About this role
General information
Requisition # R65157 Locations USA-CA-Los Angeles Posting Date 01/27/2026 Security Clearance Required TS/SCI Remote Type Onsite Time Type Full timeDescription & 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 is seeking a motivated, career and customer-oriented Cybersecurity System Security Engineer I to join our team in El Segundo, CA.
The Cybersecurity System Security Engineer’s primary function is working within Special Access Programs (SAPs) supporting SSC 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:
Perform oversight of the development, implementation and evaluation of information system security program policy; special emphasis placed upon integration with existing SAP network infrastructures.
Support a team of System Security Engineers and Certification and Accreditation Analysts responsible for ensuring the customers national and international security interests are protected as support equipment are designed and tested.
Support customer and SAP community IA working groups, participate in SSE IPT reviews.
Provides expert level consultation and technical services on all aspects of Information Security.
Review SSE related designs, provide security compliance recommendations, and develop and provide IA risk management recommendations to the customer.
Provide SSE support for Mission and Training systems design and development.
Assist with development and maintenance of the Program Protection Plan, Cybersecurity Strategy, site activation activities and design reviews.
Represent the Government Program Manager in various SSE related working groups, advisory groups, and advisory council meetings.
Minimum Qualifications:
Bachelor’s degree in a related field or 4 additional years of direct experience will be considered in lieu of degree.
6 + years of relevant experience.
2 + years of experience with SCI.
Must meet position and certification requirements outlined in DoD Directive 8570.01-M for Information Assurance Technician Level 2 and Information Assurance Manager Level 1 within 6 months of the date of hire.
Must be familiar with security policy/manuals and the appropriate ICDs/JAFANs/DOD Manuals and other guiding policy documents.
Familiarity with Risk Management Framework (RMF) and Joint SAP Implementation Guide (JSIG) processes for system accreditation, along with legacy (DISTSCAP, DIACAP) processes.
Willingness to travel within the organizational Area of Responsibility (AOR) (note - could be extensive, and will include both air and ground transportation)
Preferred Qualifications:
1+ year of SAP relevant experience highly desired.
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.
Clearance Requirements:
Current Top Secret Clearance with SCI Eligibility.
Eligibility for access to Special Access Program Information.
Willingness to submit to a polygraph.
Physical Requirements:
Must be able to remain in a stationary position 50%.
The person in this position frequently communicates with co-workers, management and customers, which may involve delivering presentations.
Must be able to exchange accurate information in these situations.
Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.
The projected compensation range for this position is $141,500.00-$236,000.00. 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 its 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.