Job Title: Senior Systems Administrator
Job Location: New York, NY (100% Onsite, no remote)
Interview Mode: 1st round remotely, 2nd round onsite
Position Overview
Our Fortune 500 customer is seeking an experienced Senior Systems Administrator to support and maintain mission-critical IT infrastructure in a highly regulated environment. This role requires deep hands-on expertise across Windows systems, Active Directory, virtualization, storage, networking, security, and automation, combined with a strong customer service mindset and a commitment to safety and operational excellence.
The ideal candidate is detail-oriented, dependable, and capable of supporting complex infrastructure systems both during normal business hours and through off-hours, on-call support. This is a fully onsite role and requires flexibility to respond to emergencies and scheduled maintenance activities.
Key Responsibilities
Infrastructure & Systems Administration
- Administer and support Windows Server and Desktop environments, including user administration, file systems, software, and core services.
- Manage Active Directory, including domain services, Group Policy design, backup, and recovery.
- Support servers, storage systems, and RAID configurations, ensuring availability and performance.
- Perform patching and firmware management, including darksite patching of Nutanix Hypervisor and related components.
Virtualization, Monitoring & Reliability
- Maintain and support virtualized environments and enterprise computing platforms.
- Monitor system health and performance, analyze metrics, identify bottlenecks, and recommend optimization actions.
- Support disaster recovery planning, including backup, restore, and recovery testing for systems, applications, and data.
Networking & Security
- Troubleshoot and support network fundamentals (DHCP, DNS, routing, firewall concepts).
- Apply security principles, including ACLs, encryption, and access control.
- Support physical and logical security platforms; experience with Prowatch or Genetec is a plus.
Automation & Scripting
- Develop and maintain automation scripts using PowerShell, Bash, ksh, or Perl to improve efficiency and reduce manual effort.
Support, Documentation & Operations
- Provide tier-2 / tier-3 end-user support with a strong customer service focus.
- Produce clear and accurate technical documentation, including system designs, procedures, and operational guides.
- Participate in on-call rotations, off-hours support, and scheduled maintenance windows.
- Safely lift, transport, and install server and infrastructure equipment when required.
Required Qualifications
- Bachelor’s degree (preferably in Information Technology) or equivalent experience.
- 8+ years of experience in Systems Administration or IT Infrastructure Support.
- Strong hands-on experience with Windows Server/Desktop, Active Directory, and enterprise infrastructure.
- Experience supporting Nutanix Hypervisor, including darksite patching.
- Experience with scripting and automation (PowerShell, Bash, ksh, or Perl).
- Strong understanding of networking and security fundamentals.
- Excellent communication, documentation, and customer service skills.
- Ability to work fully onsite, travel to company locations, and support off-hours work.
- Ability to lift and transport server equipment.
- Valid driver’s license required.
Preferred Qualifications
- Experience with security platforms such as Prowatch or Genetec.
- Experience working in regulated or critical infrastructure environments.
- Familiarity with performance monitoring and optimization tools.
