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Deloitte Interview
Java Software Engineer II
Process Overview
- 4.7 years of experience
Interview Rounds Breakdown
Technical Round 1
Core JavaSpring BootMicroservicesKafkaSystem DesignDSA
The interview covered a broad spectrum of backend technologies, emphasizing deep knowledge of Java 8 features and Spring framework internals.
The candidate was expected to explain architectural patterns like Saga and Circuit Breaker in the context of microservices.
The interviewer probed into distributed systems concepts, specifically focusing on database scaling, partitioning, sharding, and distributed transaction management.
The session included a mix of theoretical conceptual questions and practical implementation scenarios for Kafka and Spring Security.
The candidate was tested on fundamental Java execution flow and logging standards.
Questions Asked
Explain Java 8 CompletableFuture and its use cases.
Java 8
Suggested Answer
CompletableFuture is a class in Java 8 that provides a way to perform asynchronous programming. It allows for non-blocking code execution by chaining tasks using methods like thenApply, thenAccept, and thenCompose, making it ideal for handling I/O-bound operations without blocking the main thread.
Difference between map() and flatMap().
Java 8
Key Takeaways & Advice
Candidate Advice
- Focus on both theoretical depth and practical implementation details of the technologies listed on the resume.
- Be prepared to explain the 'why' behind architectural choices in previous projects.
- Ensure a strong grasp of distributed system fundamentals as they are critical for senior-level backend roles.
Preparation Tips
- Review Core Java and Java 8 features thoroughly.
Final Verdict
The result for this interview is still pending.