Tell about your practical experience in solving technical problems.

In my practice, I have dealt with performance optimization tasks for Java applications, such as improving database interactions through caching and query optimization. I also addressed multithreading issues using synchronization and classes from java.util.concurrent to prevent data races. In projects, I applied design patterns to enhance code readability and maintainability, such as Singleton and Factory. I frequently worked with REST API, implementing controllers and services on Spring Boot, as well as configuring exception handling and logging.