Java Backend Interview Prep (1 Session – 90 mins)

Designed for Java backend engineers aiming to crack interviews with strong fundamentals and real-world understanding.

Best suited for 1–5 years experience, and useful for experienced developers looking to revise and sharpen concepts.

A structured 20-session plan covering Core Java, Spring Boot, Databases, Microservices, and Kafka, focused on real interview questions and practical scenarios.

Module 1: Core Java (Sessions 1–5)

Focus: Strong fundamentals + interview depth

• Session 1: OOP concepts (deep) + interview questions
• Session 2: Collections (internal working, HashMap, concurrent collections)
• Session 3: Multithreading, concurrency, synchronization, Executor framework
• Session 4: JVM, Memory Management, Garbage Collection
• Session 5: Java 8+ (Streams, Lambdas, Optional) + Immutability + coding questions

Module 2: Spring Boot (Sessions 6–10)

Focus: Real-world backend + interview scenarios

• Session 6: Spring fundamentals, Bean lifecycle, Dependency Injection
• Session 7: Spring Boot internals, auto-configuration, project structure
• Session 8: REST APIs, Exception Handling, Validation (best practices)
• Session 9: Spring Data JPA + Transactions (real DB scenarios)
• Session 10: Spring Security, JWT, OAuth2 basics

Module 3: Databases (Sessions 11–13)

Focus: SQL + performance

• Session 11: SQL fundamentals + Joins + interview queries
• Session 12: Indexing, Query Optimization
• Session 13: Transactions, Locking, Isolation levels + NoSQL basics

Module 4: Microservices (Sessions 14–16)

Focus: Practical understanding

• Session 14: Microservices architecture, Service Discovery, Config Server
• Session 15: API Gateway, Feign Client, Resilience4j (Circuit Breaker)
• Session 16: Saga Pattern + Event-driven architecture

Module 5: Kafka & Messaging (Sessions 17–18)

Focus: Crisp + interview-oriented

• Session 17: Kafka fundamentals (Topics, Partitions, Producers, Consumers)
• Session 18: Offsets, Consumer Groups, delivery semantics + Spring Kafka + real scenarios

Module 6: Mock Interviews (Sessions 19–20)

• Session 19: Full Mock Interview (Core Java + Spring + DB + Microservices)
• Session 20: Full Mock Interview + detailed feedback + improvement plan

You can book one session at a time (₹600 per 90 mins).

To complete the full 20-session program, you need to book sessions multiple times.

Discussion language: Hindi+English