First interview was done online and the second interview onsite in Frankfurt-Höchst. The people I met during online and onsite interview were logic and sound good. I received the offer and I accepted it. However, they denied to send me the contract. They said that the working council of company feels I lack some experiences for this job. This was one of rare biggest damages to my professional life. They still have not compensated the cost of my traveling for the second interview despite that they had promised to do so.