Sr. Information Systems Security Engineer II

Sr. Information Systems Security Engineer II

Invictus Strategy & Solutions is a Service-Disabled Veteran-Owned Small Business (SDVOSB) providing strategic workforce solutions to mission-critical government and commercial operations. From cleared federal programs to complex industrial projects, we deliver top-tier professionals who drive performance, safety, and results. Our commitment to operational excellence and customer alignment makes us the partner of choice for organizations seeking agile and reliable talent solutions.

We are seeking a Sr. Information Systems Security Engineer II (ISSE) who brings deep expertise in securing classified systems, implementing required controls, and driving continuous monitoring within IL5 and IL6 environments. This role plays a critical part in protecting mission systems against evolving cyber threats through hands on security engineering, vulnerability analysis, and proactive risk mitigation.

This position is fully on site in Reston, Virginia and requires an active TS/SCI with CI Polygraph.

• Design, implement, and manage security solutions including firewalls, IDS IPS, endpoint protection, encryption, and access control technologies for classified environments
• Perform hands on Splunk log ingestion, normalization, correlation, and analysis to identify anomalies, threats, or behavioral indicators
• Conduct Crowd Strike investigations, endpoint alert triage, and host level containment
• Perform Atask and related vulnerability scans, evaluate findings, assign risk levels, and drive mitigation workflows
• Conduct recurring security assessments to identify weaknesses in networks, applications, and infrastructure
• Develop, refine, and maintain incident response procedures tailored to IL5 and IL6 systems
• Lead root cause analysis and escalation decision making during potential security incidents
• Support RMF lifecycle activities including control selection, implementation, assessment, and continuous monitoring
• Map NIST 800 53 controls to system components and validate proper compliance
• Validate inherited controls to ensure they are effective and not merely documented
• Build dashboards and monitoring automation to support continuous monitoring requirements
• Harden operating systems, network devices, cloud workloads, and application stacks in alignment with government baselines
• Apply Zero Trust principles across identity, segmentation, authentication, and data access
• Collaborate with engineering, IT, and development teams to integrate secure design without blocking delivery
• Produce clear documentation for control implementation, incident reporting, system diagrams, and compliance artifacts
• Support audits, A&A packages, system reviews, and technical briefings with leadership

• Bachelor’s degree in Computer Science, Information Security, or related field
• Seven or more years of cybersecurity engineering experience, including leading security control implementations
• Strong hands on experience with Splunk search, correlation, dashboards, and log analysis
• Direct experience with Crowd Strike endpoint security tools
• Experience performing Atask or similar vulnerability scans and interpreting results
• Proven background implementing and validating NIST 800 53 and RMF controls in classified environments
  
  Experience working within IL5 and IL6 security boundaries
• Strong understanding of network protocols, operating systems, and enterprise infrastructure
• Proficiency in incident response, containment, escalation decision making, and forensic analysis
• Experience with continuous monitoring, automation, and dashboard creation
• Solid understanding of Zero Trust concepts and practical implementation
• CISSP or equivalent certification meeting DoD 8140 requirements
• Strong communication skills, including the ability to explain complex security issues to technical and non technical partners

Invictus Strategy & Solutions is unable to provide sponsorship at this time. All applicants must be legally authorized to work in the United States without current or future sponsorship requirements.

Invictus Strategy & Solutions is an equal opportunity employer. All qualified applicants will receive consideration without regard to any protected characteristic.

135, USD per year (Reston, Virginia)