✅ Day-by-Day Technical Interview Prep Plan
🟧 Day 1 – Backend: Node.js & Express
🔹 Topics to Learn:
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Event loop & async programming
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Callbacks, Promises, async/await
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Express.js basics (routing, middleware, request/response)
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Global error handling
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JWT authentication
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Rate limiting, CORS, Helmet
🔹 Practice:
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Create a simple CRUD API with Express
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Add JWT-based login system
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Handle async errors globally
🟦 Day 2 – Frontend: React.js
🔹 Topics to Learn:
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JSX, Components, Props, State
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React Hooks:
useState,useEffect,useMemo,useCallback -
Conditional rendering, forms, and lifting state
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React Router DOM basics
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Performance optimization (memo, lazy, Suspense)
🔹 Practice:
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Build a to-do app with routing and useEffect
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Create a controlled form and validate input
🟩 Day 3 – Database: MongoDB & Redis
🔹 Topics to Learn:
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MongoDB schema design (embedded vs reference)
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CRUD operations
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Aggregation pipelines
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Indexing and performance optimization
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Mongoose validation & population
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Redis basics (caching, pub/sub, expiry)
🔹 Practice:
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Design a schema for blog posts and comments
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Use Redis to cache API results
🟨 Day 4 – System Design (High-Level)
🔹 Topics to Learn:
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RESTful API design
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Scalability basics: Load balancer, DB sharding, Caching
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Microservices vs monolith
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Stateless services
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Rate limiting, retries, queues
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API Gateway & reverse proxy (Nginx)
🔹 Practice:
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Design a simple architecture: "Design a URL Shortener"
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Identify bottlenecks and add caching, DB indexing, etc.
🟥 Day 5 – JavaScript Coding & DSA
🔹 Topics to Learn:
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Array and string manipulation
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HashMap, Set, Stack, Queue
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Time and space complexity
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Closures, hoisting, scope
🔹 Practice Problems:
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First non-repeating character
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Group anagrams
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Find missing number in array
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Debounce vs Throttle implementation
🟪 Day 6 – Real Interview Simulation
🔹 Topics to Cover:
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Mock technical questions from backend, frontend, database
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1 DSA question (live coding)
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1 system design problem (whiteboard-style)
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2 behavior questions (teamwork, conflict)
🔹 Practice:
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Explain: “How do you handle large traffic on Node backend?”
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Explain: “How did you scale a system at work?”
⬛ Day 7 – Resume & Mock HR Round + Review
🔹 Topics:
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Review full profile
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Final touch on resume, LinkedIn
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Prepare 3 project stories with challenges + outcomes
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Common HR Q&A refresh
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Salary negotiation strategy
🔹 Practice:
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Mock HR round with me
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Prepare for “Tell me about yourself,” “Why change?” and “Strengths”
✅ Let’s Start With a Full-Stack Interview Plan (Daily Topics)
| Day | Focus | Topics |
|---|---|---|
| Day 1 | Backend | Node.js (Express, async/await, middlewares, error handling) |
| Day 2 | Frontend | React.js (Hooks, lifecycle, state management, rendering) |
| Day 3 | Database | MongoDB (Indexing, Aggregation, Relationships, Schema Design) |
| Day 4 | System Design | Basics + Design scalable APIs |
| Day 5 | Coding Round Prep | JavaScript/TypeScript DSA (Array, String, Map, Set, Promise) |
| Day 6 | Real-time Round | Practice full-stack questions with sample answers |
| Day 7 | Mock Interview & Review | I’ll simulate a real HR + Tech round |