What are the responsibilities and job description for the Information Systems Security Engineer - TS / SCI with Polygraph position at Modern Government Solutions?
TITLE : Information Systems Security Engineer (ISSE)
LOCATION : Tysons, VA
CLEARANCE REQUIRED : Active DoD TS / SCI Clearance
EMPLOYMENT TYPE : Full-time, On-site
TRAVEL : Up to 30%
POSITION SUMMARY
Modern Government Solutions (MGS) is seeking an Expert ISSE to provide expertise on security requirements for the design, implementation, and deployment of high-performance compute, storage, and network infrastructures. The role serves as the primary advisor to the program Chief Engineer and a liaison to Accrediting Officials, focusing on security-related design and accreditation policies. Responsibilities may also include COMSEC support and on-site systems integration.
RESPONSIBILITIES (not limited to) :
The Expert ISSE implements and maintains information security controls associated with development, delivery, and continuous monitoring of complex, high performance, mission critical information technology systems.
- Develop, implement, and review security requirements, plans, and documentation to ensure system compliance with RMF, ICD 503, and NISPOM standards, including system security plans, traceability matrices, and disaster recovery.
- Perform security assessments, risk analysis, and continuous monitoring across networks, systems, and cloud environments, coordinating with stakeholders to optimize compliance and mitigate vulnerabilities.
- Provide guidance on system accreditation, authority to operate / connect processes, and secure deployments, leveraging tools such as NESSUS, HBSS, and NetWitness.
- Support the A&A lifecycle, including system hardening, software assessments, test planning, and Information Security Assessment Program reviews.
- Collaborate with development teams, engineers, and security offices to ensure adherence to security standards across diverse network platforms.
REQUIRED SKILLS AND QUALIFICATIONS
Work experience in relevant fields may be considered for equivalency.
PREFERRED SKILLS AND QUALIFICATIONS
ABOUT US
At MGS, we believe a people-first culture corresponds to organizational success through a commitment to excellence, integrity, inclusion, and an attitude that welcomes challenges meets demands, sustains growth, and drives innovation. We provide expert mission-first technical and programmatic services and solutions for the US intelligence community, the US Department of Defense, and other governmental agencies. We create people-first organizational cultures where employees feel needed in the system, not a system that needs employees. We provide you with long-term career opportunities centrally focused on our core value system : inclusion, integrity, and a commitment to excellence.
MGS 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.
