Systems Administrator (Secret Clearance)

About the role

L3Harris is seeking a Cyber Infrastrastructure Systems Engineer (CISE) to join our Colorado Springs, CO team. This role requires an experienced system administrator who will manage Windows-based servers and workstations in a DoD cleared environment.

Responsibilities

• Administer, maintain, and support Windows-based servers and workstations within a cleared enterprise or mission-critical DoD environment.
• Manage the deployment of operating system patches, security updates, and hotfixes in accordance with approved maintenance schedules and security requirements.
• Implement and sustain system hardening measures using applicable DoD security standards, STIGs, and organizational cybersecurity policies.
• Perform vulnerability identification and remediation activities to support compliance with RMF controls, POA&M tracking, and audit readiness efforts.
• Maintain accurate system configurations, change records, and technical documentation to support configuration management and compliance inspections.
• Troubleshoot and resolve hardware, software, operating system, and access-related issues while adhering to established security procedures.
• Coordinate with cybersecurity, network, and program teams to support accreditation activities, incident response, and secure system operations in classified or controlled environments.

Requirements

• Bachelor’s Degree with a minimum of 4 years of relevant experience, or Graduate Degree with a minimum of 2 years of relevant experience, or in lieu of a degree, a minimum of 8 years of prior related experience.
• Secret Clearance
• DoD 8570.01-M IAT Level 2 Required Professional Certifications: CCNA- Security, Security+ CE, or higher certification

Qualifications

• Experience serving as a DoD COMSEC Manager or supporting COMSEC account management, including handling, safeguarding, inventorying, and controlling cryptographic equipment and keying material in accordance with applicable DoD policies and procedures.
• Experience administering and supporting Red Hat Enterprise Linux (RHEL) systems in a DoD, federal, or other regulated environment, including patching, system hardening, user administration, and troubleshooting.
• Utilizing virtualization technologies such as KVM, VMware, vSphere/vCenter, and microservices/containers (e.g., OpenShift, Docker) to enhance system functionality and efficiency.

Benefits

L3Harris 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.

Pay

In compliance with pay transparency requirements, the salary range for this role in Colorado state is $80,500-$149,500. 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.

Schedule

The position is Standard 5/8.