Tier 3 MSP Systems Engineer

myCREcloud is seeking an experienced Tier 3 MSP Systems Engineer to handle complex technical escalations, infrastructure projects, and advanced troubleshooting across multiple client environments.

You’ll be the senior technical resource other engineers turn to when standard troubleshooting isn’t enough. We’re looking for someone who can independently diagnose complex issues, implement lasting solutions, and help improve the reliability and performance of our clients’ systems.

This is a full-time, in-office position in San Diego, California. What You’ll Be Doing

• Serve as the Tier 3 escalation point for complex infrastructure, networking, cloud, and Microsoft 365 issues.
• Diagnose recurring problems, perform root cause analysis, and implement long-term solutions.
• Administer and troubleshoot Microsoft 365, Entra ID, Exchange Online, SharePoint, Intune, and Azure environments.
• Manage Windows Server, Active Directory, Group Policy, Remote Desktop Services, and virtualization platforms.
• Troubleshoot complex networking issues involving firewalls, switches, routing, VLANs, VPNs, and SD-WAN.
• Lead infrastructure upgrades, Microsoft 365 migrations, and cloud projects.
• Implement and maintain security controls, including Conditional Access, MFA, and endpoint protection.
• Support backup, disaster recovery, and business continuity solutions.
• Mentor junior engineers, maintain technical documentation, and contribute to operational improvements.
• Communicate technical issues and solutions clearly to clients and internal teams.

• 5+ years of progressive IT experience, including at least 3 years working for an MSP.
• Proven experience handling Tier 3 escalations across multiple client environments.
• Advanced knowledge of Microsoft 365, Entra ID, Active Directory, Windows Server, and Azure/hybrid infrastructure.
• Strong experience with virtualization technologies, including VMware, Hyper-V, or Proxmox.
• Solid networking expertise, including TCP/IP, DNS, DHCP, VLANs, VPNs, SD-WAN, routing, switching, and firewalls.
• Experience with Remote Desktop Services, backup, and disaster recovery solutions.
• Familiarity with MSP tools, including RMM, PSA/ticketing, and documentation platforms.
• Strong independent troubleshooting, problem-solving, and client communication skills.