Questions are not too hard, and not too easy. Overall, actually they are in a reasonable level. However, a preparation is required to answer all those questions in that limited time.
I applied online. The process took 2 weeks. I interviewed at Telenity (Istanbul) in Apr 2021
Interview
Technical test on browser about java, sql and linux.
HR interview(know each other).
Technical interview with senior engineer(s).
Small coding task with a few questions to learn your coding style and approach for issues.
Interview questions [1]
Question 1
Questions about ORM, db-app connections, data structures, SOLID & DI, REST and SOAP and questions about your background(previous jobs)