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Sean Fagan has a diverse work experience spanning multiple industries and roles. Sean is currently a Founding Engineer at dope.security since July 2021. Prior to that, Sean worked as a Software Engineer Consultant as a self-employed individual from April 2019 to September 2022.

From 2014 to 2019, Sean was a Member Of Technical Staff at iXsystems, Inc. where they played a principal role in developing and maintaining various software components, including the software update mechanism, installer, kernel debugging over network, and auto-packaging during FreeBSD build.

Before that, Sean spent a significant portion of their career at Apple Computer. From 2005 to 2014, they served as a Senior Software Engineer, focusing on designing, implementing, and maintaining core file system technologies for Mac OS X and iOS. Sean also played a principal role in developing fsck_hfs, a vital tool for file system consistency checking and repair. Prior to their senior role, Sean was a Software Engineer in Apple Worldwide Developer Relations (WWDR) SWAT Team, where they provided engineering expertise and support to internal and external developers.

Sean's earlier experiences include working as a Principal Software Engineer at Mail Abuse Prevention System, where they designed and implemented database tools and took on managerial responsibilities. Sean also worked at Stratus Computer in the commands and utilities group and at Cygnus Support in the compilers and development tools division, focusing on cross-compilation environments and UNIX-compatible library development. Additionally, Sean worked at The Santa Cruz Operation as a Member Of Technical Staff, contributing to the enhancement and testing of the SCO UNIX kernel and software development tools.

Overall, Sean Fagan has a strong background in software engineering, with particular expertise in file systems, compilers, and development tools.

Sean Fagan attended San Fernando High School, but no specific dates of enrollment or degree information are provided. Following this, from 1985 to 1988, Sean attended California State University, Northridge, where they pursued a Bachelor's degree in Computer Science. However, it is important to note that the degree was not completed.