Principal / Senior Principal Cyber Systems Administrator

What you'll do

• Administer Linux and Windows servers, virtualized environments, and cloud-based data pipelines.
• Design and maintain core network services including DHCP, DNS, VPN, routing, and firewall policies.
• Implement secure communications using HTTPS, TLS/mTLS, PKI, and certificate-based authentication.
• Lead automation and configuration management using Ansible and Git-based workflows.
• Engineer and maintain monitoring and observability solutions like Prometheus and Grafana.
• Execute system hardening, patching, and IAVA/IAVM remediation with clear documentation.
• Support secure data collection and transfer to Army-authorized cloud environments like AWS.
• Provide Tier-3/4 subject matter expert support for complex incidents and field deployments.

What we're looking for

• U.S. citizenship and an active DoD Secret clearance are required.
• A Bachelor’s degree in a STEM discipline and 5+ years of experience are required for Principal level, or a Master’s degree and 3+ years.
• A Bachelor’s degree in a STEM discipline and 5+ years of experience are required for Sr. Principal level, or a Master’s degree and 6+ years.
• Extensive experience is required in administering Linux and Windows servers in production or mission-critical DoD or enterprise environments.
• Experience is required with virtualization platforms (VMware, KVM, Hyper-V) and cloud environments like AWS.
• Experience is required in configuring network services (DHCP, DNS, routing, VPNs, firewalls) and managing PKI, TLS/mTLS, and certificate lifecycles.
• Experience is required with Ansible, Git, and monitoring stacks like Prometheus or Grafana.
• Knowledge of NIST SP 800-53, RMF, and STIGs is required, along with experience in patching and vulnerability remediation.