4+ years of hands-on Ruby on Rails work experience with production applications Experience solving issues around scale, concurrency, queuing, background processing, and efficient ingestion of third party data Mastery of fundamentals: SOLID coding principles, domain-driven design, performant code and queries, unit and integration testing Ability to build quick when needed for experiments and clean when MVP becomes core functionality Strong SQL and data analysis skills Full stack mentality, owning features from back end to front end code Experience with agile development, sprints and scrum Familiarity with Git, Github, Jira