Veeam Software interview questions

Process was very messy. Got invited for online assessment by the Recruiter. My result was not accepted initially and got rejected by email, the recruiter went silent after that. Despite that I received an AI-generated message from same recruiter saying how interesting my profile looks to them and that they want me in their recruitment process. This time, after completing the test again, got invited to an interview. Interview consisted mostly from same topics as the test(problem-solving around parallelization and concurrency, networks, modern C++), so I answered them perfectly. By the end of an interview I learned that there would be a 2nd technical round with the manager. Despite the said Recruiter telling me before, when I asked about the process: "there will be only one interview and that's all". I got an email reply in a week, that was for sure carefully written by a person and not generated, saying that I have made 2 mistakes on questions, which were definitely made up, since I remember that I answered them correctly. While they also mentioned how good I fit the role and how they value my experience highly, but because of said errors they cannot proceed with me. All in all - the process was very messy, feedback - unjustified. Besides that - the interviewers have suggested to communicate in russian, which I declined. As it seems - most of communication is done in russian there. While asking the interviewers "how do you like working at Veeam?" - they struggled to provide a reasonable answer and were clearly showing signs of unsatissfaction with the company.

it was messy. HR didn't answer via e-mail in full sentences. Interview is in English but interviewer has a strong Russian accent and most of the team communication is in Russian. Very poor communication. Feels like a waste of time. They have 2 hour technical rounds. 3 rounds or something