Senior Information Systems Security Engineer (Isse) - Must Have Active Ts/Sci Clearance

NorthHill Technology•Lorton, VA

1d•Onsite

About The Position

As a Senior Information System Security Engineer (ISSE), you will provide expert engineering support to ensure the confidentiality, integrity, and availability of mission-critical systems. This full-time, on-site position in Lorton, VA, requires an active TOP SECRET with SCI level clearance. You will perform technical security assessments, design secure solutions, automate reporting, and guide leadership on cybersecurity risks, vulnerabilities, and mitigation strategies. The role involves working with technologies such as ePO, Splunk, ACAS, Azure Automation, STIG/SCAP, Active Directory, and Azure security services to secure enterprise environments in alignment with DoD cybersecurity policies and standards.

Requirements

IAT/IAM/IASAE Level III (DoD 8570 compliant) certification.
Advanced Skills in Active Directory (AD DS, ADFS, AD CS, WSUS).
Advanced Skills in ePO, Splunk, STIG/SCAP, YUM, ACAS automation.
Advanced Skills in Azure VPN Gateways, Azure Monitor/Log Analytics.
Advanced Skills in SAP systems security.
Advanced Skills in GPOs.
Advanced Skills in SQL Server STIG hardening.
Proven, day-one depth of knowledge across ePO, ACAS, and Splunk.
Ability to build systems from scratch.
Troubleshooting experience with deployment and maintenance.
Understanding of how the tools are different when they move to hyperscale.
Ability to lead, guide and mentor other Information System Security Engineers.
Network compliance regulations knowledge.
Experience with Compliance & Frameworks (NIST, JSIG/RMF, SCTM).
Experience with Hyperscale, Architecture and Integration.
Automation & Reporting experience.
Ability to continuously improve processes and team velocity.
Ability to communicate complex security concepts to non-technical stakeholders.
8–12 years of demonstrated performance in related technology areas.
Bachelor’s degree in Computer Science, Engineering, or related field and 3+ years of leadership experience. OR equivalent professional experience.
Ability to travel up to 10%.
Active Top Secret with SCI Security Clearance.
Must be within driving distance of Lorton, VA OR willing to relocate there.
Must be willing to work onsite.
Must possess an active TS/ SCI clearance or above.
U.S. citizenship status.
Excellent communicator in writing and speaking.
Ability to work independently but also value teamwork.
Excellent problem-solving skills.

Nice To Haves

5+ years leadership experience in a related technical or cybersecurity area.
Technical certifications in Microsoft Azure or related cloud technologies.

Responsibilities

Perform and review technical security assessments of computing environments to identify vulnerabilities, compliance gaps, and recommend mitigations.
Architect and engineer innovative solutions to support ongoing Cyber Threat and Defensive Operations.
Provide functional expertise and technical recommendations to ISSOs, ISSEs, and ISSMs.
Automate threat assessment, posture reporting, and system monitoring activities.
Analyze system and organizational security posture trends and report findings to the ISSM/ISSO.
Recommend cybersecurity measures based on significant threats and vulnerabilities.
Implement security controls in alignment with confidentiality, integrity, availability, authentication, and non-repudiation principles.
Develop and recommend modifications based on exercise or test results.
Mitigate or recommend acceptance of identified risks and deficiencies during certification, testing, or operational reviews.
Act as a technical lead and mentor to engineers at all levels to elevate team capacity and performance.
Lead by example through high-quality engineering excellence.