Information Systems Security Officer

acuCyber; Reston (VA); On-site; USD 90,000 - 130,000; Full time

Job summary

acuCyber is seeking an Information Systems Security Officer (ISSO) to support authorization and ongoing security for mission applications, cloud infrastructure, and enterprise services at a Government facility. The ISSO will connect security requirements to how systems are built and operated.

This role involves reviewing technical evidence, investigating compliance gaps, and working with engineers to resolve findings as software, infrastructure, and system configurations evolve.

Qualifications

• RMF/ATO process experience preferred
• Ability to translate security requirements into system design and operation
• Experience reviewing technical evidence and assessing compliance gaps
• Familiarity with DoD and IC security requirements

Responsibilities

• Support RMF activities to obtain and maintain ATO for systems across applicable classification levels.
• Develop and maintain authorization documentation (SSPs, control statements, boundary descriptions).
• Coordinate with system owners, ISSMs, assessors, and engineering teams to prepare authorization packages and resolve findings.
• Maintain POA&Ms, track remediation progress, and communicate unresolved risks.

Job description

acuCyber is seeking an Information Systems Security Officer (ISSO) to support the authorization and ongoing security of mission applications, cloud infrastructure, and enterprise core services. The ISSO will work with Government security personnel, software developers, and infrastructure engineers to maintain security documentation, assess risk, and ensure systems meet applicable Department of Defense and Intelligence Community requirements.

This role requires someone who can connect security requirements to how systems are built and operated. Candidates should be comfortable reviewing technical evidence, investigating compliance gaps, and working with engineers to resolve findings as software, infrastructure, and system configurations change.

This is a full-time, on-site role at a Government facility in Charleston, SC or the National Capital Region (NCR).

What You’ll Do:

• Support Risk Management Framework (RMF) activities to obtain and maintain Authority to Operate (ATO) for systems across applicable classification levels.
• Develop and maintain authorization documentation, including System Security Plans (SSPs), security control implementation statements, system boundary descriptions, and supporting evidence.
• Coordinate with system owners, Information System Security Managers (ISSMs), assessors, and engineering teams to prepare authorization packages and resolve assessment findings.
• Maintain Plans of Action and Milestones (POA&Ms), track remediation progress, and communicate unresolved risks and dependencies.
• Use the DISA Enterprise Mission Assurance Support Service (eMASS) to maintain authorization records, security control documentation, assessment evidence, and remediation status, as applicable.
• Review Assured Compliance Assessment Solution (ACAS) scan results, security configuration assessments, and application security testing reports; work with technical teams to prioritize and validate remediation.
• Assess the security impact of software releases, infrastructure changes, new integrations, and changes to the authorization boundary.
• Support continuous monitoring by maintaining current security evidence, reviewing control effectiveness, and reporting changes in system risk.
• Work with cloud and DevSecOps engineers to incorporate security requirements and evidence collection into development and deployment workflows.
• Review access controls, privileged access, audit logging, configuration baselines, and protection of sensitive data.
• Support security incident reporting, investigation, corrective actions, and updates to relevant documentation and procedures.
• Apply appropriate security overlays and support supply chain risk management activities.
• Prepare security status reports and brief Government stakeholders on authorization progress, findings, and remediation priorities.