Systems Administrator Kirkhill Inc. - 3.6 Brea, CA Job Details Full-time $95,000 - $125,000 a year 16 hours ago Benefits Health insurance 401(k) Qualifications AI models Authentication Cloud identity and access management (IAM) Azure IaaS Implementing cloud migration projects System design AI platforms (beyond public GPTs) Infrastructure architecture design Network configuration for security systems VLAN Azure AD Routing protocols WAN UEM Network routing Access control management Network infrastructure management CompTIA Security+ Azure Virtual Network (Vnet) Virtual Private Clouds Generative AI Intune Full Job Description Systems Administrator - Cloud & Network Infrastructure Position Summary We are seeking a Systems Administrator with strong Azure and networking expertise . Key Responsibilities Cloud Infrastructure Own and mature our Azure cloud environment: architecture, storage, identity (Entra ID), governance, cost management, and security posture Lead cloud migration and hybrid-cloud integration efforts for on-prem workloads where appropriate Implement and enforce cloud security configuration, CA policy, Defender security tooling, monitoring and logging Intune configurations, package deployment, and endpoint management Maintain monitoring, backup/DR, and patch/configuration management practices for cloud-hosted systems Use AI, copilot, and PowerShell to automate repetitive administration and security tasks Network Architecture Design, document, and continuously improve network architecture, including segmentation between CUI-scoped enclaves and general business networks Manage firewall, VLAN, and ACL configurations (including CUI subnet access control lists) and maintain accurate network documentation/diagrams Lead network hardening initiatives and access control requirements (e.g., AC, SC control families) Evaluate and implement zero-trust and micro-segmentation strategies Classified Environment (training provided) Maintain secure configurations, audits, and documentation for the classified workstations; Maintain active Security+ certification Maintain System Security Plans (SSPs), POA&Ms, and supporting documentation Support periodic government inspections, self-inspections, vulnerability scans, and audit log reviews for the classified system Serve as day-to-day POC for the classified environment, coordinating with the Facility Security Officer (FSO) and compliance team as needed General Systems Administration Administer Windows Server, Active Directory/Entra ID, endpoint management, and core virtual infrastructure services Participate in security assessments, incident response testing, risk assessments, and 3rd party audits Execute vulnerability scans, system patching, configuration deployments Support configuration and software management controls (e.g., application allow-listing, nonessential functionality restrictions) in coordination with compliance staff Participate in change management processes for IT systems affecting CUI/classified scope Prioritize and resolve escalated technical issues and mentor junior IT staff, manage ticketing systems, and address chronic or persistent issues Own and support all critical security incidents, interruptions/outages, and end-user issues with flexible evening/weekend work when required Maintain system documentation, diagrams, project plans, asset inventory Required Qualifications Hands-on expertise in hybrid cloud migration, Microsoft Azure networking, cloud technologies, protocols, and authentication, and WAN network architecture Experience administering

Azure:

identity (Entra ID), virtual machines, vnet, CA policy, Azure Foundry, Purview, Defender, Intune, etc. Design and manage basic network architecture: routing, switching, segmentation, firewall/ACL configuration, VLANs, RADIUS, etc. Excellent writing skills, conceptual thinking skills, and communication skills needed to learn/implement GenAI tools Active Secret security clearance U.S. citizenship required. CompTIA Security+ (CE) Preferred Qualifications Cloud or Microsoft Azure Certifications Experience with cybersecurity compliance frameworks similar to

CMMC/NIST 800-171

Implementing simple AI solutions in Azure Foundry and/or Copilot Strong PowerShell skills Work Environment On-site role Some after-hours/on-call availability required to support maintenance windows and incident response