Information Systems Security Manager; ISSM

Job Summary

This role will serve as the Information Systems Security Manager (ISSM) for the Torrance and Cypress, CA facilities. The ISSM is responsible for maintaining the overall system security posture of classified programs and technical security capabilities at Mercury sites. The ISSM manages the process to protect classified information. Primary function is the implementation of all classified security policy, procedures, and government security requirements required by the United States Government.

Additionally, the ISSM is responsible for the implementation of the Department of Defense (DoD) Risk Management Framework (RMF), outlining classified security policies and procedures and ensuring compliance with all applicable government regulations. The ISSM will work closely with the Corporate Security team to ensure compliance with DoD and other U.S. Government system requirements.

• Collaborate with the Corporate ISSM to ensure all accredited information systems meet RMF requirements.
• Prepare, maintain, and upload System Security Plans (SSPs) and supporting artifacts in eMASS.
• Ensure SSPs accurately reflect system configuration and required security controls.
• Support certification testing and assessments conducted by the Cognizant Security Agency (CSA).
• Develop and maintain procedures supporting Configuration Management (CM) for security‑relevant hardware, software, and firmware.
• Ensure compliance with DoD certification and accreditation requirements, including DoDI 8510.01 (RMF for DoD IT).
• Install, update, and maintain security‑related software tools to detect malicious code, viruses, and unauthorized intrusions.
• Maintain physical security for the site(s) to include intrusion detection system, access control, CCTV, security locks, and GSA security containers.
• In partnership with the FSO, implement procedures for marking, handling, transporting, sanitizing, and destroying media containing classified information.
• Conduct periodic hardware and software inventory assessments, identify system security control shortcomings, and lead remediation of deficiencies.
• Conduct audits, perform analysis, and investigate security incidents such as data spills, data integrity issues, and malicious events.

• Bachelor’s degree
• Typically requires 5 years of prior relevant experience
• Must be a U.S. citizen
• Active U.S. Secret security clearance with the ability to obtain Top Secret clearance
• Must have Security+ certification or obtain it within 6 months of hire
• Linux admin experience

• Advanced degree in a related field
• Typically requires 3 years of experience
• E‑MASS database experience
• ISSM certification

• Bonus opportunities (or special incentives for sales positions)
• Health, life and disability insurance
• Company‑paid holidays and time off
• 401(k) retirement plan
• Discounted employee stock purchase plan
• Tuition reimbursement
• Access to professional development and personal wellness platforms including Linked In Learning, Headspace, Aaptiv and Virgin Pulse
• Team members at the Director or Vice President level are also eligible to receive annual stock‑based awards
• Mercury offers a 9/80 alternative work schedule that provides employees more opportunity for work/life balance (available based on location)

This position requires you to access information that is subject to U.S. export regulations. You may only access such information if you are a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. government.

We are an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex (including pregnancy), sexual orientation, gender identity, national origin, genetic information, creed, citizenship, disability, protected veteran or marital status.

As an equal opportunity employer, we are committed to a diverse workforce. In order to ensure reasonable accommodation for individuals protected by Section 503 of the Rehabilitation Act of 1973, the Vietnam Veterans' Readjustment Act of 1974, and Title I of the Americans with Disabilities Act of 1990. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact the number below.

(978) 256‑1300