Systems Administrator III (Domain & Server) (JSF)

AMERICAN SYSTEMS•Point Mugu NAWC, CA

1d•$82,100 - $131,360

About The Position

The Systems Administrator III (Domain & Server) is responsible for administering, maintaining, and optimizing enterprise IT infrastructure, including Microsoft Server environments and domain services. The role manages Active Directory, Exchange Server, DNS, and DHCP, and oversees Linux and Windows server environments to support performance, security, and availability. It also includes system monitoring, troubleshooting, security implementation, user account and permission management, and collaboration with cross-functional teams to support organizational technology needs.

Requirements

Must be a U.S. citizen.
Must have an active Secret clearance with the ability to obtain Top Secret with SCI eligibility, or an active Top Secret clearance with SCI eligibility; subject to a federal background investigation.
At least 5 years of systems administration experience, including hands-on experience in Windows and Linux environments.
Current 8570/8140 IAT Level II certification: CCNA Security, CySA+, GICSP, GSEC, Security+ CE, CND, or SSCP.
Advanced technical expertise in server administration, domain management, and infrastructure planning.
Proficiency managing Active Directory, DNS, DHCP, and Group Policy in large-scale environments.
Strong experience with virtualization technologies such as VMware or Hyper-V.
Skill in storage management, including SAN and NAS solutions, and backup and recovery operations.
Experience with automation tools such as PowerShell, Ansible, or Terraform.
Ability to work independently while managing multiple priorities in a fast-paced enterprise environment.
Strong troubleshooting skills for diagnosing and resolving complex system issues.
Strong communication skills and ability to work effectively in a team-oriented environment.

Nice To Haves

Familiarity with cloud platforms such as AWS, Azure, or GCP and hybrid cloud environments.
Knowledge of security frameworks and compliance requirements, including NIST, FISMA, or DISA STIG.

Responsibilities

Administer and maintain Windows and Linux servers to ensure high availability and performance.
Manage deployment, configuration, and maintenance of operating systems and applications, including patch management.
Support VMware, Hyper-V, or other virtualization environments to optimize resource utilization.
Implement security measures, including access control, system hardening, and vulnerability remediation.
Manage SAN and NAS storage solutions and backup and recovery operations.
Assist with system upgrades, migrations, and disaster recovery planning and execution.
Develop and update documentation for system configurations, procedures, and troubleshooting.
Troubleshoot complex system issues and respond to incidents to ensure timely resolution.
Collaborate with network, security, and application teams to improve infrastructure.
Contribute technical expertise to the design and implementation of new systems and infrastructure enhancements.
Manage Active Directory, Exchange Server, DNS, DHCP, Group Policy, user accounts, and permissions.