Sr. MERN Stack (Freelance Interviewer)

Experience: 8+ Years

Location: Remote

Skills Required:

1. Core MERN Stack Skills:

• MongoDB: Schema design, indexing, and aggregation.
• Express.js: RESTful APIs, routing, middleware, and authentication.
• React.js: Advanced React features like hooks, context API, state management (Redux, Zu stand).
• Node.js: Asynchronous programming, real-time features (Web Sockets), and API development.

2. JavaScript & TypeScript:

• JavaScript (ES6+): Deep understanding of modern JavaScript (ES6+ features such as let, const, arrow functions, destructuring, async/await).DOM manipulation, event handling, and JavaScript modules.
• TypeScript:
• Strong TypeScript skills for building type-safe applications. Interface and type declarations, generics, type inference, and utility types.
• TypeScript in a React ecosystem (React with TypeScript for components and hooks).
• TypeScript with Node.js for backend APIs.

3. Micro-Frontend Architecture:

• Micro-Frontend Frameworks: Module Federation (Webpack), Single-SPA, Mosaic.
• Component-Based Design: Reusable, independently deployable frontend services.
• Communication Between Micro-Frontends: Managing global state and communication across frontend boundaries.

4. CSS Development:

• Responsive Design: Mastery of CSS Flexbox, Grid, and responsive media queries.
• Preprocessors: Sass/SCSS for modular CSS.
• CSS-in-JS: Experience with libraries like Styled Components or Emotion.
• Utility-First CSS: Tailwind CSS or similar frameworks for rapid UI development.

5. Next.js (React Framework):

• Server-Side Rendering (SSR): Building SSR pages for SEO benefits and faster initial loads.
• Static Site Generation (SSG): Pre-rendering pages using getStaticProps and getStaticPaths.
• Dynamic Routing: Handling dynamic routing using Next.js built-in routing system.
• API Routes: Developing serverless APIs using Next.js API routes.
• Performance Optimization: Image optimization, lazy loading, and code splitting.

6. Version Control & Collaboration:

• Git/GitHub/GitLab: Branching, pull requests, and code review.
• CI/CD Pipelines: Automated testing and deployment using Jenkins, GitLab CI, or similar tools.

7. DevOps & Cloud Services (Optional):

• Docker: Containerizing applications for consistency and scalability.
• Cloud Providers: Experience with AWS, Google Cloud, or Azure.
• Summary of Skills: MERN Stack: MongoDB, Express.js, React.js, Node.js
• JavaScript & TypeScript: ES6+ features, TypeScript types, generics, React with TypeScript, Node.js with TypeScript
• Micro-Frontend Architecture: Module Federation, Webpack, Single-SPA
• CSS: Sass/SCSS, Tailwind CSS, Styled Components, BEM
• Next.js: SSR, SSG, API Routes, Performance Optimization, Vercel Deployment
• Version Control: Git, GitHub/GitLab
• DevOps/Cloud (Optional): Docker, AWS/Azure