Erik Rose coordinates the impact of 108 spring-loaded buttons at Mozilla, venting a byproduct of static analysis, search, and pattern-finding software. By day, he leads the development of DXR, a comprehension tool for large codebases; by night, a bevy of eclectic Python libraries. Skeletons in his closet include the self-bootstrapping mechanism for Let's Encrypt, the hash-verification functionality in pip, and a book about Plone. He is a frequent PyCon speaker and has keynoted PyCon Argentina and Bangalore's The Fifth Elephant.