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Backend Engineer Interview Questions
15,491 backend engineer interview questions shared by candidates
They asked about my past projects and also about my experience working remotely during pandemic.
What do you know about Glovo?
What relational database are you familiar with using?
4 Challenges in Hackerrank
salary expectations
The values interview questions were all provided beforehand by the internal recruiter, to allow the candidate to prepare answers in advance for each point. The technical interview tasks were also provided beforehand, for the candidate to prepare for, and to allow the candidate to practice both parts if they so desired. The first technical interview task was to domain model for a situation. The second technical interview task was to write the backend ruby code for a different requirement.
Why do you wanna work with us?
Technical Screening: 1. JVM - Working and Heap 2. Datastructures - Arrays, HashTable, Stack, Queues 3. Time and Space complexity 4. Process and thread - difference and relation 5. Deadlock and concurrency 6. SOLID principles 7. Composition vs Inheritance - Relationship and when to use what 8. CICD - Process 9. Deployment Strategies 10. Minimizing bugs in production 11. Observability and logging - basics like what metrics to check etc. 12. Difference, advantages and disadvantages of Monolith and microservice archs 13. Avoiding cascading failures - Circuit breaker 14. Domain Driven Design 15. Sql vs NoSql - their advantages and disadvantage, when to use what 16. ACID 17. CAP theorem 18. Database scalability - vertical and horizontal scaling
90 mins. A spring boot hackerrank question. As soon as you log into the hackerrank test. You will get a GitHub URL. You can copy the URL and clone the repository in your local. You have to work on your local machine and keep pushing your commits to the repository. All the necessary POJOs, service implementation, and databases are in place I was asked to implement the following questions: 1. Implement a GET /hotel/{id} to retrieve a hotel by Id 2. Implement a DELETE /hotel/{id} to delete a hotel by Id. (It should not be actually deleted from the system but should be marked as 'deleted') 3. Search all the hotels closest to the city center. /search/{cityId}. The city object has latitude and longitude and the hotel object also has latitude and longitude. The distance between two can be calculated using the haversine formula, (The question says we can use the internet to calculate the haversine formula)
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