Working at Puzzle ITC mainly on Open Source, Automation and Configurationmanagement topics.

Sergej Schmidt is a senior security consultant at WALLSEC. He conducts pentests and is regularly involved in detection engineering and SOC automation projects. His somewhat non-linear path started more than a dozen years ago at a small consultancy company, then going back to university, only to find him self in large enterprises at the end. While doing his Masters he spent two years with research on automated binary reversing and was working as a Linux admin. Most of his career his areas were pentesting of network infrastructures, build systems, web and mobile applications.
Before his current job, he spent multiple years at the defenders' side as an incident responder with a focus on Linux security monitoring and detection engineering.