Serve as a primary administrator for core security technologies including Microsoft Defender Suite, Entra ID, Conditional Access, and endpoint protection, while also administering enterprise infrastructure across Microsoft 365, Azure, AWS, VMware, and hybrid platforms. Troubleshoot complex infrastructure and security issues, manage cloud backup and disaster recovery, monitor alerts through LogicMonitor and SIEM/MDR/SOCaaS services, and coordinate with security operations teams on investigations and remediation. Requires 8+ years of hands-on experience in cybersecurity and infrastructure engineering in business-critical environments, with deep expertise in Microsoft identity and security technologies, cloud platforms, vulnerability management, and enterprise backup solutions. Participate in after-hours support and escalation activities as needed.

Hands-on IT Infrastructure and System Administrator supporting a diagnostic company's local IT environment. Responsibilities include maintaining network security and reliability, managing workstations and user lifecycle, providing helpdesk support, administering firewalls and backups, and collaborating with Headquarters IT on infrastructure projects. Requires 5+ years of IT experience, independent work capability in a one-person environment, and proficiency with Office 365, MS SQL Server, VMware, DNS, firewalls, and backup/recovery tools.