Senior Principal System Administrator (Onsite)

Collins Aerospace is seeking a Senior System Administrator to oversee provisioning, installation, configuration, operation, and maintenance of classified systems hardware and software infrastructure. This role operates within a multi-platform environment including Microsoft Windows and RedHat Enterprise Linux, requiring collaboration with cybersecurity professionals and mentorship of junior team members. The position involves developing system administration processes, troubleshooting complex technical challenges, and ensuring compliance with advanced IT security requirements for classified defense programs.