Title:  Senior Specialist Linux Engineer

Job Title: Senior Specialist Linux Engineer

Job Code: 23517

Job Location: Schriever SFB, CO

Job Description:

L3Harris Technologies is seeking a Senior Tier 3 Linux Engineer to provide enterprise-level support for mission-critical systems supporting national security operations. The successful candidate will join a collaborative team responsible for ensuring availability, stability, and performance across a diverse fleet of Red Hat Enterprise Linux (RHEL)-based systems in a secure environment.

This position supports the Space Superiority Business within the Space Systems sector of the Space and Airborne Systems segment and requires a strong foundation in Linux system administration, automation, and troubleshooting in high-availability environments.

Essential Functions:

• Serve as the final escalation point for Linux-related system issues in a mission-critical, classified environment.
• Design, configure, maintain, and troubleshoot RHEL-based servers in virtual and physical environments.
• Support patch management, OS upgrades, kernel tuning, and security hardening per DoD STIGs and organizational policies.
• Leverage configuration management tools (e.g., Ansible, Puppet) to automate system deployments and updates.
• Support integration of Linux systems with identity services (e.g., LDAP, Active Directory) and enterprise tools.
• Perform root cause analysis, generate technical documentation, and provide recommendations for long-term solutions.
• Collaborate with security, networking, storage, and application teams to resolve cross-domain issues and ensure system compliance.
• Participate in on-call rotation and support planned maintenance after hours as required.
• Perform additional duties and responsibilities as assigned.

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.
• Active adjudicated Top Secret/SCI Clearance is required and ability to obtain a CI Polygraph.
• RHCSA certification (Red Hat Certified System Administrator) or equivalent is required.
• DoD 8570 IAT Level II certification (e.g., Security+, CySA+, GSEC) is required.

Preferred Additional Skills:

• RHCE or higher-level Red Hat certifications.
• Experience managing RHEL 7/8/9 in secure, air-gapped environments.
• Familiarity with satellite server management and repository mirroring in disconnected environments.
• Strong scripting skills in Bash, Python, or similar for automation and tooling.
• Experience with SELinux, firewalld, auditd, and other security modules.
• Knowledge of virtualization technologies (e.g., VMware, KVM), SAN/NAS storage, and networking principles.
• Familiarity with STIG compliance, DISA SRGs, and hardening tools such as OpenSCAP.
• Exposure to CI/CD pipelines and Infrastructure as Code (IaC) practices.
• Excellent written and verbal communication skills for interaction with technical and non-technical stakeholders.

In compliance with pay transparency requirements, the salary range for this role in Colorado is $90,500 - $168,500. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

The application window for this requisition is anticipated to close July 8th.

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