Overview
Systems Administrator Jobs in New York, NY at Calance
Title: Systems Administrator
Company: Calance
Location: New York, NY
***Candidates MUST BE either U.S. citizen or Green Card holder***
Our client is looking for a Systems Administrator to support and secure a large-scale Windows server environment across on-premises and hybrid infrastructure platforms. The ideal candidate will possess expert-level experience with VMware, Windows Server administration, Active Directory, and server patching/vulnerability management.
This role will focus heavily on operational stability, server lifecycle management, security remediation, patch governance, and enterprise infrastructure support. Experience with HPE Synergy is considered a strong plus but is not required.
The successful candidate should be comfortable operating in enterprise environments with formal change management, security standards, and high availability requirements.
Key Responsibilities:
· Design, implement, administer, and support enterprise Windows Server environments across physical and virtual infrastructure
· Manage and maintain VMware virtualized infrastructure, including provisioning, performance optimization, troubleshooting, and lifecycle operations
· Administer Windows Server operating systems (2019–2025), including:
o Active Directory
o Group Policy
o DNS
o DHCP
o File and print services
· Support and maintain HPE Synergy composable infrastructure and HPE OneView management tools (nice to have)
· Plan, coordinate, and execute enterprise server patching cycles across production environments
· Perform vulnerability remediation activities, including:
o Reviewing vulnerability scanner findings
o Coordinating remediation efforts
o Tracking compliance and closure
· Utilize enterprise patching and vulnerability management platforms such as Ivanti or comparable tools
· Collaborate with security, networking, and application teams to align patching and remediation activities with operational requirements
· Develop and maintain PowerShell scripts and automation processes to improve operational efficiency
· Monitor server performance, availability, capacity, and operational health
· Support backup, recovery, and business continuity processes for server infrastructure
· Maintain technical documentation, operational procedures, and audit-related records
· Participate in on-call support rotation and provide Tier 2/Tier 3 infrastructure support
Required Skills & Experience:
· Expert-level experience administering Windows Server environments (2019–2025)
· Expert knowledge of:
o Active Directory
o Group Policy
o Windows server hardening
o Enterprise infrastructure operations
· Expert-level VMware administration experience
· Strong hands-on experience with enterprise server patching and vulnerability management
· Experience using patch management platforms such as:
o Ivanti
o SCCM/MECM
o WSUS
o Comparable enterprise tools
· Proven experience coordinating and executing patching cycles in production environments
· Strong understanding of vulnerability remediation workflows and security best practices
· PowerShell scripting experience for automation and operational support
· Excellent troubleshooting, communication, and documentation skills
· Ability to work effectively across infrastructure, security, and application support teams
Preferred Qualifications:
· Experience with HPE Synergy and HPE OneView
· Experience working within hybrid cloud environments
· Familiarity with enterprise change management and ITIL processes
· Exposure to vulnerability scanning and compliance reporting tools
· Relevant certifications such as:
o VMware VCP
o Microsoft Certifications
o Security+
o Other infrastructure/security certifications
Technical Environment:
· VMware vSphere / ESXi
· Windows Server 2019–2025
· Active Directory & Group Policy
· HPE Synergy & HPE OneView
· Ivanti Patch & Vulnerability Management
· SCCM / MECM / WSUS
· PowerShell
· Hybrid Infrastructure Environments
