David Josephsen is a seasoned technology professional with extensive experience in site reliability engineering and systems optimization. Currently serving as a Senior Site Reliability Engineer at Fastly since January 2019, David's work focuses on building systems for network cost efficiency, performance, and reliability. Previous roles include Site Reliability Engineer at SparkPost, where efforts facilitated high-volume email delivery, and at Librato, where David contributed to devops infrastructure. David's career began with positions such as Director of Systems Engineering at dbg.com and as a Security Consultant at Vilgilar Inc., showcasing a diverse skill set in engineering, development, and project management across various organizations, including VHA Inc. and IBM Global Services.