ManTech seeks a motivated, career and customer-oriented Network System AdministratorIII to join our team in Los Angeles, CA.The primary function is working with Special Access Program (SAPs) and other classified networks supporting SMC Directorates and/or AFSPC Operational Units. The position will provide “day-to-day” support for Collateral, Sensitive Compartmented Information (SCI) and Special Access Program (SAP) activities.Responsibilities include but are not limited to:Install, maintain, audit and support a secure MS Windows network environment and limited web/data application service.Maintain internet applications and protocols IP, TCP, HTTP, HTTPS, FTP, & SSL.Maintain file servers, Firewalls, network access, Security Monitoring Systems and system documentation as required.Interface with local customers and provide IT related support to quickly resolve problems.Perform periodic maintenance, hardware upgrades and replacement, firmware updates and system configuration changes. Perform scheduled tape backups on systems as required.Manage data backup library to include storage of tapes, disks and other magnetic media at the customer’s location and off-site storage facilities as required.Attend planning and requirements meetings with IT staff, Program Managers and customers as required.Minimum Qualifications:Bachelor’s degree in a related area or 4 additional years of experience may be accepted in lieu of degree.6+ years total related experience. 4+ years of relevant SCI experience.2+ years of SAP-related experience highly desired.Must meet position and certification requirements outlined in DoD Directive 8570.01-M for Information Assurance Technician Level 2 such as CompTIA Security + CE, within 6 months of the date of hire..Working knowledge of JAFAN 6/0, DCID/JAFAN 6/3, DCID/JAFAN 6/9, and Joint DODIIS/Cryptologic SCI Information Systems Security Standards, Common Criteria, and System Security Policy as they relate to C&A for Legacy systems.Must be familiar with security policy/manuals and the appropriate ICDs/JAFANs/DOD Manuals and other guiding policy documents.Preferred Qualifications: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.Requires travel within the organizational Area of Responsibility (AOR) (note - could be extensive and will include both air and ground transportation).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%.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.