ReactJS Developer

Long Business Systems, Inc.; Chennai District; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Long Business Systems, Inc. is seeking a talented ReactJS Developer with 5–7 years of experience to build modern, scalable web applications in Chennai, India. You will design, develop, and maintain responsive UIs and integrate with backend services.

You will collaborate with Product Managers, UX Designers, Backend Developers, QA Engineers, and DevOps to ensure high performance and quality. The role emphasizes state management, architecture discussions, and Agile sprint participation.

Qualifications

• 5–7 years of ReactJS development experience.
• Experience integrating with backend services and REST APIs.
• Strong focus on responsive, scalable UI development.
• Experience with state management and modern frontend architectures.
• Familiarity with cloud basics (AWS, GCP).
• Understanding of security concepts (JWT, OAuth).
• Knowledge of testing frameworks and modern tooling.

Responsibilities

• Design, develop, and maintain responsive web applications using ReactJS.
• Build reusable UI components and libraries.
• Translate UI/UX designs into pixel-perfect interfaces.
• Integrate frontend with REST APIs and backend services.
• Optimize performance, scalability, and UX.
• Implement state management with Redux/Context/Zustand.
• Collaborate across product, UX, backend, QA, and DevOps.
• Participate in architecture discussions and code reviews.
• Troubleshoot production issues and deliver timely fixes.
• Follow frontend best practices, coding standards, and security guidelines.
• Contribute to Agile/sprint activities.

Skills

ReactJS

React Hooks

Functional Components

Component Lifecycle

HTML5

CSS3

SCSS

Bootstrap

Material UI

Tailwind CSS

Responsive Design

Redux

Context API

Zustand

JWT

OAuth

Frontend Architecture

Micro Frontend

JavaScript Testing

Git

CI/CD

NPM / Yarn

Webpack / Vite

Jest

RTL / Cypress / Playwright

GraphQL

WCAG / Accessibility

Cloud Basics (AWS, GCP)

Monitoring / Analytics

POS / E-commerce domain

Education

Bachelor's or Master's degree in Computer Science, Information Technology, Engineering, or a related field

Tools

Git

CI/CD pipelines

NPM

Yarn

Webpack

Vite

Jest

React Testing Library

Cypress

Playwright

Job description

We are seeking a talented and passionate ReactJS Developer with 5 to 7 years of experience in building modern, scalable, and highly responsive web applications.

The ideal candidate will have integration with backend services.

Key Responsibilities

• Design, develop, and maintain responsive and scalable web applications using ReactJS.
• Build reusable, maintainable, and high-performance UI components.
• Translate UI/UX designs into functional, pixel-perfect user interfaces.
• Integrate frontend applications with REST APIs and backend services.
• Optimize application performance, scalability, and user experience.
• Implement state management solutions using Redux, Context API, Zustand, or similar frameworks.
• Collaborate with Product Managers, UX Designers, Backend Developers, QA Engineers, and DevOps teams.
• Participate in architecture discussions, code reviews, and technical design sessions.
• Troubleshoot production issues and deliver timely resolutions.
• Follow frontend development best practices, coding standards, and security guidelines.
• Contribute to Agile development processes and sprint activities.

Required Technical Skills

Frontend Development

• Strong hands-on experience with ReactJS.
• Experience with React Hooks, Functional Components, and Component Lifecycle concepts.
• Strong understanding of HTML5, CSS3, SCSS, Bootstrap, Material UI, Tailwind CSS, or similar frameworks.
• Experience developing responsive and mobile-friendly applications.

State Management & API Integration

• Experience with Redux, Context API, Zustand, or equivalent state management solutions.
• Knowledge of API security and authentication concepts such as JWT and OAuth.

Frontend Architecture

• Experience building modular and reusable component libraries.
• Understanding of frontend design patterns and application architecture.
• Familiarity with Micro Frontend concepts is a plus.
• Strong debugging and performance optimization skills.

Development Tools

• Experience with Git and modern source control practices.
• Familiarity with CI/CD pipelines.
• Experience with npm, yarn, webpack, Vite, or similar build tools.
• Knowledge of testing frameworks such as Jest, React Testing Library, Cypress, or Playwright.

Required

Basic understanding of cloud platforms:

• AWS
• GCP

Good to Have

• Experience deploying frontend applications in cloud environments.
• Knowledge of CDN, caching, and frontend performance monitoring.

Good-to-Have Skills

• Exposure to Golang (Go) backend development.
• Knowledge of .NET / C# applications and API integration.
• Understanding of backend architecture and microservices concepts.

Database Knowledge

• Familiarity with PostgreSQL.
• Familiarity with Microsoft SQL Server (MSSQL).
• Understanding of relational databases and basic query writing.

Additional Skills

• Knowledge of Microservices-based ecosystems.
• Experience with GraphQL.
• Understanding of accessibility (WCAG) standards.
• Experience with monitoring and analytics tools.
• Exposure to POS, Retail, Payments, or E-commerce domains.

Educational Qualifications

Bachelor's or Master's degree in Computer Science, Information Technology, Engineering, or a related field.

Preferred Candidate Profile

• Strong UI development and problem-solving skills.
• Ability to work independently and own frontend deliverables end-to-end.
• Strong communication and collaboration skills.
• Experience working in Agile/Scrum environments.
• Ability to mentor junior developers and contribute to frontend best practices.

POS Domain Advantage

Candidates with experience in the following areas will be preferred: