Dell Technologies Senior Software Developer interview questions

I've found a job ad on openstack.org/jobs, I've contacted HR, and offered my services. I had a first introduction call with HR, and then we organized an interview with a manager. There been a lot of questions regarding my background. Next interview involved team leader and some developer from US. There been quite a hardcore test regarding python programming language. Later I've been sent an offer to join a company, they even give a bonus payment. I had to relocate my self from Lithuania to Dublin.