Staff Information Systems Security Officer (R5789)

We are seeking a detail-oriented and mission-driven Staff Information Systems Security Officer (ISSO) to support our Federal Systems Team and ensure the security, compliance, and integrity of our classified information systems. This is an on-site role within a high-performance classified IT environment.
The Staff ISSO will play a critical role in safeguarding systems by implementing and maintaining cybersecurity controls, supporting system accreditation, and ensuring compliance with DoD and Intelligence Community (IC) security requirements. This role is central to enabling secure operations across multiple classification levels, including environments leveraging Cross Domain Solutions (CDS). 

Implement and monitor cybersecurity controls in accordance with RMF and NIST 800-53

Ensure compliance with DoD and IC requirements

Review configurations, audit logs, and controls regularly

Support RMF lifecycle activities

Maintain SSPs, POA&Ms, and related artifacts

Coordinate with ISSM, AO, and stakeholders

Perform vulnerability management and patch tracking

Analyze scan results (ACAS/Nessus)

Report system risk posture

Support incident response activities

Assist with audits and inspections

Maintain audit-ready documentation

Support CDS accreditation and compliance

Validate configurations and data flows

Coordinate with CDS administrators

Ensure STIG compliance

Maintain secure baselines

Review configuration changes

Work with engineers and admins on secure design

Provide guidance on MLS environments

8 years in cybersecurity or ISSO roles in classified environments

Experience with RMF and NIST 800-53

Familiarity with STIGs and vulnerability tools

IC or SAP environment experience

eMASS familiarity

Scripting experience (Python, PowerShell, Bash)

Bachelor’s degree or equivalent experience