Active Directory & Windows Server Administrator (Onsite)

Core Scientific, Inc.; Austin (TX); Hybrid; USD 95,000 - 130,000; Full time

Job summary

Core Scientific, Inc. seeks a strong Systems Administrator with deep Active Directory expertise. You will own the health, security, and day-to-day AD administration while collaborating across IT orgs to move toward modern best practices.

This on-site role in downtown Austin focuses on domain controllers, Group Policy, DNS/DHCP, and security hardening, with hybrid identity support and automation via PowerShell.

Qualifications

• 5+ years of hands-on systems administration experience.
• Very strong Active Directory expertise: domain services, GPOs, replication, trusts, sites and services, and directory security.
• Experience managing domain controllers, DNS, and DHCP in production.
• PowerShell skills for AD automation, reporting, and bulk operations.
• Understanding of AD security best practices: tiered admin models, delegation, privileged access, and common attack paths.
• Experience with hybrid identity concepts and directory synchronization to cloud platforms.
• Excellent written and verbal communication and strong documentation habits.
• On-site full-time in downtown Austin, TX.

Responsibilities

• Own day-to-day Active Directory administration: user, group, and computer object management, OU design, delegation, and directory hygiene.
• Design, maintain, and troubleshoot Group Policy across the environment, consolidating, documenting, and enforcing effective GPOs.
• Administer and maintain domain controllers, including replication health, FSMO roles, backups/recovery, and patching.
• Manage core network services tied to the directory: DNS and DHCP, plus site/subnet topology.
• Harden and secure the directory: tiered administration, privileged access management, and remediation of attack paths.
• Support hybrid identity and cloud synchronization for directory services.
• Automate routine directory tasks with PowerShell and generate reports.
• Participate in audits and access reviews with clear evidence from the directory.
• Document architecture, runbooks, and processes to keep the environment supportable.
• Collaborate with identity, security, and endpoint teams; communicate professionally within and across teams.

Skills

Active Directory

PowerShell

Windows Server

Networking fundamentals

Troubleshooting

Documentation

Communication

Hybrid identity

Tools

Okta

Microsoft 365

Entra ID

Intune

Jamf Pro

Slack administration

Jira Service Management

Workday

Job description

Core Scientific, Inc. seeks a strong Systems Administrator with deep Active Directory expertise. You will own the health, security, and day-to-day AD administration while collaborating across IT orgs to move toward modern best practices.

This on-site role in downtown Austin focuses on domain controllers, Group Policy, DNS/DHCP, and security hardening, with hybrid identity support and automation via PowerShell.