Information Systems Security Officer

Resource Management Concepts•Charleston, SC

About The Position

Resource Management Concepts, Inc. (RMC) 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 position is contingent on contract award and position availability. 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. The role connects security requirements to how systems are built and operated, including reviewing technical evidence, investigating compliance gaps, and working with engineers to resolve findings as software, infrastructure, and system configurations change.

Requirements

Bachelor’s degree in a technical or managerial field and 5+ years of cybersecurity, engineering, T&E, or A&A experience; or a high school diploma/equivalent and more than 7 years of relevant experience.
Active TS/SCI clearance with CI Polygraph.
Prior Intelligence Community support experience.
ISSO or comparable experience supporting RMF activities and system authorization packages.
Proficiency with eMASS and ACAS.
Experience documenting security controls, collecting assessment evidence, reviewing vulnerability and configuration findings, and tracking remediation.
Knowledge of applicable Department of War and Intelligence Community security requirements and assessment processes.
Understanding of system boundaries, data flows, access controls, audit logging, configuration management, and continuous monitoring.
Ability to assess system-change risks and communicate them to technical and nontechnical stakeholders.
Strong technical writing, organizational, and communication skills.
Ability to meet applicable cybersecurity workforce requirements, including Full Security Control Assessor qualification if required.

Nice To Haves

DoD 8140/8570 IAM Level II or III qualifications and relevant certifications, such as CISSP, CISM, or CAP/CGRC.
IC authorization experience under ICD 503 and agency guidance.
AWS/AWS GovCloud security assessment experience, including DoD Impact Level 5 environments.
Familiarity with Kubernetes/OpenShift security, including workload isolation, access controls, image security, and logging.
Experience using DevSecOps security testing and deployment evidence for assessments and continuous monitoring.
Experience applying STIGs, validating configurations, and supporting security control assessments.
Familiarity with ICAM, PKI, certificate management, encryption, and secrets management.
Experience assessing Zero Trust controls across identities, devices, networks, applications, and data.

Responsibilities

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 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.