System Administrator

Who We Are
Core Scientific is a leading provider of infrastructure for high-performance compute in North America. Our mission is to accelerate digital innovation by scaling high-value compute rapidly, efficiently, and responsibly. We transform energy into high-value compute with unmatched efficiency at scale. Core Scientific is a publicly trade company (NASDAQ: CORZ).
We power AI, HPC, and other next-generation data center workloads demanding exceptional computing power, in addition to our digital asset mining operations. Our footprint consists of 11 data center campuses across seven states, housing advanced infrastructure for our customers.
What sets us apart? We have an entrepreneurial culture, a "can-do" and collaborative attitude, and we own and control our infrastructure. These strategic advantages enable us to maintain operational excellence, increase efficiency, and rapidly deploy cutting-edge innovations developed by our team of experts.
Join us and accelerate your career alongside our groundbreaking journey. We seek smart, creative, and collaborative professionals who thrive in a fast-paced, result-driven environment. Ready to be part of something exceptional? Apply today and make an impact at Core Scientific.
Who We Are
Core Scientific is a leading provider of infrastructure for high-performance compute in North America. Our mission is to accelerate digital innovation by scaling high-value compute rapidly, efficiently, and responsibly. We transform energy into high-value compute with unmatched efficiency at scale. Core Scientific is a publicly traded company (NASDAQ: CORZ).
We power AI, HPC, and other next-generation data center workloads demanding exceptional computing power, in addition to our digital asset mining operations. Our footprint consists of 11 data center campuses across seven states, housing advanced infrastructure for our customers.
What sets us apart? We have an entrepreneurial culture, a "can-do" and collaborative attitude, and we own and control our infrastructure. These strategic advantages enable us to maintain operational excellence, increase efficiency, and rapidly deploy cutting-edge innovations developed by our team of experts.
Join us and accelerate your career alongside our groundbreaking journey. We seek smart, creative, and collaborative professionals who thrive in a fast-paced, result-driven environment. Ready to be part of something exceptional? Apply today and make an impact at Core Scientific.
The Job
We're looking for a strong generalist Systems Administrator whose core expertise is Active Directory. You'll own the health, security, and day-to-day administration of our AD environment — domain controllers, Group Policy, DNS/DHCP, and the directory structure that everything else depends on — while contributing across the broader IT environment as a versatile, hands-on administrator.
Directory services sit at the foundation of how our users, devices, and applications work together, so you'll partner closely with identity, security, and endpoint teams to keep the environment clean, well-governed, and moving toward modern best practices.
This position is fully on-site at our downtown Austin office.
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, keeping GPOs consolidated, documented, and effective
Administer and maintain domain controllers, including replication health, FSMO roles, backups/recovery, and patching
Manage core network services tied to the directory: DNS, DHCP, and site/subnet topology
Harden and secure the directory: tiered administration, least-privilege delegation, privileged account management, and remediation of common AD attack paths
Support hybrid identity, including directory synchronization to cloud identity platforms and clean attribute/data flows
Automate routine directory tasks and reporting with PowerShell
Support day-to-day IT operations across the environment: escalated troubleshooting, server and SaaS administration, and infrastructure projects as needed
Participate in audits and access reviews with clear evidence from the directory
Document architecture, processes, and runbooks so the environment is well understood and supportable
• Foster open, respectful, and professional communication directly within the team as well as with co-workers/ teammates and leaders across the organization.
• Performs other duties as assigned.
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Qualifications
Required
5+ years of hands-on systems administration experience in a professional environment
Very strong Active Directory expertise: domain services, Group Policy, replication, trusts, sites and services, and directory security
Deep experience managing domain controllers, DNS, and DHCP in a production environment
Strong PowerShell skills for AD automation, reporting, and bulk operations
Solid understanding of AD security best practices: tiered admin models, delegation, privileged access, and common attack paths (e.g., Kerberoasting, pass-the-hash)
Experience with hybrid identity concepts and directory synchronization to cloud platforms
Broad generalist skills across Windows Server administration, networking fundamentals, and troubleshooting
Clear written and verbal communication and strong documentation habits
Ability to work on-site full-time in downtown Austin, TX
Preferred
Okta administration or integration experience (SSO, MFA, lifecycle management)
Microsoft 365, Entra ID, and Intune administration experience
Jamf Pro experience for macOS device management
Slack workspace administration experience
Jira Service Management (JSM) administration experience
Exposure to Workday or other HRIS platforms as an upstream identity source
Relevant certifications (e.g., Microsoft Certified: Windows Server Hybrid Administrator, Identity and Access Administrator)
Reports To
Director, IT
Location
On Site
Travel
Minimal travel between data centers may be required as needed.
Work Environment
This job operates in a professional office environment. This role routinely utilizes standard office equipment, including laptop computers and smartphones.
Physical Demands
While performing the duties of this job, the employee is frequently required to sit, stand, walk, use hands, and lift up to 50 pounds.
Position Type/ Expected Hours of Work
This is a full-time, onsite position. General hours and days of work are Monday through Friday, 8:00 a.m. to 5:00 p.m. Some nights and weekends may be required.
Supervisory Experience (Yes or No)
No