Senior Systems Administrator
Core
Maintain, monitor, and troubleshoot critical cloud and on-premises infrastructure to ensure secure, reliable operations for mission-critical systems.
Role type
Senior Systems Administrator (Infrastructure & Security)
Builds
Secure, automated, and reliable IT infrastructure supporting cloud-native and on-premises environments
Domain
Defense/Space sector, Cloud Infrastructure, Cybersecurity
Deliverable
infrastructure
Required skills
Linux systems administration, Active Directory administration, Cloud IAM, Networking fundamentals, Infrastructure as Code (Ansible, Terraform, Kubernetes, Docker), Troubleshooting and debugging, ITSM/Ticketing workflows, Documentation
Preferred skills
CISSP or CEH certification, Advanced Ansible/Terraform/Kubernetes in classified environments, Linux certifications (RHCSA, RHCE, LPIC), CI/CD pipelines, DevSecOps practices
Technologies
Ansible, Terraform, Kubernetes, Docker, Packer, AWS, Confluence, Jira
Responsibilities
Maintain and support system network integrity through configuration management; Perform daily maintenance, monitoring, and troubleshooting of applications and systems; Serve as primary escalation point for infrastructure incidents; Administer Active Directory including GPO and access controls; Build and maintain automation workflows; Coordinate with security teams to meet DoD standards; Support 24/7 operations including shift work; Mentor junior administrators.
Seniority
Senior, hands-on IC with mentorship responsibilities