L3 Systems Engineer

SUMMARY We are looking for an experienced Level 3 Systems Engineer who can solve complex technical problems, design and implement solutions, lead projects, mentor other technicians, and serve as a senior technical escalation resource. This position combines advanced Tier 3 technical support with systems engineering, cloud infrastructure, networking, cybersecurity, and project responsibilities. When Tier 1 and Tier 2 technicians encounter difficult server, Microsoft cloud, networking, cybersecurity, or infrastructure problems, you are one of the people they escalate to. You will also design, implement, migrate, secure, and improve client technology environments. You should be comfortable independently investigating complex technical problems, developing a plan, implementing a solution, and communicating with the client throughout the process. Candidates whose experience is primarily desktop support, helpdesk, or Microsoft 365 administration without meaningful hands-on Windows Server experience will not meet the technical requirements of this position. JOB RESPONSIBILITIES Windows Server and Active Directory Strong hands-on Microsoft Windows Server experience is required. You should be comfortable administering, engineering, and troubleshooting: Windows Server 2016, 2019, 2022, and newer environments Active Directory Domain Services, Domain Controllers, and Active Directory replication Group Policy DNS and DHCP Authentication and domain trust issues File servers, NTFS permissions, and shared folders Windows services, Event Viewer, storage, networking, and performance Hyper-V and VMware environments Windows Server migrations, upgrades, replacements, and decommissioning Hybrid Active Directory and Microsoft cloud environments You must be able to walk into an unfamiliar Windows Server environment, determine how it is configured, identify problems, and independently develop a solution. Microsoft 365, Azure, and Cloud Engineering Modern client environments increasingly combine traditional infrastructure with cloud-hosted services. You must be comfortable supporting both, including traditional Active Directory, hybrid Active Directory and Entra ID, and cloud-only environments. You will: Administer and troubleshoot Microsoft 365 environments, including Exchange Online, SharePoint Online, Microsoft Teams, and Microsoft Intune Administer Microsoft Entra ID, including identity, roles, authentication, MFA, and Conditional Access Support and troubleshoot Microsoft Azure and cloud-hosted infrastructure, including virtual machines, storage, networking, identity, connectivity, servers, applications, and services Lead or assist with client transitions and migrations to Microsoft 365, Azure, Exchange Online, SharePoint, Entra ID, SaaS, and hybrid-cloud architectures Apply modern identity-security and Zero Trust principles to cloud environments Networking and Cybersecurity Making something work is only part of the job. It also needs to be secure. You will:…