Senior Systems Administrator

Yulista Solutions•Huntsville, AL

3h•Onsite

About The Position

The Senior Systems Administrator is responsible for the design, administration, security, automation, and operational support of the organization's enterprise Windows server infrastructure, Active Directory, virtualization platforms, and hybrid cloud services. This position serves as the senior technical resource for Microsoft server technologies and provides technical leadership for infrastructure modernization, automation, and operational excellence. This position will be onsite in Huntsville, Alabama.

Requirements

7+ years administering Windows Server in enterprise environments, including multi-domain or multi-forest Active Directory, GPO and DNS
3+ years operating production workloads in Azure: VMs, VNets, NSGs, Azure Monitor, backup and Site Recovery
Hands-on Hyper-V (VMware a plus), including backup validation and VM migration
Administering RDS and/or Azure Virtual Desktop in production
Strong PowerShell: writes reusable, documented scripts and uses source control
Works in a ticket queue and CAB-style change control, and writes clear runbooks
Active Top Secret Clearance
Experience supporting hybrid cloud environments and enterprise virtualization.
Excellent troubleshooting, communication, and documentation skills.

Nice To Haves

Microsoft AZ-104 (Azure Administrator); AZ-800/801 (Windows Server Hybrid) or AZ-305 is a plus
Identity management experience: Entra ID, HR-to-AD provisioning, SAML/SSO
Infrastructure as code (Bicep, Terraform) or configuration automation
Experience with multi-tenant or merger/divestiture environments
Experience mentoring junior administrators

Responsibilities

Administer Windows Server 2016, 2019, and 2022 environments while preparing for Windows Server 2025.
Design, administer, and troubleshoot Active Directory in complex multi-domain and multi-forest environments.
Manage DNS, DHCP, IPAM, DFS, File Services, Print Services, and Active Directory Certificate Services.
Administer Microsoft Entra ID hybrid identity, Azure AD Connect, Conditional Access, MFA, and PIM.
Manage Azure Virtual Desktop (AVD), Remote Desktop Services (RDS), Windows 11 Multi-Session, FSLogix, host pools, and image management.
Develop PowerShell automation, Azure Automation runbooks, and repeatable operational workflows.
Administer Hyper-V, Azure IaaS, Azure Backup, Azure Site Recovery, and hybrid networking.
Implement enterprise security controls including Defender, LAPS, BitLocker, Credential Guard, Sentinel, and security baselines.
Perform advanced troubleshooting using Sysinternals, Event Viewer, PerfMon, ETW tracing, and packet analysis.
Develop documentation, standards, and operational procedures.
Mentor junior administrators and provide technical leadership during projects and production incidents.