**ManTech** is seeking a motivated, career and customer-oriented **Senior** **Cyber Security** **Engineer** to join our team in the **Chantilly, VA.** **Responsibilities include but are not limited to:** + Provide IA security requirements to update system requirement documents + Coordinate IA matters with other directorates and external partners as necessary + Perform, or review, technical security assessments of computing environments to identify points of vulnerability, non-compliance with established Information Assurance (IA) standards and regulations and recommend mitigation strategies. + Validate and verify system security requirements definitions, analysis, and establish system security designs + Validate proposed software, hardware, firmware, and infrastructure comply with security guidelines, policies, and procedures + Apply knowledge of IA policy, procedures, and workforce structure to design, develop, and implement secure networking, computing, and enclave environments. + Toolkits, SEIMs, LogRhythm, ACAS/Nessus/SCAP, mandatory/role-based access control concepts (e. g. SE Linux extensions to RHEL, PitBull, and Windows), Oracle/MS SQL database security, and Apache/IIS Web server security. + Support security planning, assessment, risk analysis, and risk management. + Identify overall security requirements for the proper handling of Government data. + Contribute to the security planning, assessment, risk analysis, risk management, certification and awareness activities for system and networking operations. + Configuration Management, LifeCycle Management and SharePoint familiarity. **Minimum Qualifications:** + Bachelor’s degree or 4+ years of additional professional experience in lieu of degree + 5+ years of cyber experience + Experience with ISSE + Familiarity with Certification & Accreditation (C&A) processes + Knowledge of Department of Defense (DoD) policy and technical security guidance applicable to information systems + DoD Directive 8570.1 IAT Level II or higher certification, or ability to obtain within 6 months **Security Clearance Requirements:** + Must have a current/active TS/SCI with Polygraph **Physical Requirements:** + The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve 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.