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ManTech is seeking a motivated, career and customer-oriented **Senior Information System Security Engineer (ISSE)** to join our team **in Chantilly, VA.**

Responsibilities include, but are not limited to:

+ Identify information protection needs for an IS and Network Environment.

+ Define IS and Network Environment security requirements in accordance with applicable cybersecurity requirements. Design security architectures for use within the IS and Network Environment. Design and develop cybersecurity-enabled products for use within an IS and Network Environment.

+ Integrate and/or implement security with Cross Domain Solutions (CDS) for use within an IS and Network Environment.

+ Develop and implement security designs for new or existing network system(s). Ensure that the design of hardware, operating systems, and software applications adequately address cybersecurity requirements for the IS and Network Environment. Develop interface specifications for the IS and Network Environment. Develop approaches to mitigate IS and Network Environment vulnerabilities and recommend changes to network or network system components as needed.

+ Design, develop, and implement network security measures that provide confidentiality, integrity, availability, authentication, and non-repudiation. Design, develop, and implement specific cybersecurity countermeasures for the IS and Network Environment.

+ Ensure that network system(s) designs support the incorporation of FBI directed cybersecurity vulnerability solutions.

Minimum Qualifications:

+ Bachelor’s Degree and 8 years' experience, or equivalent education/experience;

+ Doctorate plus 6 years

+ Master’s plus 6 years

+ Associates plus 10 years

+ H.S./GED plus 14 years

+ Maintain an active IASAE Level III certifications or one of the following certifications: Certified Information Systems Security Professional (CISSP) (or Associate), CompTIA Advanced Security Practitioner (CASP) CE (Security X), Certified Secure Software Lifecycle Professional (CSSLP), CISSP- Information System Security Engineering Professional (ISSEP), or CISSP- Information System Security Architecture Professional (ISSAP).

+ Familiarity with the use and operation of security tools including: Tenable Nessus and/or Security Center, IBM Guardium, HP WeblInspect, Network Mapper (NMAP), and/or similar applications.

+ Experience working in a cloud environment, Amazon Web Services (AWS) or Microsoft Azure, Oracle Cloud Platforms, Google Cloud Platforms, ect.

Preferred Qualifications:

+ Degree in Computer Science, Cybersecurity, or other cyber discipline.

Security Clearance Requirements:

+ Must have a current/active Top Secret security clearance with eligibility to obtain SCI. Applicants may also be required to undergo 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.

+ Often positions self to maintain computers in the lab, including under the desks and in the server closet.

+ Frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

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 [email protected] and provide your name and contact information.