Administer and troubleshoot AWS GovCloud (US) infrastructure, including EC2, VPCs, subnets, route tables, Security Groups, NACLs, VPC endpoints, Route 53, load balancers, S3, RDS, IAM, CloudWatch, CloudTrail, Security Hub, and Systems Manager. This position extends beyond traditional network engineering and requires strong expertise in Cisco networking, Windows Systems Administration, virtualization, cybersecurity, and AWS GovCloud.