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.
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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.
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