e.g., Git) and CI/CD pipelines.

Experience with UI testing frameworks and tools (e.g., Jest, Cypress) is a plus.

Knowledge of UX design principles and familiarity with UX design tools (e.g., Sketch, Adobe XD) is desirable.

Ability to prioritize and manage multiple tasks in a fast-paced environment. Experience building a UI for multi-tenant SaaS platform. Experience building UI with user level customization, feature flags Experience optimizing for performance and faster Time To Frist Byte and streaming.

We are looking for a Senior UI Developer who is expert in React and good to have other frameworks like Angular etc (but not a must) and who can guide the rest of the UI team and interface with cross functional teams

Job Types: Full-time, Permanent

About Company

ADDV HealthTech Solutions, a UK-based company, operates with a strong IT presence in Ahmedabad, empowering IT professionals and organizations with cutting-edge technologies. As a product and service-based industry, we have excelled in managing UK healthcare projects, leveraging our novel tech-led approach.

ADDV HealthTech Solutions operates as a subsidiary of the renowned UK company, ADDVantage Technologies (https://addvantage-technologies.co.uk/) delivering innovative healthcare solutions like AllDayDr, Healthya, AppLocum, PharmSmart, ADDVantage Minds, and HEALTHYA Stations. Under the visionary leadership of our Founder and CEO, Suhel Ahmed, we continue to expand our expertise and presence across the UK and the Middle East.

What are we looking for in a candidate?

● 3-5 years of experience in frontend development.

● Proficient understanding of web markup, including HTML5 and CSS3.

● Basic understanding of server-side CSS pre-processing platforms, such as LESS and SASS

● Proficient understanding of client-side scripting and JavaScript frameworks, including jQuery

● Strong knowledge of JavaScript and its frameworks, such as AngularJS or React.

● Good understanding of asynchronous request handling, partial page updates, and AJAX

● Experience with responsive design and frameworks like Bootstrap.

● Proficient understanding of cross-browser compatibility issues and ways to work around them.

● Basic understanding of React.js and its core principles (optional but preferred).

● Familiarity with version control systems (e.g., Git).

● Excellent problem-solving and communication skills.

What will a candidate be doing with us?

● Develop and maintain user-facing features for web applications.

● Build reusable code and libraries for future use.

● Ensure the technical feasibility of UI/UX designs.

● Optimize applications for maximum speed and scalability.

● Collaborate with other team members and stakeholders.

What will we provide to the candidate?

● 5 days working

● Flexible working hours

● Training and Development Opportunities

● Collaborative work environment

● Working with International teams

React JS & AWS

• Proficient working knowledge of React JS,Redux, ES6, Node JS, VSCode, ES Lint, HTML5, CSS3, Javascript, jQuery, Bootstrap 4
• Ability to learn and adapt on customer expectations
• Passion for user experience and user - centric development
• Strong communication skills that include leading design - related conversations, ability to build and nurture good relationships and foster an environment for collaboration
• Self - starter and passionate learner
• Creative problem - solver with a strong eye for detail
• Experience with version and source control, preferably Git Lab
• Should have knowledge on micro services.
• Overall experience between 4 yrs to 8 yrs.

• Great skills in HTML, CSS, JavaScript and cross browser implementations.
• Strong analytical and problem-solving skills.
• Experience and knowledge about React.js and Next.js
• Strong understanding of how SSR (Server Side Rendering) works.
• Taking figma/zepline files from designers, slicing and/or recreating elements via CSS to match the design perfectly
• Ability to make modifications to libraries as per requirement of a project
• Extensive knowledge of fonts, embedding from third parties like Google, Typekit & Font Deck etc. Knowledge of optimizing CSS/JavaScript performance, coding practices and tools.
• Passion and follow through for their work. Excited and curious about learning new technology, as well as the sharing of ideas. Exceptional collaboration, listening, written, and verbal communication. Able to own individual projects as well as the ability to work within a team.
• Awareness of current design trends in the visual arts, working knowledge of the latest computer packages and an understanding time limits which can impact on the design.
• Knowledge of GIT or any other version control software.

• Good experience on Next.js, with great css skills.
• Should also know the latest strategies available on Next.js v12.