C#

What types of table joins are you familiar with in SQL?

What strings are stored in the string pool in Java?

Can you show an example of using LINQ to perform queries on a collection?

Could you list the main types of classes in object-oriented programming?

How would you rate your C# language skills on a scale from 1 to 10?

Can you explain what the MassTransit library is and how it is used for message exchange in distributed systems?

Explain the concept of the third normal form in relational databases and why it is needed.

Do you work with message broker systems?

Have you had experience using SignalR technology for real-time implementation in your projects?

What ways implement the IEnumerable interface in the programming language?

What is the main functionality implemented by the IList interface in .NET and in what scenarios is its use justified?

How is the lifespan of an object determined after it is injected via Dependency Injection?

Junior — Middle

OZON

Can you explain what Flutter is and what it is used for?

What is the meaning of the letter 'I' in the SOLID principles, and what is its purpose in object-oriented programming?

Какова роль оператора throw внутри блока catch в обработке исключений?

Explain the principles and mechanisms of the automatic memory management system in your programming language environment.

Where in the code or system is the variable var usually located?

Junior — Middle

IT One

Can you explain what CORS is and why it is needed in web development?

Junior — Middle

Aston

Explain the concept of synchronization context and its role in multithreaded programming.

What are the main differences between an interface and a class in object-oriented programming?