Senior Security/Threat Engineer

Overview DecisionPoint seeks a Senior Security/Threat Engineer to provide senior-level leadership and advanced expertise across enterprise cybersecurity monitoring, threat detection, vulnerability management, and incident response for systems supporting a federal and DoD-aligned mission environment. This position oversees threat intelligence integration, SIEM analytics, log correlation, ACAS/Nessus scanning, STIG validation, patch compliance verification, and execution of the Continuous Monitoring Plan. The Senior Security/Threat Engineer plays a critical role in detecting, analyzing, and responding to sophisticated threats while ensuring continuous risk reduction and cybersecurity readiness across mission applications, cloud workloads, and enterprise platforms. This position is fully remote. Duties & Responsibilities The Senior Security/Threat Engineer will: Lead enterprise threat monitoring, detection engineering, and cybersecurity analytics functions. Oversee ACAS/Nessus scanning operations, vulnerability trending, severity analysis, and remediation coordination. Manage SIEM alerting, log correlation, advanced query development, and threat detection tuning. Conduct threat hunting activities to identify anomalous behavior, emerging threats, or latent indicators of compromise. Validate STIG implementation, patch compliance, and secure configuration baselines across systems. Execute and maintain the Continuous Monitoring Plan including scanning schedules, reporting cycles