Systems Administrator

Administer and maintain AWS GovCloud (US) environments supporting classified workloads (IL4/IL5/IL6) Manage and support Windows Server-based systems in classified environments Ensure compliance with RMF, DISA STIGs, NIST 800-53, and FedRAMP High Configure and manage AWS services including EC2, IAM, S3, RDS, VPC, CloudWatch, CloudTrail, and KMS Implement and enforce Zero Trust Architecture (ZTA) and strong IAM practices Perform system patching, backups, vulnerability remediation, and compliance scanning using ACAS, SCAP, and other approved tools Support ATO packages, POA&Ms, and continuous monitoring efforts Implement centralized logging, monitoring, and alerting; integrate with SIEM tools such as Splunk or ELK Provide Tier 3 support, conduct root cause analysis, and assist with incident response Create and maintain system documentation, diagrams, and SOPs

We are seeking a mission-focused Systems Administrator with strong Windows Server and AWS GovCloud (US) experience to support classified Department of Defense environments. This role is ideal for a cleared professional who thrives in secure, compliance-driven infrastructures and enjoys hands-on operational ownership., Active DoD Secret Clearance (TS/SCI preferred) IAT Level II or III certification (Security+ CE, CASP+, CISSP, or equivalent) 3+ years of hands-on Systems Administration experience Strong experience with Windows Server administration Working knowledge of AWS GovCloud (US) services Experience operating in classified or highly regulated environments Familiarity with DoD cybersecurity frameworks (RMF, STIGs, NIST) Scripting or automation experience (PowerShell, Bash, Python, Terraform, or CloudFormation) Strong troubleshooting, documentation, and communication skills, Experience supporting IL5 or IL6 classified workloads Familiarity with AWS Organizations and Service Control Policies (SCPs) Exposure to DevSecOps, CI/CD pipelines, or container platforms (ECS/EKS) Experience working with DISA assessments or CCRI events GIS / Geospatial / ESRI experience is a strong plus