Sarka has extensive experience in cybersecurity, currently serving as a Senior Security Researcher at Thermo Fisher Scientific since July 2022 and as a member of the Ad Hoc Working Group on the European Cybersecurity Skills Framework for the European Union Agency for Cybersecurity (ENISA) since April 2023. Sarka leads the Capture the Flag team at DEFCON's Biohacking Village, promoting cybersecurity education in healthcare and medical devices. Additional roles include co-organizing BSides Cairo, co-founding the DEFCON Group Paris, and serving on the board of the (ISC)² Chapter Switzerland. Previous positions include Security Consultant and Penetration Tester at Dreamlab Technologies and SureCloud, respectively, and co-founding InfoSec Hoppers, a group aimed at supporting women in information security.