Summary
Stefan S is a Senior Software Engineer based in Geneva with a decade-plus career focused on mobile and secure payment experiences, currently driving iOS security and 2FA architecture at Swissquote. He has led end-to-end mobile projects from VR streaming and cross-platform React Native apps to CarPlay and high-performance native iOS features, blending Swift, Objective-C, and modern CI/CD practices. Stefan’s experience spans startups and scale-ups where he improved responsiveness, modularity, and deployment efficiency using tools like Fastlane, Cocoapods and CoreData. He has a proven track record in authentication flows and UML-driven designs, translating complex security requirements into auditable implementations. An early indie developer who shipped a Kickstarter-funded iOS game, he brings product-minded engineering and pragmatic performance optimizations to every codebase. Based in Switzerland and completing a BSc in Computer Science through the University of London, he pairs hands-on technical depth with a strong focus on reliability and user-facing security.
8 years of coding experience
Python Software Engineering (intensive program), Python Software Engineering (intensive program) at Nomades Advanced Technologies
Bachelor of Science (BSc) Computer Science, Bachelor of Science (BSc) Computer Science at University of London
English, German, French