Senior Windows Administrator VMWare Active Directory

Donnelly & Moore Corporation; New York (NY); Hybrid; USD 110,000 - 150,000; Full time

Job summary

Donnelly & Moore Corporation seeks a skilled Windows System Administrator contractor for a 12+ month hybrid role in the Bronx, NY. The ideal candidate will have 5-7 years’ experience managing Windows environments, strong SQL Server skills, and proficiency in AD, VMware, and PowerShell.

Responsibilities include AD, DNS/DHCP, patch management, SQL Server maintenance, automation scripts, and security hardening. Collaboration with IT teams and documentation are essential.

Qualifications

• 5-7 years of hands-on Windows administration experience in mid to large environments.
• Strong SQL Server installation, maintenance and scripting capabilities.
• Proficient in PowerShell for automation and admin tasks.
• Familiarity with virtualization (VMware, Hyper-V, Nutanix) and ADGPO.
• Excellent troubleshooting, communication, and teamwork skills.

Responsibilities

• Administer and optimize Windows Server environments (2016/2019/2022).
• Manage Active Directory, DNS, DHCP, and patching; monitor performance and troubleshoot.
• Configure and maintain SQL Server instances; write queries for automation.
• Implement backup/recovery and disaster recovery plans.
• Collaborate with development and application teams for performance.
• Maintain security hardening and change controls; document configs.

Skills

Active Directory

Windows Server administration

PowerShell scripting

SQL Server management

Troubleshooting

Communication

Collaboration

Customer engagement

Education

Bachelor's Degree

Tools

VMware

Hyper-V

Nutanix

Job description

Our Utility Client in the Bronx, NY is looking for a 12+month HYBRID Windows Administrator contractor to come onsite 2-3 days a week. Must be strong with AD, VMWare, Windows, SQL Server and PowerShell.

Interview Process

MS Teams and then 2nd round FTF interview. MUST BE LOCAL CANDIDATE

Technical Skills

Must Have

• Active Directory
• maintenance of VMware and Windows systems
• Windows Server management

About the Role

We are seeking a skilled and experienced Windows System Administrator to join our contract IT team. The ideal candidate will have 5-7 years of hands‑on experience managing Windows environments and a strong understanding of SQL databases. The selected candidate will be responsible for maintaining, securing, and optimizing our Windows-based infrastructure and supporting SQL systems that are critical to business operations.

Key Responsibilities

• Administer, maintain, and optimize Windows Server environments (2016/2019/2022).
• Manage Active Directory, Group Policy, DNS, DHCP, and Windows patching. Monitor system performance and troubleshoot hardware, software, and network issues. Implement, support and maintain backup/recovery solutions and disaster recovery plans. Install, configure, and maintain SQL Server environments. Write and optimize SQL queries and scripts for system automation and reporting.
• Collaborate with development and application teams to ensure system compatibility and performance.
• Collaborate with customers, adjacent technical teams and all level of management to address systems issues.
• Maintain security best practices, including system hardening and vulnerability management.
• Produce documentation for system configurations, procedures, and change controls.

Qualifications

• 5-7 years of experience in Windows system administration in mid to large-scale environments.
• Strong experience with Microsoft SQL Server (installation, maintenance, scripting, performance tuning).
• Proficiency in PowerShell scripting for automation.
• Higher level of familiarity with virtualization technologies (VMware, Hyper‑V and Nutanix).
• Understanding of network fundamentals (TCP/IP, firewalls, VPNs).
• Knowledge of ITIL practices and change management processes is a plus.
• Excellent troubleshooting and analytical skills.
• Strong communication and collaboration abilities.
• Detail Oriented
• Customer Outcome Focused
• Customer Engagement

Preferred Certifications

• Microsoft Certified: Windows Hybrid Server Administrator
• Microsoft Certified: Administrator Associate
• CompTIA Security+ or equivalent

Preferred Education

• Bachelors Degree

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