Senior Windows Administrator VMWare Active Directory

Donnelly-; New York (NY); Hybrid; USD 90,000 - 130,000; Full time

Job summary

Donnelly- is seeking a skilled Windows System Administrator for a 12+ month hybrid contract in the Bronx, NY. The role requires hands-on experience managing Windows environments, AD, VMware, and SQL Server.

You will work on-site 2-3 days per week, collaborate with IT teams, ensure security, backups, DR plans, and produce documentation. Strong PowerShell scripting and ITIL familiarity are a plus; must be local to NYC area.

Qualifications

• 5–7 years of Windows system administration in mid to large environments.
• Strong experience with Microsoft SQL Server (installation, maintenance, scripting, performance tuning).
• Proficiency in PowerShell scripting for automation.

Responsibilities

• Administer, maintain, and optimize Windows Server environments (2016/2019/2022).
• Manage Active Directory, Group Policy, DNS, DHCP, and Windows patching. Monitor performance and troubleshoot issues. Implement and maintain backup/recovery and DR plans. Install, configure, and maintain SQL Server environments; write and optimize SQL queries.
• Collaborate with development and application teams to ensure system compatibility and performance.
• Collaborate with customers, adjacent teams and management to address systems issues.
• Maintain security best practices, including system hardening and vulnerability management.
• Produce documentation for system configurations, procedures, and change controls.

Skills

Active Directory

VMware

Windows Server

Education

Bachelor's Degree

Tools

PowerShell

SQL Server

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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