Manager, Information Security Systems Engineering

L3Harris•Yorba Linda, CA

22h•Onsite

About The Position

The Manager of Information Security Systems Engineering leads a team of system and network administrators responsible for maintaining secure, accredited, and mission-critical information systems supporting the Range & Test Solutions (RTS) Annual Services Contract. The role oversees classified and isolated network environments, ensures compliance with Department of Defense cybersecurity standards, and drives continuous improvement across infrastructure, security operations, and service delivery. The manager partners with engineering, cybersecurity, and program leadership to ensure reliable, secure, and compliant technical operations across multiple systems. The position is located in Yorba Linda, California, and follows a 4/10 schedule: employees work 10-hour shifts four days a week. Travel may be required up to 5% for program or technical coordination.

Requirements

Active US Secret security clearance.
Bachelor’s degree in Information Systems, Computer Science, Engineering, or a related field and at least 9 years of experience; or a graduate degree and at least 7 years of prior related experience.
In lieu of a degree, at least 13 years of prior related experience.

Nice To Haves

Compliance with DoD Cybersecurity Workforce certification requirements.
Progressive experience in system administration, network operations, information security, and engineering leadership.
Experience leading teams supporting classified environments and DoD-governed technical processes.
Experience with secure network architecture design and defense-in-depth implementations.
Familiarity with accreditation packages, security control assessments, and DCSA processes.
Knowledge of SIEM, HIDS, endpoint protection platforms, and vulnerability management tools.
Background administering multiple classified and customer-funded networks.
CISSP or ISSAP certifications.
Experience managing infrastructure during facility transitions or major system upgrades.

Responsibilities

Lead and manage a team of system administrators supporting multiple on-site classified, accredited, and isolated network environments.
Oversee system operations across Windows Server, Windows workstation environments, Red Hat Enterprise Linux (RHEL) servers, Active Directory, email platforms, endpoint security tools, backup systems, and network devices.
Maintain compliance with DCSA, Department of Defense Cybersecurity Workforce requirements, NIST standards, and program-specific security directives.
Coordinate technical planning, system hardening, patching, and vulnerability management across RTS infrastructure.
Support accreditation activities, incident handling processes, and preparation for customer security audits.
Partner with program leadership to ensure secure and reliable system performance supporting mission deliverables.
Manage hardware resources, network components, and hands-on equipment requiring on-site support.
Support proposal development by providing technical, cost, and schedule inputs related to cybersecurity, system administration capabilities, staffing estimates, and infrastructure requirements.
Perform Control Account Manager (CAM) responsibilities, including planning, tracking, and reporting cost and schedule performance using Earned Value Management (EVM) processes.
Travel up to 5% for program or technical coordination.