MANTECH seeks a motivated, career-oriented **Acquisition Security Analyst III** to join our team in **El Segundo, CA** supporting advanced technology protection for high-priority government programs. In this role, you will help implement and manage program protection methodologies throughout the acquisition lifecycle to ensure the security and integrity of sensitive systems. **Responsibilities include but are not limited to:** You will support security planning, documentation, analysis, and classification activities to protect critical technology, systems, and operational information throughout the development lifecycle. + Conduct lifecycle program analysis to identify Critical Program Information (CPI), Critical System Resources (CSR), associated vulnerabilities, and help implement countermeasures + Provide technical security support and guidance to SAP, SCI, and collateral programs across acquisition and sustainment phases; offer informed recommendations to program management and security stakeholders + Support the development, execution, and implementation of Program Protection Plans (PPP) and supporting documents including OPSEC plans, transition plans, CONOPS, emergency action and transport plans + Review and coordinate documentation for public release, ensuring proper CUI markings, classification levels, and distribution statements in alignment with Air Force doctrine + Develop tailored analytical products using multiple data sources and systems to support real-time security decision-making and risk management + Exposure Contingency Plans (ECPs), Managed Access Plans (MAPs), SOPs, and System Test Plans (STPs) + Provide technical analysis and OPSEC support to SMC or AFSPC special programs, including efforts related to system RDT&E, mission planning, and operational integration **Minimum Qualifications:** + Bachelor’s degree in a related field; 4 additional years of equivalent experience might be substituted for a degree + 10+ years of experience supporting acquisition programs, including at least 6 years with SCI or SAR programs + 4+ years of experience specifically with SAR program acquisitions (desired) + Familiarity with applicable DoD security manuals, ICDs, JAFANs, and other guiding policy documents + Extensive knowledge of DD Form 254 and its role in the Air Force acquisition process **Clearance Requirements:** + Current Top Secret clearance with SCI eligibility is required + Must be eligible for access to Special Access Programs + Willingness to submit to a Counterintelligence polygraph is required **Physical Requirements:** + Must be able to remain in a stationary position 50% of the time + Occasionally moves within the office to access files, equipment, and other materials + Constantly operates a computer and standard office equipment such as printers and copiers + Frequently communicates with colleagues, management, and customers; must be able to exchange accurate information, including delivering presentations ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.