Security Engineer

About this role

Agile Defense seeks a Security Engineer to maintain and support the Enterprise Analysis System and Focused Operations networks in Springfield, VA. The role involves managing on-premises and cloud-based infrastructure, administering security tools, performing system maintenance, and ensuring compliance with change control processes while supporting the organization's critical national security missions.

What you'll do

• Maintain, configure, and install hardware and software across enterprise systems including firewalls, switches, threat detection tools, and forensic applications
• Implement automation, orchestration, and security monitoring capabilities; perform health assessments and monthly reporting on network wellness
• Administer PKI functions, manage certificates, and coordinate with change control boards to ensure proper approval and testing before production deployment
• Update and maintain operating systems, patch management servers, antivirus definitions, and backup systems; monitor logs for anomalies and security issues
• Design documentation including SOPs, technical specifications, and system diagrams for on-premises and cloud solutions
• Travel to system locations as needed for administration, repairs, and provide technical support to cross-functional teams

What they're looking for

• Network administration and infrastructure management
• Windows, macOS, and Linux/Unix system administration
• Firewall, router, VPN, and IDS/sensor configuration
• PKI and certificate management
• Patch management and WSUS administration
• Forensic tool administration (EnCase, FTK, Nuix)
• Change management and RFC/CCB processes
• Security monitoring and incident remediation