C#

What are the advantages of using the 'using' block in C#?

What is the main purpose of the Outbox pattern in system architecture?

How do JOIN operators work in SQL?

How does the asynchronous method work in C#?

What is multithreading, what tasks does it solve, and what synchronization primitives do you know? How does SemaphoreSlim differ from Semaphore and what is a Mutex?

Can you name the most common index types used in database management systems?

How does simultaneous access of multiple threads to shared variables in an application affect it?

How can a one-to-one relationship between two entities be implemented?

What tools or libraries have you used for implementing HTTP requests at your previous job?

Is it possible to initiate background operation execution inside a controller using Task.Run and continue processing the request?

Can you explain what MS SQL Server is and what its main functions are?

What is the difference between a static method and an instance method?

Is it possible to declare a class inside a function or another block and place it on the stack?

Junior — Middle

IT One

Can you explain how ManualResetEvent works and its purpose in programming?

Why should the GetHashCode method be overridden in a class?

Junior — Middle

OZON

Whom among well-known specialists in your field do you personally respect or consider a role model?

Can you explain what is meant by a one-to-one relationship in the context of databases or object-oriented programming?

Junior — Middle

Andersen

What might motivate management to set extremely tight project deadlines?

Is there a difference in behavior if I pass a number or an object as a parameter?

Have you worked with distributed computing system architecture?