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Information Systems Security Engineer (ISSE) - TS/SCI CI Poly

Tenica Gs

Chantilly, VA · Posted July 1, 2026

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About the job

Information Systems Security Engineer TS/SCI CI Poly

Department: Government Customer- Chantilly

Location: Chantilly, VA

MUST HAVE A TS/SCI Poly

The Information Systems Security Engineer (ISSE) provides support to the customer in the area of Cyber Security. Daily tasks include, but are not limited to:

Provide analytical and technical security recommendations to the customer

Lead the identification of projects’ security requirement

Participate in network design reviews and security testing for the customer’s networks

Coordinate with system development teams to ensure network security standards are followed and implemented correctly

Identify additional security requirements, based on RMF or as the result of security issues that put the customer’s systems at risk

Reviews and analyzes new systems (hardware and software) and provides recommendations concerning system security

Review Security Requirements Traceability Matrixes (SRTMs), System Security Plans (SSPs) and other IA documentation for completeness

Provide A&A and RMF guidance to system owners to ensure accreditation success

Qualifications:

Required:

Current U.S. Government Top Secret clearance with SCI eligibility

Favorably adjudicated Polygraph

Bachelors of Science Degree in Science, Technology, Engineering or Mathematics (STEM) or an advanced IA certification

DoD 8570 certification in IAT or IAM

Experience in security systems engineering involving various computer hardware and software operation systems and application solutions in both stand-alone and LAN/WAN configurations

Experience with security features and/or vulnerability of various operating systems as defined by NIST, DISA (STIGs), and USCYBERCOM

Experience with networks and systems security administration, operation systems security configuration and account management best practices

Experience implementing RMF Process and NIST 800-53 technical controls, as well as developing and maintaining associated certification and accreditation documentation

Desired:

Self-starter requiring limited direction and supervision

Experience briefing senior customer personnel

Ability to organize and prioritize numerous customer requests in a fast pace deadline driven environment

Familiarity with the customer’s Lifecycle Readiness process

Familiarity with Amazon Web Services (AWS)

Familiarity with customer's IA processes

Experience with IA vulnerability testing and related network and system test tools (i.e. retina, HBSS, EVSS, ACAS)

Experience with Splunk and ServiceNow

Familiarity with Cross Domain Systems (CDS)

Experience supporting IC or DoD in the Cyber Security Domain

TENICA is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.