Deutsche Bank Senior Engineer - Quality Assurance interview questions

After applying for the position, I received an email asking me to provide available time slots for an interview. However, after sharing my availability, I didn’t get any confirmation for over a week. I eventually had to track down the HR contact number online to confirm the interview myself. On the interview day, three interviewers joined the call. One introduced himself but left immediately, which felt unprofessional. The remaining two conducted the technical interview. Unfortunately, they seemed unprepared, asked poorly structured questions, and reacted dismissively to my answers. One of the tasks was to write a method to find a duplicate element in an array inside a completely empty class. For a senior-level QA role, this felt irrelevant and not a meaningful way to evaluate my skills. Overall, the experience came across as unorganized and unprofessional.