Cleared Information Systems Security Engineer (ISSE) L3 - Lorton, VA

Information System Security Engineer (ISSE) - L3 Virtual Service Operations is searching for an Information System Security Engineer (ISSE) to join our dynamic team of experts in Lorton, Virginia. As an ISSE, you will be responsible for conducting security assessments, engineering secure solutions, automating defensive cyber activities, and advising leadership on risks and mitigation strategies. Candidates should bring expertise with technologies such as ePO, Splunk, ACAS, Azure Automation, STIG/SCAP, and Active Directory to secure complex mission systems and ensure compliance with DoD cybersecurity standards. As a part of this team you will support the development and sustainment of secure enclaves, providing enterprise services and cyber network defense capabilities. Key Responsibilities: Perform and review technical security assessments of computing environments to identify vulnerabilities and compliance gaps. Engineer unique cybersecurity solutions to support Cyber Threat and Defensive Operations. Configure, deploying, and sustain cyber security tools such as (ACAS, ePO, Splunk, STIG/SCAP, YUM) in a cloud environment. Configure Entra ID and Azure security services / tools as they relate to ATO achievement. Automate security monitoring, threat assessments, and reporting functions. Analyze system and organizational security posture trends; provide findings to the ISSM/ISSO. Recommend cybersecurity measures and mitigations based on evolving threats and vulnerabilities. Implement security controls in alignment with DoD policies and principles of confidentiality, integrity, availability, authentication, and non-repudiation. Recommend and plan modifications based on exercise results and security testing outcomes. Mitigate or recommend acceptance of identified risks and deficiencies during certification and testing activities. National Guard Employment Network