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L3Harris Technologies is the Trusted Disruptor in the defense industry. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Linux System Administrator

Job Code: 29921

Job Location:Greenville, TX

Schedule: 9/80

Job Description:

L3Harris is seeking a Linux Systems Administrator to support Mission System integration in unclassified and secure DoD DCSA accredited environments. The position will be responsible for developing and maintaining mission system environments with a mix of OS and hosting solutions. Integration of the mission systems will include the install and configuration of the Operating Systems and Mission software, Infrastructure services, and Cyber Security hardening. A solid understanding of Linux administration and enterprise services is required. Understanding of Windows administration is also a plus. A candidate must be a self-starter, be able to work independently, work effectively in a diverse technical team, and could take ownership of issues through resolution.

Essential Functions:

• Integrate with a team of multidiscipline, multileveled Systems Administrators supporting Linux, Windows, and Network operations
• Linux and Window system deployment, upgrades, configuration management, patching and maintenance
• Installation and hardening of enterprise services and integrated software
• Conforming to DoD security standards (RMF, DISA, CMMC, DFARS, NISPOM)
• systems
• Managing User Access and Security Policies
• Backup and recovery of Linux and Windows based systems
• Technical writing of work instructions and build manuals
• Support senior staff on documenting operational processes, configurations, and diagrams required for management, Security operations, and the software teams
• On site (not fully remote) position

Qualifications:

• Able to obtain and maintain a DoD Security Clearance, which requires U.S. Citizenship.
• Bachelor’s Degree and a minimum of 2 years of prior related experience.
• Graduate Degree or equivalent with 0 to 2 years of prior related experience.
• In lieu of a degree, minimum of 6 years of prior related experience.
• Linux server and workstation systems administration on Red Hat based distributions (RHEL9, RHEL8, RHEL7, Rocky8, CentOS7) to include
  • Break/fix troubleshooting
  • Provisioning
• Configuring and maintaining infrastructure services such as Directory Service/LDAP (ds389,RHDS), DHCP, NTP, DNS, SMB, Anti Virus, PXE Boot
• Demonstrated analytical skills
• Ability to draft Technical documents

Preferred Additional Skills: 

• Certifications RHCSA, RHCE, RHCSS, RHCDS, Security+, CISSP, CISM
• Supporting multi-OS environments of Linux, Windows, Solaris, and embedded OS’s
• System hardening and auditing to RMF, CMMC, DFARS, NIST 800-171, NIST 800-53
• Familiarity with common DoD hardening tools such as Nessus and DISA STIG
• Familiarity with Windows infrastructure services such as Active Directory, GPO, DHCP, DNS, NTP
• Familiarity with Security Information and Event Management (SIEM) techniques such as Splunk
• Demonstrated configuration management with Ansible/Ansible Automation Platform, AWX, puppet, or chef
• Demonstrated experience with scripting languages (Shell/Bash, Powershell, Python, PERL, PHP)
• Basic network administration of layer 2/3 switches
• Demonstrated knowledge of virtualization and containerization technologies
• Demonstrated understanding of metrics and monitoring systems
• Demonstrated experience performing log analysis and other network forensic investigations
• Demonstrated knowledge in troubleshooting complex distributed systems
• Demonstrated experience with creating and improving documented procedures

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L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

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