Linux Systems Administrator

Linux Systems Administrator

Herndon, VA

04/01/2025 - 09/30/2025

Job Description

Key Responsibilities:

• Assist in creating and maintaining a CMMC-compliant infrastructure.
• Administer and harden Red Hat Enterprise Linux (including Rocky) and Ubuntu systems.
• Implement NIST 800-171 controls, ensuring compliance with established policies.
• Conduct CIS hardening for Linux and Windows systems.
• Manage LDAP authentication, integration, and policy enforcement.
• Use Red Hat Ansible for automation and server modernization efforts.
• Monitor and optimize systems for peak performance.
• Perform complex software installations, upgrades, and audits for compliance.
• Work collaboratively with developers, system users, and senior personnel to ensure controls remain non-disruptive.

Must-Have Skills:

• Automation technology expertise.
• Proficiency in RHEL, SELinux, and Ubuntu.
• Hands-on experience with CIS hardening for Linux and Windows systems.
• LDAP authentication and integration capabilities.
• Skilled in Red Hat Ansible for system administration.

Nice-to-Have Skills:

• Familiarity with Active Directory (AD) and FreeIPA installation, configuration, and integration.
• Knowledge of USG regulations (DFARS, CMMC) and CMMC 2.0 assessment readiness.
• Experience with FreeIPA, Linux LDAP, SSSD, Kerberos authentication, and MFA implementation.

Qualifications:

• Bachelor’s degree with 5 years of related experience, Master’s with 3 years, or PhD with equivalent experience.