I design the component architecture based on a chosen frontend framework, plan a hierarchy of reusable components, and differentiate between smart and dumb components for better reusability and maintainability. When implementing these components, I adhere to design specifications and usability standards, use TypeScript for efficient coding, and ensure modularity and adherence to the Single Responsibility Principle.

When choosing a State Management Library, I select an appropriate library like Redux for React, design the state structure considering how data will flow through the application, and determine which data should be managed globally, such as user authentication status, and which can be local to components.

In UI/UX Design Integration, I select a suitable CSS framework or CSS-in-JS solution, implement responsive design techniques using media queries, flexible grids, and responsive units to ensure compatibility across devices, and establish a consistent theme with customization options through a theming system.

In Backend Integration, I utilize libraries like Axios or Fetch for API calls, implement data fetching strategies to retrieve and display data, update the application state based on API responses, and ensure robust error handling for user-friendly error messages and effective debugging.

In Database Design and Integration, I select a suitable database type based on the application's needs, design database schemas with defined tables and relationships, and utilize ORM or ODM tools for efficient database interactions.

In API Development, I implement API endpoints, choosing between RESTful APIs or GraphQL based on project needs, define routes for different functionalities, and implement controllers to handle requests and responses, with middleware used for tasks like logging, authentication, and error handling.

In Authentication and Authorization, I implement user authentication using methods like JWT and OAuth, and establish role-based access control to define user roles and permissions, ensuring secure access to different parts of the application.

In Business Logic development, I code the business logic and services to manage application processes, create a service layer for encapsulating business logic for reusability and testability, and implement utility functions for common tasks like data formatting and validation.