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9,196 backend developer interview questions shared by candidates

What are the design patterns I used? Did I do deployments in my earlier experiences? Why this approach to the problem was chosen over another? ( given a scenario) Software testing fundamentals and principles. Github Action and CI/CD pipeline. Kubernetes architecture and deployments. Hexagonal Software Architecture
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Senior Backend Developer

Interviewed at Notch

3.5★
Oct 3, 2021

What are the design patterns I used? Did I do deployments in my earlier experiences? Why this approach to the problem was chosen over another? ( given a scenario) Software testing fundamentals and principles. Github Action and CI/CD pipeline. Kubernetes architecture and deployments. Hexagonal Software Architecture

1. What is difference between Array and LinkedList. Tell me 2 cases where i can use array and linked list and How it will benefit ? 2. What is HTTP and What is technical difference between GET and POST method ? 3. Find Kth Largest Element of a given Array. What is time complexity of merge sort and how does it come, derive it ? 4. What is the TC of PriorityQueue(insert, get, delete) and How does it come. How does its internal work ? 5. What you can modify MinPriorityQueuq into MaxPriorityQueue. What is comparator and What is lambda function and what does lambda function signify and benefits ? 6. Given 2 Table : Table A = [ID, Name] Table B = [RefId, Value] Now, RefId is the Id of Table A. Now I have a RefId, I have given RefID and I want Name from Table A. Then Write the Syntax for this query. 8. What is PolyMorphism. Tell me about Overloading and overriding and where can i use it. And how will it benefits us ? 9. What is SOLID Principal and explain each.
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Backend Developer

Interviewed at ninjacart

3.5★
Mar 21, 2024

1. What is difference between Array and LinkedList. Tell me 2 cases where i can use array and linked list and How it will benefit ? 2. What is HTTP and What is technical difference between GET and POST method ? 3. Find Kth Largest Element of a given Array. What is time complexity of merge sort and how does it come, derive it ? 4. What is the TC of PriorityQueue(insert, get, delete) and How does it come. How does its internal work ? 5. What you can modify MinPriorityQueuq into MaxPriorityQueue. What is comparator and What is lambda function and what does lambda function signify and benefits ? 6. Given 2 Table : Table A = [ID, Name] Table B = [RefId, Value] Now, RefId is the Id of Table A. Now I have a RefId, I have given RefID and I want Name from Table A. Then Write the Syntax for this query. 8. What is PolyMorphism. Tell me about Overloading and overriding and where can i use it. And how will it benefits us ? 9. What is SOLID Principal and explain each.

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