Are you looking for an opportunity to deepen your information system security skills in a meaningful work environment that supports and protects explorers and heroes Join our team! As a Senior Systems Security Engineer, you will be using your skills and expertise to help design, test, and implement secure operating systems, network capabilities, security monitoring, and tuning. You will be responsible for securing and managing information systems and applications, incident response, digital forensics, loss prevention and eDiscovery actions, conducting risk and vulnerability assessments, and developing and implementing security controls. You'll research, evaluate, and recommend new security tools, techniques, and technologies in alignment with our information system security strategy.The Mission Solutions and Technologies (MST) business area provides affordable, turn-key command/control, communications, integrated ISR, force protection and security solutions worldwide. The MST team has a long legacy of supporting the Department of Defense, Department of Homeland Security, commercial and international customers with years of experience in platform operations, engineering and full lifecycle management across domains – air, land, sea, space and cyber.Responsibilities:Create, prepare, and maintain a client-server network for Assessment and Authorization (A&A) in accordance NIST SP 800-53 using established DoD guidelines.Manage/schedule mandatory Information System (IS) patching, updating, and scanning based on vulnerabilities and threats or regulatory compliance; maintain the day-to-day security posture and continuous monitoring for the systems under your purview.Develop and maintain documentation: System Security Plan, Plan of Action & Milestones (POA&M), Software/Hardware Inventory, Network diagrams, Risk Assessment Report, Contingency Plan, Incident Response Plan, Configuration Management, etc.Conduct security control assessments; review the adequacy of the security controls and their ability to protect the system and its information; tailor the security controls to ensure compliance.Interface with company and customer staff at multiple levels and provide system security guidance.Conduct continuous monitoring activities such as vulnerability management, incident response, and accreditation record maintenance in XACTA.20% estimated travelQualifications You Must Have:Bachelor's degree in Systems Security, Network Engineering, Information Technology, or related Engineering discipline and typically 10 years of relevant experienceRelevant experience an ISSM, ISSE, ISSO, etc. may be considered in lieu of required educationKnowledge of technical standards relating to systems security; experience administering Windows, UNIX, and Linux operating systems, experience with large-scale server systems, system virtualization and other related peripherals a plus.Experience in supporting information systems within a classified environment.Experience working with security control compliance and vulnerability assessment tools such as SCAP Compliance Checker and ACAS / Tenable Nessus.DoD 8140 compliant – Intermediate or Advanced.Ability to manage time, make sound decisions, take independent action, analyze problems and provide focused solutions.Strong communication skills, strong critical thinking and problem solving skills; ability to work with people in a team environment and deal effectively with changing project prioritiesMust be a US Citizen.An active Top Secret clearance with SCI eligibilityQualifications We Prefer:ISSM CAP, CISSP, or CISM certificationISSE CAP, CISSP-ISSEP certificationMicrosoft, Linux, Dell, Cisco, Splunk, certification/proficiencyVirtualization experience, like VMwareExperience maintaining system accreditations in XACTASNC offers annual incentive pay based upon performance that is commensurate with the level of the position.SNC offers a generous benefit package, including medical, dental, and vision plans, 401(k) with 150% match up to 6%, life insurance, 3 weeks paid time off, tuition reimbursement, and more.IMPORTANT NOTICE:This position requires current/active Top Secret with SCI eligibility U.S. Security Clearance. U.S. Citizenship status is required as this position needs an active U.S. Security Clearance for employment. Non-U.S. Citizens may not be eligible to obtain a security clearance. The Department of Defense Consolidated Adjudications Facility (DoD CAF), a federal government agency, handles the adjudicative aspects of the security clearance eligibility process for industry applicants. Adjudicative factors which affect the outcome of the eligibility determination include, but are not limited to, allegiance to the U.S., foreign influence, foreign preference, criminal conduct, security violations and illegal drug use.Learn more about the background check process for Security Clearances.SNC is a global leader in aerospace and national security committed to moving the American Dream forward. We’re known and respected for our mission and execution focus, agility, and disruptive and rapid innovation. We provide leading edge technologies and transformative solutions that support our nation’s most critical security needs. If you are mission-focused, thrive in collaborative environments, and want to make our country stronger with state-of-the-art technologies that safeguard freedom, join our team!SNC is an Equal Opportunity Employer committed to an environment free of discrimination. Employment decisions are made based on merit without regard to race, color, age, religion, sex, national origin, disability, status as a protected veteran or other characteristics protected by law.