Software Developer - Tech Interview Questions and Answers

What is polymorphism. Difference between interface and abstract class

Wed, 15 Apr 2026 02:30:00 GMT

What is polymorphism. Difference between interface and abstract class

what tests did you develop for the testing team

Wed, 15 Apr 2026 02:30:00 GMT

what tests did you develop for the testing team

Wed, 15 Apr 2026 00:29:08 GMT

what tests did you develop for the testing team

Can you talk me through ... experience - C# .NET

Wed, 15 Apr 2026 02:30:00 GMT

Can you talk me through ... experience - C# .NET

Tell me about your previous experience - Java, React

Wed, 15 Apr 2026 02:30:00 GMT

Tell me about your previous experience

what sorting algorithm for 10 billion records

Fri, 10 Apr 2026 12:00:00 GMT

Imagine you have 100,000 files each containing 100,000 records on 100,000 distributed machines that you need to sort, what sorting algorithm would be the most efficient?

How would you choose the technologies for the project?

Fri, 10 Apr 2026 06:57:47 GMT

How would you choose the technologies for the project?

What are deadlocks and how to prevent them at design level?

Fri, 10 Apr 2026 12:00:00 GMT

What are deadlocks and how to prevent them at design level?

What is a decorator?

Fri, 10 Apr 2026 12:00:00 GMT

What is a decorator?

Explain what is OOP, init

Fri, 10 Apr 2026 12:00:00 GMT

Explain what is OOP, init

how would you implement DB index, why is it slow insert fast search

Fri, 10 Apr 2026 12:00:00 GMT

how would you implement DB index, why is it slow insert fast search

What types of requests are there in REST? HTTP vs HTTPS.

Fri, 10 Apr 2026 01:23:39 GMT

What types of requests are there in REST? HTTP vs HTTPS.

Follow up Questions to REST API Design

Thu, 09 Apr 2026 21:45:18 GMT

Follow up Questions to REST API Design

How do you design RESTAPI?

Thu, 09 Apr 2026 21:12:53 GMT

How do you design RESTAPI?

Scalability in System Design

Thu, 09 Apr 2026 21:12:51 GMT

Scalability in System Design

C# Interview Questions

Tue, 31 Mar 2026 21:59:04 GMT

C# Interview Questions

Tell me about a time you solved a complex technical problem independently.

Thu, 07 May 2026 03:29:09 GMT

Tell me about a time you solved a complex technical problem independently.

What attracted you to interview with us pb?

Thu, 07 May 2026 03:25:18 GMT

What attracted you to interview with us pb?

How do you use AI-assisted development tools in your workflow

Thu, 07 May 2026 03:22:26 GMT

How do you use AI-assisted development tools in your workflow

Walk us through your experience .NET Node.js Angular Typescript

Thu, 07 May 2026 03:19:50 GMT

Walk us through your experience .NET Node.js Angular Typescript

What is REST and what makes a good REST API

Fri, 24 Apr 2026 05:15:31 GMT

What is REST and what makes a good REST API

What is SOLID and can you give an example of each principle

Fri, 24 Apr 2026 05:15:30 GMT

What is SOLID and can you give an example of each principle

What design patterns have you used and when

Fri, 24 Apr 2026 05:15:29 GMT

What design patterns have you used and when

What is dependency injection and why is it important

Fri, 24 Apr 2026 05:15:29 GMT

What is dependency injection and why is it important

What is the difference between SQL and NoSQL and when would you use each

Fri, 24 Apr 2026 05:15:28 GMT

What is the difference between SQL and NoSQL and when would you use each

How would you design a system to handle large volumes of data

Fri, 24 Apr 2026 05:15:27 GMT

How would you design a system to handle large volumes of data

What is caching and what are the main strategies

Fri, 24 Apr 2026 05:15:26 GMT

What is caching and what are the main strategies

What is the difference between monolithic and microservices architecture

Fri, 24 Apr 2026 05:15:24 GMT

What is the difference between monolithic and microservices architecture

What's the difference between 3xx redirect codes

Fri, 24 Apr 2026 04:21:16 GMT

What's the difference between 3xx redirect codes

You call an API and get a 200 but the data is wrong — what do you do

Fri, 24 Apr 2026 04:21:15 GMT

You call an API and get a 200 but the data is wrong — what do you do

What are the three types of automated tests and when do you use each

Fri, 24 Apr 2026 04:21:13 GMT

What are the three types of automated tests and when do you use each

What's the difference between a mock, a stub, and a spy

Fri, 24 Apr 2026 04:21:12 GMT

What's the difference between a mock, a stub, and a spy

Your frontend shows a 403 error. How do you debug it

Fri, 24 Apr 2026 04:21:11 GMT

Your frontend shows a 403 error. How do you debug it

What is TDD and have you used it

Fri, 24 Apr 2026 04:21:09 GMT

What is TDD and have you used it

What makes a good unit test

Fri, 24 Apr 2026 04:21:08 GMT

What makes a good unit test

How do you test asynchronous code

Fri, 24 Apr 2026 04:21:07 GMT

How do you test asynchronous code

What is code coverage and should you aim for 100%

Fri, 24 Apr 2026 04:21:05 GMT

What is code coverage and should you aim for 100%

What is a regression test

Fri, 24 Apr 2026 04:21:04 GMT

What is a regression test

A test was passing yesterday and failing today — how do you debug it

Fri, 24 Apr 2026 04:21:02 GMT

A test was passing yesterday and failing today — how do you debug it

How would you add automated tests to a codebase that has none

Fri, 24 Apr 2026 04:21:01 GMT

How would you add automated tests to a codebase that has none

How would you test a REST API endpoint

Fri, 24 Apr 2026 04:20:59 GMT

How would you test a REST API endpoint

What's the difference between 401 and 403

Fri, 24 Apr 2026 04:18:51 GMT

What's the difference between 401 and 403

What's the difference between 404 and 410

Fri, 24 Apr 2026 04:18:49 GMT

What's the difference between 404 and 410

What's the difference between 500, 502, 503, and 504

Fri, 24 Apr 2026 04:18:48 GMT

What's the difference between 500, 502, 503, and 504

How would you handle HTTP errors in your code

Fri, 24 Apr 2026 04:18:47 GMT

How would you handle HTTP errors in your code

What is exponential backoff and when would you use it

Fri, 24 Apr 2026 04:18:46 GMT

What is exponential backoff and when would you use it

what is jitter in exponential backoff

Fri, 24 Apr 2026 04:18:44 GMT

what is jitter in exponential backoff

Walk me through the most common HTTP errors you've dealt with

Fri, 24 Apr 2026 04:18:42 GMT

Walk me through the most common HTTP errors you've dealt with

What are HTTP status codes and why do they matter

Fri, 24 Apr 2026 04:17:42 GMT

What are HTTP status codes and why do they matter

Software Developer - Tech Interview Questions and Answers

What is polymorphism. Difference between interface and abstract class

what tests did you develop for the testing team

what tests did you develop for the testing team

Can you talk me through ... experience - C# .NET

Tell me about your previous experience - Java, React

what sorting algorithm for 10 billion records

How would you choose the technologies for the project?

What are deadlocks and how to prevent them at design level?

What is a decorator?

Explain what is OOP, __init__

how would you implement DB index, why is it slow insert fast search

What types of requests are there in REST? HTTP vs HTTPS.

Follow up Questions to REST API Design

How do you design RESTAPI?

Scalability in System Design

C# Interview Questions

Tell me about a time you solved a complex technical problem independently.

What attracted you to interview with us pb?

How do you use AI-assisted development tools in your workflow

Walk us through your experience .NET Node.js Angular Typescript

What is REST and what makes a good REST API

What is SOLID and can you give an example of each principle

What design patterns have you used and when

What is dependency injection and why is it important

What is the difference between SQL and NoSQL and when would you use each

How would you design a system to handle large volumes of data

What is caching and what are the main strategies

What is the difference between monolithic and microservices architecture

What's the difference between 3xx redirect codes

You call an API and get a 200 but the data is wrong — what do you do

What are the three types of automated tests and when do you use each

What's the difference between a mock, a stub, and a spy

Your frontend shows a 403 error. How do you debug it

What is TDD and have you used it

What makes a good unit test

How do you test asynchronous code

What is code coverage and should you aim for 100%

What is a regression test

A test was passing yesterday and failing today — how do you debug it

How would you add automated tests to a codebase that has none

How would you test a REST API endpoint

What's the difference between 401 and 403

What's the difference between 404 and 410

What's the difference between 500, 502, 503, and 504

How would you handle HTTP errors in your code

What is exponential backoff and when would you use it

what is jitter in exponential backoff

Walk me through the most common HTTP errors you've dealt with

What are HTTP status codes and why do they matter

Explain what is OOP, init