Dorien Koelemeijer

Dorien Koelemeijer is a highly experienced Staff Security Engineer specializing in cloud and infrastructure security, currently employed at Block since February 2022, previously holding the position of Senior Security Engineer. Prior experience includes roles at Afterpay and Klarna, where Dorien focused on automating security processes and participated in security operations. Earlier career highlights include work at CITADEL, emphasizing critical infrastructure protection, and at atsec information security as a Security Engineer. Dorien holds a Master of Science in Information Security from Stockholm University and a Master of Science in Interaction Design from Malmö University, as well as other academic credentials in design and biomedical sciences. Notably, Dorien presented at Klarna's internal tech conference, showcasing expertise in the field.