Senior Linux Systems Administrator - Secret

About the position

HRL is seeking an experienced Linux Systems Administrator to join the Special Programs IT team in Malibu, CA. The successful candidate will collaborate with other systems administrators located in Malibu and at various locations throughout the United States. A willingness to continue learning new technologies is a must. An active Secret clearance and experience in classified programs is required.

Responsibilities

• Perform a multi-disciplined range of technical system and application activities
• Install, configure, and maintain multiplatform systems hardware, software, and components
• Administer and manage Windows and Linux systems in the operations, engineering, analysis, and test environments
• Maintain Linux systems servers and workstations
• Administer installation of software, hardware, file system management, backups, process control, user administration, and device management
• Resolve a wide variety of complex system failures, troubleshooting software, hardware, and network problems
• Install, configure, and maintain Microsoft Active Directory domains and forests
• Perform system and user account maintenance
• Test and assess security configuration of Windows and Linux servers
• Monitor, evaluate, and optimize system performance
• Analyze, test, and implement security patches and hardening
• Document maintenance actions
• Develop and promote standard operating procedures and conduct routine hardware and software audits of servers to ensure compliance with established standards, policies, and configuration guidelines
• If required, assist in IT security incident response and documentation
• Participate in internal & external security audits/inspections

Requirements

• Experience in Linux systems administration
• Understanding of multiplatform system hardening (e.g., DISA STIG, SCAP)
• Experience integrating Linux systems into an Active Directory environment
• Experience with Red Hat Enterprise Linux (8, 9)
• Experience with Ubuntu Linux (20.04, 22.04)
• Experience with scripting for task automation (e.g., shell scripting, Python, Perl)
• Experience with systems management and automation software (e.g., Satellite, Foreman, Ansible)
• Strong understanding of networking fundamentals (e.g., switching, routing, firewalls, load balancing)
• Experience with system monitoring & alerting tools (e.g., Nagios)
• Experience working within an accredited system
• Ability to work independently
• An active Secret U.S. Security Clearance
• Minimum 7 years of experience in a related role

Nice-to-haves

• A current Top Secret/SCI security clearance with in-scope polygraph is preferred
• Understanding of VMware vSphere virtual environments
• Experience in multiplatform environments (Windows and Linux)
• Experience with Privileged Access Management platforms (e.g., Centrify, Delinea)
• Experience with file transfer protocols (e.g., SMB, NFS, iSCSI)
• Experience with hardened Linux configurations (i.e., fapolicyd, SELinux)
• Experience with container management/orchestration (e.g., Docker, Kubernetes)
• Experience with administration of web and database servers (e.g., Nginx, Apache, MySQL, PostgreSQL)
• Experience with Continuous Integration/Continuous Development tools and pipelines (e.g., GitLab, Artifactory, Terraform)
• Proficient knowledge of cyber security technology and trends (e.g., least privilege, RBAC, Zero Trust)
• Experience with High Performance Computing, applications, and frameworks
• Understanding of package management tools (e.g., RPM, DEB)

Benefits

• Base salary range for this full-time position is $109,695 - $137,145 + bonus + benefits