Here’s a detailed 6-week backend interview preparation plan tailored for 3 years of experience:
📅 Week 1: Data Structures & Algorithms (DSA) - Foundations
📌 Focus Areas:
-
Arrays & Strings: Sliding Window, Two Pointers, Prefix Sum, Kadane’s Algorithm.
-
Linked Lists: Fast & Slow Pointers, Cycle Detection, Reversal, Merging.
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Stacks & Queues: Monotonic Stack, Min Stack, Queue using Stack, LRU Cache.
🔹 Action Plan:
📅 Week 2: DSA - Advanced Topics
📌 Focus Areas:
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HashMaps & Heaps: Top-K problems, Anagrams, LRU Cache.
-
Trees & Graphs: DFS, BFS, Binary Trees, Trie.
-
Dynamic Programming (DP): Knapsack, Fibonacci, Subsequence problems.
🔹 Action Plan:
📅 Week 3: System Design (LLD & HLD)
📌 Focus Areas:
-
Low-Level Design (LLD): OOP, SOLID, Design Patterns (Singleton, Factory, Observer).
-
High-Level Design (HLD): Scaling, Database Design, Load Balancing.
🔹 Action Plan:
| Day |
Topic |
Task |
| 15 |
OOP & SOLID |
Study SOLID principles and OOP best practices
|
| 16 |
Design Patterns |
Learn Singleton, Factory, Observer, MVC
|
| 17 |
HLD Basics |
Read Scalability, Load Balancing, Caching
|
| 18 |
Database Design |
Learn Normalization, Indexing, Partitioning, Sharding
|
| 19 |
HLD - Distributed Systems |
Study Kafka, Redis, Microservices
|
| 20 |
Mock Design Interview |
Design URL Shortener, Rate Limiter
|
| 21 |
Revise & Notes |
Write down key takeaways |
📅 Week 4: Backend Tech Stack
📌 Focus Areas:
-
Databases: SQL & NoSQL, Transactions, Indexing, Query Optimization.
-
Caching & Message Queues: Redis, Kafka.
- Microservices & API Design.
🔹 Action Plan:
| Day |
Topic |
Task |
| 22 |
SQL & Indexing |
Study B-Trees, Query Optimization, Joins
|
| 23 |
NoSQL (MongoDB) |
Learn Document Stores, Replication, CAP Theorem
|
| 24 |
Redis & Caching |
Study LRU Cache, Expiry Policies
|
| 25 |
Message Queues (Kafka) |
Learn Pub-Sub Model, Consumer Groups
|
| 26 |
Microservices |
Study Inter-Service Communication, API Gateway
|
| 27 |
API Design |
Learn REST vs GraphQL, Rate Limiting, Authentication
|
| 28 |
Mock API Design Interview |
Design E-commerce API
|
📅 Week 5: DevOps & Cloud
📌 Focus Areas:
- Docker & Kubernetes.
- AWS / GCP / Azure Basics.
- CI/CD & Logging.
🔹 Action Plan:
| Day |
Topic |
Task |
| 29 |
Docker |
Learn Containerization, Docker Compose
|
| 30 |
Kubernetes |
Study Pods, Services, Ingress, Helm
|
| 31 |
AWS (EC2, S3, RDS) |
Learn Cloud Basics
|
| 32 |
CI/CD (Jenkins, GitHub Actions) |
Study Deployment Pipelines
|
| 33 |
Logging & Monitoring |
Learn ELK Stack, Prometheus
|
| 34 |
Mock DevOps Discussion |
Interview questions on DevOps |
| 35 |
Revise & Notes |
Document learning |
📅 Week 6: Mock Interviews & Final Touches
📌 Focus Areas:
- Mock Interviews (DSA, System Design, Backend Tech).
- Behavioral Questions.
- Revisiting Weak Topics.
🔹 Action Plan:
| Day |
Topic |
Task |
| 36 |
Mock DSA Interview |
Solve 3 medium-hard problems in 1 hour
|
| 37 |
Mock System Design Interview |
Discuss Scalable Service
|
| 38 |
Mock Backend Tech Interview |
Answer DB, Caching, API Design Qs
|
| 39 |
Behavioral Prep |
Prepare for HR & Culture Fit
|
| 40 |
Weak Topics Review |
Revise mistakes from mock tests
|
| 41 |
Revise Notes & Interview Strategies |
Summarize concepts & patterns
|
| 42 |
Final Mock Interview |
Simulate full backend interview round
|
🔹 Bonus Tips
✅ Mock Interviews: Use Pramp, Interviewing.io, Leetcode Mock.
✅ Resume: Focus on impactful backend projects.
✅ HR & Behavioral: Prepare STAR method answers (Situation, Task, Action, Result).
✅ Network on LinkedIn for referrals.
This 6-week plan ensures comprehensive preparation for a backend role with 3 years of experience. If you want a custom plan based on your weak areas, let me know! 🚀
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