Senior ISSO - Security Accreditation & Risk Lead (OnSiteDC)

ManTech

Washington (District of Columbia)

On-site

USD 140,000 - 190,000

Full time

14 days+

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Job summary

MANTECH seeks a Senior ISSO to join our Washington, DC team in an on-site role. You will support accreditation efforts and create Body of Evidence (BOE) documentation while implementing required controls.

Ideal candidates have 10+ years of information systems security experience or a Master’s with 7+ years, plus certifications (CISM, CISSP, CISSP-ISSMP, GCIA, GCIH, GICSP, GSLC) and hands-on with Nessus, Security Center, Guardium, WebInspect, and NMAP; TS/SCI clearance preferred.

Qualifications

10+ years of information systems security experience, or a Master’s with 7+ years.
Bachelor’s Degree or equivalent (6 additional years of experience).
Must possess one or more relevant industry certifications such as CISM, CISSP, CISSP-ISSMP, FITSP-M, GCIA, GCIH, GICSP, or GSLC.
Significant experience navigating technical accreditation processes, meeting strict security requirements, and creating A&A BOE documentation.
Familiarity with security tools including Nessus, Security Center, Guardium, WebInspect, and NMAP.

Responsibilities

Create, update, maintain, and interpret BOE documentation for accreditation processes.
Ensure day-to-day implementation, oversight, and maintenance of system security configurations and practices.
Conduct vulnerability scans, review reports, and perform vulnerability analysis.
Develop and track Plans of Action and Milestones (POAMs) to mitigate risks.
Coordinate with system owners, ISSMs, and teams to diagnose issues and implement security solutions.
Document and implement plans detailing security postures, configurations, and secure remote access for applications.