Manager, Information Security Systems Engineering

Job Title: Manager, Information Security Systems Engineering Job Number: 45969 Job Location: Yorba Linda, CA Job Schedule: 4/10: Employees work 10 hour shifts 4 days a week Job Description: 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 that support the Range & Test Solutions (RTS) Annual Services Contract. This 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 closely with engineering, cybersecurity, and program leadership to ensure reliable, secure, and compliant technical operations across multiple systems. Essential Functions: 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 Defense Counterintelligence and Security Agency (DCSA), Department of Defense (DoD) Cybersecurity Workforce requirements, National Institute of Standards and Technology (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, reliable system performance supporting mission deliverables. Manage hardware resources, network components, and hands‑on equipment that require 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. Qualifications: Active US Secret security clearance. Bachelor’s degree in Information Systems, Computer Science, Engineering, or related field, with a minimum of 9 years of experience, or a Graduate Degree and a minimum of 7 years of prior related experience. In lieu of a degree, minimum of 13 years of prior related experience. Preferred Additional Skills: 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 Defense Counterintelligence and Security Agency (DCSA) processes. Knowledge of Security Information and Event Management (SIEM), Host‑Based Intrusion Detection System (HIDS), endpoint protection platforms, and vulnerability management tools. Background administering multiple classified and customer‑funded networks. Certified Information Systems Security Professional (CISSP) or Information Systems Security Architecture Professional (ISSAP) certifications. Experience managing infrastructure during facility transitions or major system upgrades. In compliance with pay transparency requirements, the salary range for this role in California is $127,500.00 - $236,500.00. 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. #LI-KA1