IT Systems Administrator

IT Systems Administrator

The Role

Own the reliability security and continuous improvement of Crest Operations hybrid IT environment. You will administer core infrastructure solve complex technical problems automate repetitive work and maintain the documentation and controls required for stable operations.

This role is suited to a systems expert who works independently moves quickly and expects technical decisions to be supported by logic evidence and defined standards.

What Youll Own

• Administer Windows Server Active Directory Group Policy Microsoft 365 and Microsoft Entra
• Maintain hybrid infrastructure across VMware Azure IaaS and on-premises environments
• Manage identity access conditional-access policies permissions and Okta integrations
• Configure endpoints compliance policies applications and software deployments using Intune and Workspace ONE
• Execute upgrades patching migrations backups recovery testing and system retirements
• Monitor system health investigate alerts and resolve root causes
• Use PowerShell APIs and automation to improve reliability and reduce manual work
• Maintain accurate system configurations network records procedures and compliance documentation
• Support infrastructure modernization lifecycle planning and platform optimization
• Manage tickets changes and service commitments in accordance with ITIL practices
• Identify security reliability licensing and capacity risks before they affect the business

What Success Looks Like

• Systems remain stable secure current and recoverable
• Technical issues are resolved accurately and at the root-cause level
• Changes are tested documented and implemented with minimal disruption
• Repetitive processes are standardized or automated
• Leadership receives clear evidence-based recommendations on risk cost and system improvements

Required Experience

• 37 years of systems-administration experience in a Windows enterprise environment
• Strong knowledge of Windows Server Active Directory Group Policy Microsoft 365 and Entra
• Experience with VMware or Azure-based virtual infrastructure
• Experience managing endpoints through Intune or Workspace ONE
• Working knowledge of identity security access controls backup recovery and monitoring
• PowerShell scripting or comparable automation experience
• Ability to diagnose complex issues and make sound technical decisions independently
• Strong documentation practices and attention to configuration accuracy

Preferred Experience

• Okta administration and SaaS provisioning
• API-based integrations and SaaS connectors
• Exchange Online SharePoint Online Teams Power BI and Power Automate
• Veeam PRTG SolarWinds ServiceNow or Zendesk
• Infrastructure migrations modernization or cloud-transition projects
• ITIL v4 Foundation certification
• Microsoft Azure VMware Okta Network or Security certifications

Technical Environment

Windows Server Active Directory Group Policy Microsoft 365 Entra Azure IaaS VMware vSphere Intune Workspace ONE Okta PowerShell Veeam PRTG SolarWinds

Why Join Crest Operations

You will have meaningful ownership of a diverse technical environment and the opportunity to improve how it operates. The work is hands-on technically demanding and visible. Strong performance can lead to senior systems administration cloud engineering infrastructure architecture or IT operations leadership.