Senior Information System Security Officer (ISSO) - El Segundo, CA (Sponsor Clearance)
Sign up free to see how well your resume matches this role.
What you'll do
- Assessing and monitoring system compliance, auditing, security plan development and delivering information systems security education and awareness.
- Investigating information system security violations and help prepare reports specifying corrective and preventative actions.
- Reviewing and approving (within authority) configuration management requests.
- Conducting technical and administrative assessments.
- Integrating new cybersecurity processes, procedures, and tools.
- Support the creation, review and update of cybersecurity documentation and other technical writing.
What they're looking for
- Typically requires a University Degree or equivalent experience and minimum 5 years prior relevant experience, or an Advanced Degree in a related field and minimum 3 years’ experience.
- Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance
Nice to have
- Experience working in DoD classified operating and/or laboratory environments.
- Experience with various information system security tools that address vulnerability analysis and mitigation. These may include Splunk, Forcepoint, Ivanti, Tenable, ACAS, HBSS, etc.
- Familiarity with implementation of Government directives and policies derived from NIST, CNSSI, DoD, or other Government Regulatory compliance standards within a professional industry.
- Experience in the execution of the Assessment & Authorization processes, as defined within the Risk Managed Framework (RMF).
- Experience providing technical security consultation for complex, cross-domain, heterogeneous classified networked environments in collaboration with internal/external Customers, Information Technology (IT).
- Familiarity with large multi-facility networks including various complex components, including Windows and Linux environments.
- Experience interpreting, implementing, and assessing DISA STIGs.
- Familiarity with the execution and management of cyber incident response; preservation, containment, and eradication.
Summarised by NextRaise from the employer’s description, which follows in full below.
Full description from employer
Date Posted:
2026-09-17

Country:
United States of America

Location:
US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01

Position Role Type:
Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:
Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Security Clearance Type:
DoD Clearance: Secret

Security Clearance Status:
Ability to obtain INTERIM U.S. government issued security clearance is required prior to start dateRaytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.
Our cybersecurity team is seeking a Senior Information Systems Security Officer (ISSO) to support our team 100% onsite at our facility in El Segundo, California. The successful candidate will interface with the Information Systems Security Manager (ISSM) to ensure adherence with NIST Special Publications, customer directives, and company policies as applicable all NISPOM Chapter 8, DAAPM, JSIG policies.
What You Will Do
Assessing and monitoring system compliance, auditing, security plan development and delivering information systems security education and awareness.
Investigating information system security violations and help prepare reports specifying corrective and preventative actions.
Reviewing and approving (within authority) configuration management requests.
Conducting technical and administrative assessments.
Integrating new cybersecurity processes, procedures, and tools.
Support the creation, review and update of cybersecurity documentation and other technical writing.
Important note: Within six months of hire date, you must obtain and maintain a Security professional certification commensurate with IAM Level I certification (Security+ or other), if you do not already have this certification.
Qualifications You Must Have
Typically requires a University Degree or equivalent experience and minimum 5 years prior relevant experience, or an Advanced Degree in a related field and minimum 3 years’ experience.
Relevant Experience Considered in any combination:
Cybersecurity, systems security or hardening
Information Technology
Compliance-based auditing using the Risk Management Framework (RMF), DCSA Assessment and Authorization Process Manual (DAAPM), Joint SAP Implementation Guide (JSIG), National Industrial Security Program Operating Manual (NISPOM), and/or non-defense regulations such as FAA, Payment Card Industry (PCI), ISO 9001 Quality Management standards, or HIPPA
Experience working with and/or supporting computer technologies (such as: databases, operating systems, computer network hardware, software programs, hardware troubleshooting or electronics)
Physical security/security, policework/criminal justice, investigations, or Border Patrol
Project or program management, office management, senior administration, or account management
The ability to obtain and maintain a U.S. government issued security clearance PRIOR TO START is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance
Qualifications We Prefer
Experience working in DoD classified operating and/or laboratory environments.
Experience with various information system security tools that address vulnerability analysis and mitigation. These may include Splunk, Forcepoint, Ivanti, Tenable, ACAS, HBSS, etc.
Familiarity with implementation of Government directives and policies derived from NIST, CNSSI, DoD, or other Government Regulatory compliance standards within a professional industry.
Experience in the execution of the Assessment & Authorization processes, as defined within the Risk Managed Framework (RMF).
Experience providing technical security consultation for complex, cross-domain, heterogeneous classified networked environments in collaboration with internal/external Customers, Information Technology (IT).
Familiarity with large multi-facility networks including various complex components, including Windows and Linux environments.
Experience interpreting, implementing, and assessing DISA STIGs.
Familiarity with the execution and management of cyber incident response; preservation, containment, and eradication.
What We Offer
Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation.
Relocation Non-Eligible – Relocation assistance not available
Learn More &
Please consider the following role type definition as you apply for this role:
Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products
#LI-Onsite
As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.
The salary range for this role is 95,500 USD - 181,700 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.
Privacy Policy and Terms:
Click on this link to read the Policy and Terms
Company
Company facts come from this company's own listings. We only show what the postings themselves carry.