First it was a screening with a recruiter, who was really nice, presenting the company and its benefits, the city of Berlin and so of the role. She also asked for some of my background. The next round was with the head of department, who was also really nice, asking general computer science questions, some algorithm questions with screen sharing. For the next round, they invited me to come over to Berlin and had one interview with other SREs, who asked me questions about TCP/UDP protocol, HTTP, Linux, systems architecture and infrastructure and also AWS.