Senior Systems & Infrastructure Engineer

GEM Technologies•New York, NY

2d•$90,000 - $120,000•Hybrid

About The Position

GEM Technologies is hiring a hands-on senior infrastructure engineer to resolve complex technical problems across multiple client environments. This is an individual-contributor role rather than a management or traditional help desk position. The engineer will take ownership of infrastructure incidents, escalations, migrations, and projects from investigation through resolution, working across varied technologies and business requirements. The role covers Windows Server and Microsoft infrastructure, identity and access, virtualization, networking, security, backup and disaster recovery, and infrastructure modernization. The engineer will work directly with clients, vendors, and GEM colleagues, communicate technical issues to both technical and nontechnical audiences, document work, and use scripting, automation, and AI responsibly where appropriate. Much of the work can be performed remotely, with occasional onsite support required at client locations in the New York City metropolitan area. GEM Technologies is a managed IT and cybersecurity services company with a small, experienced team. The company values technical curiosity, continued learning, knowledge sharing, clear documentation, accountability, and meaningful ownership of client systems and outcomes. Candidates must be legally authorized to work in the United States; employment visa sponsorship is not available. The anticipated salary range is $90,000–$120,000, depending on experience and demonstrated capabilities.

Requirements

Substantial hands-on experience supporting production IT infrastructure and personally resolving complex technical problems.
Strong experience with Windows Server and Active Directory.
Strong experience with Group Policy, DNS, and DHCP.
Strong experience with Microsoft 365 and Entra ID, including identity, MFA, and Conditional Access.
Experience with VMware vSphere/ESXi and/or Microsoft Hyper-V.
Experience with server and storage infrastructure, backup, and disaster recovery.
Experience with firewalls, VPNs, VLANs, routing, switching, and network and infrastructure troubleshooting.
Experience with system hardening, EDR, MFA, and related security technologies.
Ability to communicate directly with clients and explain complex technical issues to technical and nontechnical audiences.
Ability to work independently across multiple systems and take ownership of issues through resolution.
Willingness and ability to provide onsite support at client locations in the New York City metropolitan area when required.
Legal authorization to work in the United States.

Nice To Haves

Experience working for an MSP, technology consulting firm, or another multi-client environment.
Comparable technical breadth, independence, and ownership gained in a complex internal IT environment.
Hands-on experience with Microsoft Exchange Server and hybrid Exchange environments.
Hands-on experience with Citrix Virtual Apps and Desktops (CVAD).
Hands-on experience with Citrix NetScaler / ADC.
Advanced VMware infrastructure experience.
Advanced networking and firewall troubleshooting experience.
Experience with Veeam or similar backup and disaster recovery platforms.
PowerShell scripting and automation experience.
Experience with infrastructure migrations and major upgrades.

Responsibilities

Own the investigation and resolution of complex infrastructure incidents and escalations.
Administer and troubleshoot Windows Server, Active Directory, Group Policy, DNS, and DHCP.
Support Microsoft 365 and Entra ID, including identity, authentication, MFA, and Conditional Access.
Troubleshoot and support VMware and/or Hyper-V virtualization environments.
Diagnose networking issues involving firewalls, VPNs, VLANs, routing, switching, and connectivity.
Support backup, disaster recovery, and business continuity systems.
Plan and execute infrastructure migrations, upgrades, and modernization projects.
Perform root-cause analysis and implement or recommend changes to prevent recurring problems.
Use PowerShell, scripting, automation, and other tools to improve reliability and efficiency.
Create and maintain clear technical documentation.
Work directly with clients, vendors, and other GEM engineers during projects and technical incidents.
Provide occasional onsite support at client locations in the New York City metropolitan area.