Stefanie Schirmer is a Software Engineer at Etsy and an alumna of Hacker School in New York. She studied Applied Computer Science in the Natural Sciences in Bielefeld, Germany, where she developed a type checker for a compiler of a language for optimization problems. In her following PhD project she developed metrics for the structure comparison of RNA molecules. Working as a postdoc in Montréal, Canada, she found her way to Hacker School and to Etsy in Brooklyn and Berlin. In Etsy’s core platform team she is working on the API that connects the community of buyers and sellers across different devices.