Senior Systems Administrator – Physical Security & Nutanix Infrastructure

VSG Business Solutions•New York City, NY

About The Position

The Senior Systems Administrator supports and maintains the Company's enterprise physical security and surveillance infrastructure, including Honeywell Pro-Watch access control systems, Genetec Security Center, ChangeGear SQL databases, and enterprise camera and video surveillance systems. The role also supports Windows server infrastructure and related technologies, with required expertise in Nutanix cluster management and deployment. The administrator monitors, maintains, optimizes, and troubleshoots security platforms, servers, databases, and supporting infrastructure. Responsibilities include upgrades, patching, firmware and security updates, vulnerability remediation, disaster recovery planning, technical documentation, and collaboration with cybersecurity, networking, facilities, and operations teams. The position provides on-call and emergency support for critical systems and may require travel to Company locations.

Requirements

At least 8 years of Information Technology experience supporting enterprise server environments and critical infrastructure systems.
Nutanix cluster management and deployment experience; mandatory.
Experience administering Honeywell Pro-Watch access control systems.
Experience administering and troubleshooting Genetec Security Center.
Experience with enterprise CCTV/IP camera systems, NVR/DVRs, and video management systems.
Windows Server and Active Directory administration experience.
Microsoft SQL Server administration, backup, and recovery experience.
Knowledge of IP camera systems, video encoders, enterprise video storage, card access systems, badge management, door controllers, and physical security integrations.
Knowledge of DHCP, DNS, routing, firewalls, VLANs, and IP networking.
Knowledge of security principles including ACLs, encryption, authentication and authorization, and system hardening.
Experience with server hardware, RAID storage, backup and recovery, disaster recovery planning, patch management, and firmware lifecycle administration.
System health monitoring, performance analysis, capacity planning, and optimization skills.
Strong troubleshooting and problem-solving skills.
Excellent verbal and written communication skills.
Strong customer service mindset and experience providing end-user support.
Well-organized, detail-oriented, and able to manage multiple priorities and meet deadlines.
Ability to make sound technical and business decisions.
Ability to lift and transport server, network, and security system equipment when required.
Ability to provide after-hours, on-call support for critical systems.
Willingness to work overtime and flexible hours for scheduled maintenance and emergency response.
Ability to travel to Company locations as necessary.
Valid driver's license required.
Ability to successfully pass a NERC CIP Personnel Risk Assessment Background Check.

Nice To Haves

Bachelor's degree in Information Technology, Computer Science, Engineering, or a related discipline preferred.
Experience supporting physical security systems, access control platforms, video management systems, or related operational technology environments strongly preferred.
PowerShell scripting and automation experience preferred.

Responsibilities

Administer and maintain Honeywell Pro-Watch access control servers and associated hardware.
Manage Nutanix cluster deployment and administration.
Support and manage Genetec Security Center servers, video management systems, and camera integrations.
Maintain and optimize ChangeGear SQL databases, including performance, availability, backup, and recovery.
Serve as the subject matter expert for enterprise IP camera systems, video recording platforms, storage systems, and surveillance infrastructure.
Troubleshoot and resolve access control, surveillance, server, and database incidents.
Coordinate hardware and software upgrades for physical security systems and supporting infrastructure.
Monitor system health, performance, capacity, and availability across security platforms and server environments.
Perform system patching, firmware upgrades, security updates, and vulnerability remediation.
Develop and maintain disaster recovery and business continuity procedures for physical security systems.
Create and maintain technical documentation, system diagrams, operating procedures, and support guides.
Provide on-call and emergency support for critical physical security and surveillance systems.
Collaborate with cybersecurity, networking, facilities, and operations teams to support secure and reliable system operation.
Support Windows Server and desktop operating systems, user administration, file systems, software installation, and services management.
Administer Active Directory, Group Policy, and domain services.
Manage server hardware and RAID storage configurations, backup and recovery, and patch and firmware lifecycles.
Administer and maintain Microsoft SQL Server, including backup, restore, performance monitoring, optimization, troubleshooting, and maintenance.
Monitor system health and performance, perform capacity planning, and develop automation and reporting.
Provide end-user support and travel to Company locations as necessary.