Information System Security Officer (ISSO)

OMNI Consulting Solutions
Chantilly, Loudoun County, VA

Position Title: Information System Security Officer (ISSO)
Location: Chantilly, VA
Clearance: Active TS/SCI required
U.S. Citizenship required

OMNI Consulting Solutions is seeking for an Information System security Officer to Executes day-to-day cybersecurity activities in support of the ISSM, including system audits, user account reviews, security monitoring, compliance tracking, and documentation maintenance.

Key Responsibilities

  • Execute day-to-day cybersecurity operations for assigned information systems in support of the ISSM.

  • Conduct system audits, log reviews, and user account/access reviews for compliance with security policy.

  • Monitor system security posture and support continuous monitoring and vulnerability scanning activities.

  • Maintain and update system security documentation, including SSPs, POA&Ms, and configuration records.

  • Support RMF assessment and authorization activities, including evidence collection for control implementation.

  • Track and report security-relevant events, incidents, and compliance findings to the ISSM.

  • Support account provisioning/de-provisioning and access control administration.

  • Assist with security awareness training and enforcement of system security procedures for end users.

  • Bachelor's degree in a technical field (Computer Science, Information Technology, Cybersecurity, or related) or equivalent experience.

  • Active TS/SCI clearance.

  • Experience (10+ years) in cybersecurity/information assurance or systems security administration.

  • DoD 8570/8140 IAT/IAM Level II certification (e.g., Security+, CySA+, CISSP-Associate, or equivalent).

  • Working knowledge of RMF processes and system audit/monitoring procedures.

  • Familiarity with system hardening and access control administration on classified networks.

Preferred Qualifications

  • CI polygraph.

  • Experience with eMASS, ACAS, and/or HBSS/ESS tools.

  • Prior ISSO experience on IC or USSF/DoD programs.

Why Join OMNI?
OMNI Consulting Solutions is a boutique consulting firm specializing in creating game-changing value and simple solutions for complex demands. OMNI is built on the idea that change moves the world forward, and through creative and entrepreneurial leadership OMNI maintains a bold reputation within the DoD/Aerospace community and across the various other industries we support.

As an OMNI employee, you can be assured of extensive growth opportunities, inordinately competitive salary compensation packages, and the unparalleled support of the OMNI family. We are an equal-opportunity employer, and our benefits packages are designed to meet the needs of all our employees and dependents:

  • Medical Coverage

  • Dental Benefits

  • Vision Benefits

  • Life Insurance

  • 401(k) Retirement Plan with Employer Matching

  • Fully Vested on Day 1 of Employment

  • Paid Time Off & Sick Leave

  • Company Sponsored Social Events

Is It a Match?

If you are interested in this position or other opportunities at OMNI, please let us know! We only need your resume and some basic details to get things started.

Even if you aren't a match, we may still be interested! We will keep your resume on-file and will let you know if something matching your skills comes along.

Job Code (7.26.9)

Posted 2026-08-20

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