Software Engineer Senior Java Developer Interview Questions

411 software engineer senior java developer interview questions shared by candidates

How Do you implement observer design pattern? Which design patterns do you know? Which are the collections interfaces? Given the fibonacci sequence array, sort the array with all the odd numbers at the begining and the non even numbers at the end. Don’t use any temp array.
avatar

Senior Java Software Engineer

Interviewed at EPAM Systems

4
Aug 11, 2021

How Do you implement observer design pattern? Which design patterns do you know? Which are the collections interfaces? Given the fibonacci sequence array, sort the array with all the odd numbers at the begining and the non even numbers at the end. Don’t use any temp array.

1. How Java memory works 2. What we get NullPointerException 3. Program to get factorial using iteration and recursion(discussion around edge case writing code etc.) 4. Explain Volatile, Synchronized & AtomicInteger 5. Why use kafka vs SQS 6. Performance optimization

Senior Software Engineer - JAVA

Interviewed at STG Labs

4.5
Jun 8, 2026

1. How Java memory works 2. What we get NullPointerException 3. Program to get factorial using iteration and recursion(discussion around edge case writing code etc.) 4. Explain Volatile, Synchronized & AtomicInteger 5. Why use kafka vs SQS 6. Performance optimization

Viewing 131 - 140 interview questions

Glassdoor has 411 interview questions and reports from Software engineer senior java developer interviews. Prepare for your interview. Get hired. Love your job.