Cybersecurity System Security Engineer

General information

Requisition # R60095 Locations USA-CA-Los Angeles Posting Date 04/30/2025 Security Clearance Required TS/SCI Remote Type Onsite Time Type Full time

Description & Requirements

Shape the future of defense with ManTech! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with ManTech!

ManTech seeks a motivated, customer-oriented Cybersecurity System Security Engineer III to join our team in the El Segundo, CA.

The Cybersecurity System Security Engineer’s primary function is working within Special Access Programs (SAPs) supporting SMC and AFSPC acquisition programs. The position will provide “day-to-day” support for Collateral, Sensitive Compartmented Information (SCI) and Special Access Program (SAP) activities to meet NIST Cybersecurity requirements for system assessment & authorization.

Responsibilities include but are not limited to:

• Lead a team of System Security Engineers and Certification and Accreditation Analysts responsible for ensuring the customer’s national and international security interests are protected as acquisition systems are designed and tested.

• Chair and or Co-Chair customer and SAP community Cybersecurity working groups, participate in SSE IPT reviews.

• Perform oversight of the development, implementation, and evaluation of information system security program policy; special emphasis placed upon integration of existing SAP network infrastructures.

• Provides expert level consultation and technical services on all aspects of Information Security.

• Review SSE related designs and provides security compliance recommendations. Provide SSE support for Mission and Training systems design and development.

• Assist with development and maintenance of the Program Protection Plan & Cybersecurity Strategy.

• Assist with site activation activities and design reviews, to include test & evaluation of systems.

Basic Qualifications:

• Bachelor’s degree in a related discipline an additional 4 years of related experience may be accepted in lieu of degree.

• 12+ years total experience

• 8+ years’ experience with SCI or SAR environment.

• 4+ years of SAP relevant experience highly desired.

• Must meet position and certification requirements outlined in DoD Directive 8570.01-M for Information Assurance Technician Level 3 and Information Assurance Manager Level 3 within 6 months of the date of hire. CISSP Recommended.

• Must be familiar with security policy/manuals and the appropriate ICDs/JAFANs/DOD Manuals and other guiding policy documents.

• Full understanding of Risk Management Framework (RMF) and Joint SAP Implementation Guide (JSIG) processes for system accreditation, along with legacy (DITSCAP, DIACAP) processes.

Security Clearance Requirements:

• Current Top Secret Clearance with SCI Eligibility

• Eligibility for access to Special Access Program Information

• Willingness to submit to a polygraph.

Preferred Requirements:

• Must have the ability to work in a dynamic environment and effectively interact with numerous DOD, military/civilian personnel and industry partners.

• Working knowledge of Microsoft Office (Word, PowerPoint, and Excel)

• Possess a high degree of originality, creativity, initiative requiring minimal supervision.

• Willingness to travel within the organizational Area of Responsibility (AOR) (note - could be extensive, and will include both air and ground transportation)

Physical Requirements:

• Must be able to remain in a stationary position 50%.

• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

• Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.

• Frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

The projected compensation range for this position is $138,700.00-$231,400.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories.  In addition, ManTech invests in it’s employees beyond just compensation.  ManTech’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, Short Term and Long Term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

ManTech International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with ManTech, please email us at careers@mantech.com and provide your name and contact information.