Joshua Hoffman is an experienced engineer, technical leader, and public speaker. As an early Red Hat System Engineer, Hoffman consulted for organizations across North America, Europe, and Asia, and created Red Hat's award winning Virtual Training platform. Next, Hoffman served as Director of Infrastructure for Tumblr, leading the team that built Tumblr's open source data center automation tool Collins. At SoundCloud, he served as Technical Director, leading the infrastructure team that created the popular open source metrics platform Prometheus.