Systems Engineer III - Microsoft Cloud and Infrastructure

Courser • Irvine, CA

72d • Hybrid

About The Position

We are seeking a highly skilled Systems Engineer III – Microsoft Cloud & Infrastructure to serve as a senior technical resource for Microsoft cloud services, server infrastructure, identity management, backup and disaster recovery, and escalated support. The ideal candidate brings extensive experience in Microsoft technologies and MSP environments, with the ability to resolve complex technical issues, mentor junior engineers, improve technical standards, and provide practical guidance to clients and internal teams. This role focuses primarily on systems, cloud, identity, infrastructure reliability, documentation, and operational improvement. Primary ownership of networking, WAN, wireless, firewall, VoIP, and telecom platforms is expected to sit with a separate Network & Security role.

Requirements

• 7+ years of experience in systems engineering, IT infrastructure, or MSP environments.
• Advanced experience supporting Windows Server environments.
• Strong expertise with Active Directory, DNS, DHCP, Group Policy, and file services.
• Extensive Microsoft 365 administration experience.
• Strong understanding of Entra ID, authentication, and identity management.
• Experience implementing and supporting Conditional Access and MFA.
• Experience supporting Azure-based workloads and cloud services.
• Experience with backup and disaster recovery platforms.
• Advanced troubleshooting skills with the ability to resolve complex technical issues.
• Excellent interpersonal, written, and verbal communication skills.
• Ability to mentor junior engineers and collaborate with cross-functional teams.

Nice To Haves

• Azure Virtual Desktop (AVD) and Remote Desktop Services (RDS).
• Microsoft Azure administration.
• ConnectWise PSA.
• IT Glue or similar documentation platforms.
• Datto and Axcient backup platforms.
• Huntress and SentinelOne.
• PowerShell automation.
• Microsoft certifications.
• Experience supporting infrastructure migrations and modernization efforts.
• Experience supporting SMB and mid-market environments in an MSP setting.

Responsibilities

• Serve as a senior escalation point for complex technical issues involving Microsoft 365, Windows Server, cloud services, identity platforms, and backup infrastructure.
• Perform advanced troubleshooting and root-cause analysis across servers, cloud services, authentication systems, endpoint systems, and client environments.
• Provide technical mentorship and guidance to junior engineers and support staff.
• Create customer-ready summaries, technical recommendations, and remediation plans.
• Support service reviews and escalation discussions by identifying practical next steps and long-term remediation opportunities.
• Design and recommend scalable infrastructure, cloud, and identity solutions that align with client business and technical requirements.
• Evaluate existing environments and recommend improvements to reliability, security, performance, and supportability.
• Establish and promote technical standards, best practices, and repeatable configurations across supported environments.
• Contribute to standardization initiatives that improve consistency, efficiency, and engineer effectiveness.
• Lead the administration and optimization of Windows Server environments.
• Support Active Directory, Group Policy, DNS, DHCP, DFS, file services, and identity infrastructure.
• Troubleshoot domain controllers, authentication issues, replication problems, file permissions, and server performance concerns.
• Support environment transitions and inherited infrastructure stabilization efforts.
• Maintain system reliability, performance, and operational readiness.
• Administer and support Microsoft 365 environments, including: Exchange Online, SharePoint Online, Microsoft Teams, OneDrive, Entra ID.
• Manage user lifecycle processes including onboarding, offboarding, licensing, and access management.
• Troubleshoot email delivery, authentication, collaboration, permissions, and synchronization issues.
• Support Azure Virtual Desktop (AVD) and Remote Desktop Services (RDS) environments.
• Support Microsoft 365 tenant migrations, onboarding activities, cloud adoption, and platform modernization efforts.
• Implement and support: Multi-Factor Authentication (MFA), Conditional Access policies, Identity governance controls, Access management controls.
• Assist with security investigations, remediation activities, and policy-related troubleshooting.
• Support endpoint security tools including Huntress, SentinelOne, and related platforms.
• Promote security best practices and help organizations improve their security posture.
• Participate in security reviews and compliance-related initiatives.
• Administer and support backup and business continuity platforms, including Datto, Axcient, and comparable solutions.
• Monitor backup success and remediation requirements.
• Validate restores and recovery procedures.
• Assist with disaster recovery planning and testing exercises.
• Support backup platform transitions and recovery readiness initiatives.
• Develop and maintain documentation for system configurations, procedures, and technical standards.
• Maintain accurate client documentation within approved documentation platforms.
• Ensure consistency, quality, and repeatability across supported environments.
• Identify recurring support issues and recommend documentation, automation, or process improvements to reduce ticket volume.
• Proactively monitor system performance and identify opportunities for improvement.
• Assist with capacity planning and future growth strategies.
• Monitor platform health trends and recommend improvements to increase stability and efficiency.
• Stay current with emerging Microsoft technologies, security trends, and industry best practices.
• Recommend new technologies and processes that improve service delivery and operational maturity.
• Work closely with business leaders, account managers, service delivery leaders, and stakeholders to align technical solutions with organizational objectives.
• Build trusted relationships with clients through professional communication and technical leadership.
• Present technical findings and recommendations in business-friendly terms.
• Coordinate with customers, vendors, and internal teams to drive technical issues to resolution.
• Occasionally travel to customer locations for onsite support, assessments, onboarding activities, and issue resolution.

Benefits

• Competitive benefits package, including medical, dental, vision, and life insurance
• 401(k) company match
• Flexible vacation time
• Paid sick time
• 10 Holidays including your Birthday and a Floating Holiday!
• Healthy Lifestyle reimbursement
• Membership Subsidy
• 40 Hours for Volunteer Time
• Paid parental leave
• Reimbursement for ongoing certifications

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed