Effie studied physics and distributed scientific computing but didn't turn out to be a physicist or a scientific computer scientist. She has worked as a systems engineer/SRE at a number of startups and small organizations (most of which are not with us anymore), where her responsibilities were usually automation, infrastructure architecture, and working closely with developers. Currently, she is on the SRE team that takes care of Wikipedia and its sister projects at the Wikimedia Foundation.
Linked Presentation: