(Linux Administrator) Sr. Specialist, Systems Administration

L3Harris Technologies; Tulsa (OK); On-site; USD 95,000 - 125,000; Full time

Job summary

L3Harris Technologies is seeking a Senior Linux Administrator to maintain a mixed Windows and Linux environment in Tulsa, OK. The role requires strong Linux engineering skills, patching, STIG hardening, and automation-based deployments, with the ability to guide IT projects and support on-site system administrators.

The candidate will interact with program leadership, perform budget-related tasks, and ensure security policy compliance while delivering reliable end-user support and system

Qualifications

• Bachelor’s Degree or equivalent experience with 6+ years in Linux administration.
• 8+ years in Red Hat Linux administration, networking (TCP/IP), scripting, and cybersecurity practices (patch management, STIG compliance).
• Current/Active Secret Security Clearance.

Responsibilities

• Administer and maintain Red Hat Linux servers and workstations.
• Ensure compliance with computer security policy including NIST 800-53 and DISA STIGs.
• Respond to support tickets and interface with users and management.
• Develop policies and documentation for computing resources usage.
• Evaluate vendor products with leadership and program teams; make hardware/software recommendations.
• Provide managerial support for on-site system administration team, including performance evaluations and budget management.

Skills

Red Hat Linux

Networking

Shell scripting

Cybersecurity practices

Automation tools

LDAP

VMware

Citrix

Centrify

VDI

Active Directory integration

Education

Bachelor’s Degree

Tools

Satellite

Ansible

Kickstart

NetApp

CommVault

Samba

NFS

Active Directory

Job description

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

Job Title: (Linux Administrator) Sr. Specialist, Systems Administration

Job Code: 42157

Job Location: Tulsa, OK

Job Schedule: 9/80 (Every Other Friday off!)

Job Description:

Experienced Linux Administrator responsible for maintaining a mixed Windows and Linux system environment. This candidate should understand networking concepts, be capable of performing system patching and STIG hardening, be proficient with deployment using automation tools as well as having experience providing end user support to the desktop level. The person in this position must be able to communicate technical concerns and solutions to varying levels of management and program engineering teams and is also responsible for leading IT projects at the local level. In addition, this position will provide managerial support for 2 on-site system administrators.

Essential Functions:

• Responsible for administration and maintenance of Red Hat Linux servers and workstations
• Ensure compliance with computer security policy, including NIST 800-53 and DISA STIGs
• Respond to support tickets & interface with users
• Develop and monitor policies and standards and develop documentation related to the use of computing resources
• Interact with the business and program leadership to evaluate vendor products and make hardware and software recommendations
• Managerial support for on-site system administration team to include performance evaluations and budget management.

Qualifications:

• Bachelor’s Degree and minimum 6 years of prior relevant experience. Graduate Degree and a minimum of 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.
• 8 years of experience in/with: Red Hat Linux administration, networking (TCP/IP, network interfaces, subnets), shell scripting, troubleshooting, cybersecurity practices (patch management, STIG compliance, system accreditation, etc.)
• Current/Active Secret Security Clearance

Preferred Additional Skills:

• CompTIA Security+, CISSP or any DoD 8140 approved certification
• Ability to function independently with minimal direction
• Willingness to train and adapt to new technologies
• Ability to function in a team environment; collaborate with other team members.
• Good interpersonal skills for interfacing with direct reports, users and business/program management
• Experience with LDAP, VMware, Citrix, Centrify, VDI
• Experience with authenticating RHEL logins to Active Directory
• Automation & enterprise deployment tools (Satellite, Ansible, Kickstart)
• Knowledge of storage appliances (e.g. NetApp)
• Familiarity with backup concepts and solutions (e.g. CommVault)
• Working knowledge of Samba and NFS

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.