ISSO - Information System Security Officer

Soliel, LLC is an accomplished and innovative Woman Owned Small Business (WOSB) delivering IT engineering and critical mission support services to the public sector. Soliel offers reach-back to experts in each field, a culture that supports employee growth and development, and a stable environment that affords cross-collaboration. We are currently seeking an Information System Security Officer (ISSO) to support our DoD customer at Fort Meade.

The ISSO will support cybersecurity, Risk Management Framework (RMF), and Authorization to Operate (ATO) activities while also providing hands-on support for vulnerability assessment and remediation using DISA STIGs and ACAS/Nessus. The position will work closely with systems, network, and cybersecurity personnel to maintain system security and authorization throughout the system lifecycle. This aligns with the DMZ PWS requirements for RMF/A&A, vulnerability remediation, eMASS, STIGs, Nessus, and cybersecurity support.

Location: Fort Meade, Maryland

Start Date: ASAP

Clearance: Top Secret

Key Responsibilities:

· Support RMF and A&A activities, including development and maintenance of ATO artifacts, security controls, POA&Ms, and eMASS records.

· Review ACAS/Nessus and DISA STIG findings, assess compliance impact, and coordinate remediation activities with Network and Systems Engineers.

· Track vulnerabilities and security findings through remediation and closure, validating supporting evidence and maintaining accurate authorization documentation.

· Support continuous monitoring, security assessments, configuration changes, and customer cybersecurity reviews.

· Prepare cybersecurity documentation, reports, and briefings for Government and program stakeholders.

Required Skills:

· 5+ years of experience in cybersecurity, information assurance, ISSO, or RMF roles supporting DoD or federal systems.

· Hands-on experience supporting RMF/ATO packages and working in eMASS.

· Strong experience reviewing and managing DISA STIG and ACAS/Nessus findings, including POA&M development and remediation tracking.

· Working knowledge of NIST SP 800-53, DoDI 8510.01, and DoD cybersecurity requirements.

· Active Top Secret clearance and DoD 8570 IAM Level 1 or higher cybersecurity certification.

Preferred Skills:

· Prior experience supporting DISA programs.

· Experience working closely with Network and Systems Engineers to coordinate vulnerability remediation.

· Experience supporting classified NIPRNet/SIPRNet or DMZ environments.

EEO/ AA/ NON-DISCRIMINATION STATEMENT: Soliel, LLC is an Equal Opportunity/ Affirmative Action/ Non-Discriminatory Employer. All qualified applicants will receive equal consideration for employment without regard to race, color, national origin, religion, sex, pregnancy, marital status, sexual orientation, gender identity, age, physical or mental disability, or covered veterans. To learn more, please visit