ManTech seeks a Cyber Security Engineer in support of our government customer at Aberdeen Proving Grounds, MD. **Responsibilities include but are not limited to:** + Oversee and implement security configurations, practices, and procedures for information systems (IS). + Liaise between system owners and security personnel. + Manage the complete lifecycle of security controls, ensuring effectiveness and compliance. + Maintain continuous oversight of system security documentation. + Conduct vulnerability scans as per risk assessment guidelines. + Develop and manage POAMs in response to security vulnerabilities. + Coordinate system owner approvals for corrective or mitigation actions. + Monitor security controls to maintain ISs’ ATO status. + Served primary focal point for System Security Programs **Minimum Qualifications:** + Bachelor’s or advanced degree in Computer Science, Cybersecurity, or related cyber discipline. + Minimum of 7 years’ experience as an ISSO at a cleared facility to include the following: + Experience with developing Assessment packages for Determination. + Experience with Briefing Executive level officers. + Experience with security tools such as Tenable Nessus/Security Center, eMASS or similar applications. + IAT Level III **Preferred Qualifications:** + Certified Information System Security Professional, Certified Governance Risk and Compliance **Clearance Requirements:** + Active Top-Secret clearance with SCI eligibility **Physical Requirements:** + Stationary position 50% of the time. + Occasional movement within the office. + Operation of standard office equipment. + Occasionally positions self to maintain computers, including under desks and in server closets. + Frequent communication with team members and stakeholders. 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.