ZF Group Senior Software Engineer interview questions

Stay away from ZF Hyderabad. Pathetic HR team, never seen such unethical and unprofessional HR in my 5 years career. I've given more than 25 interviews in my career span, received more than 15 offers in different stages, and these guys top on worst list. Unfortunate that ZF ITC has such a pathetic standards. Not only the way they deal with a candidate, also their terrible requests to share confidential salary and offer letters. Worst standard mentalities. I cleared tech rounds perfectly. During HR round, (I don't wanna take their names) HR asked me that they want to check the offer letter I received from some other company, to believe that I really hold an offer, then to decide whether to give an offer to me or not. They don't trust you, they don't treat you well, they don't answer your calls, they don't respond to your emails, they'll kill your time... What not!!! I stopped responding their calls after knowing how terribly they can behave. You can even read Hyderabad location reviews. I can't tell how much I regret for getting into discussion with these HR.