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ISSO Assessor

SESRockville, MD🇺🇸United StatesPosted 7 Jul 2026

Quick Overview

Work Type
Hybrid
Level
Mid Senior

Job Description

Systems Engineering Services is seeking a ISSO Assessor based in the Rockville, MD area. this will require work In Office.

This is a hybrid position based in Rockville, MD (3 days in office / 2 days remote) with a Public Trust clearance requirement.

Key Responsibilities:

  • Conduct security control assessments in accordance with NIST RMF, NIST SP 800-53, and FedRAMP requirements
  • Perform vulnerability testing, control validation, and security assessments across federal systems
  • Document assessment findings, develop POA&Ms, and track remediation efforts
  • Collaborate with system owners and ISSOs to ensure controls are properly implemented and maintained
  • Support ATO package development, continuous monitoring activities, and authorization boundary definition
  • Utilize ServiceNow for ticketing, workflow, and A&A documentation (integration experience highly valued)
  • Provide recommendations to improve the client s security posture and streamline assessment processes

Required Qualifications:

  • 3+ years of experience performing security assessments or A&A work in a federal environment
  • Strong working knowledge of NIST SP 800-53, NIST RMF (800-37), and federal authorization processes
  • Experience with vulnerability scanning, control testing, and POA&M management
  • Ability to obtain and maintain a Public Trust clearance (U.S. Citizenship required)
  • Strong written and verbal communication skills with the ability to produce clear, professional assessment documentation
  • Willingness to work hybrid schedule (3 days onsite in Rockville, MD)

Preferred Qualifications:

  • Prior experience supporting NIH, HHS, or other health-related federal agencies
  • Hands-on experience with ServiceNow GRC / ITSM modules for A&A workflows
  • Familiarity with Tenable, Microsoft Defender for Endpoint, or similar security tools
  • Experience supporting large portfolios of systems and managing multiple ATOs simultaneously
  • CISSP, CISM, CAP, or similar security certification

Jake Lutman

Technical Recruiter

Systems Engineering Services

Skills

ServiceNow

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