Java

What are constraints in SQL?

What is the difference between Mono and Flux in reactive programming?

What object-oriented programming principle do generics implement?

Who checked and evaluated the tasks assigned at your previous workplace?

Junior — Middle

Северсталь-Ифоком

Are there registered users in the current project?

How should the data type be correctly updated in an existing database table?

Junior — Middle

Иннотех

Can you tell how tasks were assigned to you in your previous job and how it was done?

Junior — Middle

СБЕР

What does the '*' symbol mean in the SELECT statement when executing an SQL query?

What are the access speeds to elements in HashMap during basic operations?

Share your discussion of your previous professional projects and your contribution to them

Junior — Middle

СБЕР

Can you explain how to use the synchronized keyword for thread synchronization?

What is the time complexity of searching for an element by key in a TreeMap data structure?

Junior — Middle

IT One

What is your experience with conducting and participating in code review processes?

What is the difference between replication and sharding?

Can you list the methods of the Serializable interface in Java?

What design patterns are implemented in the Spring Framework?

How were attachments (files, photos, videos) stored in applications?

What are the disadvantages of using design patterns?

What actions will you take to implement the report deletion feature from the system?

What is the role and main functions of the Spring Boot Actuator component in Spring-based applications?

Junior — Middle

СБЕР