Senior Systems Administrator: Automation & Hybrid Cloud Lead

Calista Corporation; Huntsville (TN); On-site; USD 110,000 - 170,000; Full time

Job summary

StraitSys Inc is seeking a Senior Systems Administrator to lead design, administration, and security of the enterprise Windows server infrastructure and hybrid cloud services. You will mentor junior staff and drive automation, modernization, and operational excellence.

You will manage AD, Entra ID, Azure Virtual Desktop, Hyper‑V, and PowerShell automation, while ensuring high availability and secure compliant operations across multi-domain environments.

Qualifications

• Bachelor’s degree in Information Technology, Computer Science, Engineering, or equivalent experience.
• Minimum seven years of enterprise Windows infrastructure administration.
• Expert knowledge of Windows Server, Active Directory, Microsoft Entra ID, Azure Virtual Desktop, Hyper-V, and PowerShell.
• Active Top Secret Clearance
• Experience supporting hybrid cloud environments and enterprise virtualization.
• Excellent troubleshooting, communication, and documentation skills.

Responsibilities

• Administer Windows Server 2016, 2019, and 2022 environments while preparing for Windows Server 2025.
• Design, administer, and troubleshoot Active Directory in 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.

Skills

Windows Server

Active Directory

PowerShell

Hybrid cloud

Troubleshooting

Documentation

Mentoring

Education

Bachelor’s degree in IT/CS/Engineering

Tools

Docker

AKS

Azure

Hyper-V

Job description

StraitSys Inc is seeking a Senior Systems Administrator to lead design, administration, and security of the enterprise Windows server infrastructure and hybrid cloud services. You will mentor junior staff and drive automation, modernization, and operational excellence.

You will manage AD, Entra ID, Azure Virtual Desktop, Hyper‑V, and PowerShell automation, while ensuring high availability and secure compliant operations across multi-domain environments.