Senior Systems & Infrastructure Engineer

GEM Technologies•New York, NY

6d•Hybrid

About The Position

GEM Technologies is looking for an experienced Senior Systems & Infrastructure Engineer who enjoys solving difficult technical problems and taking ownership of them through resolution. This is a hands-on senior infrastructure position, not a management role or traditional help desk position. You will be one of the technical resources our team and clients rely on for complex infrastructure issues, production incidents, escalations, migrations and projects across multiple client environments. We are looking for an engineer who can step into a difficult situation, troubleshoot across technologies, determine the root cause, communicate clearly with the people involved, and remain accountable until the issue is resolved. If you enjoy being the engineer brought in when standard troubleshooting has not solved the problem, this may be a good fit. You will work across multiple client environments with different technologies, configurations and business requirements.

Requirements

Substantial hands-on experience supporting production IT infrastructure and personally resolving complex technical problems.
Strong experience in Microsoft Infrastructure: Windows Server and Active Directory, Group Policy, DNS and DHCP, Microsoft 365 and Entra ID, Identity, MFA and Conditional Access.
Strong experience in Virtualization and Core Infrastructure: VMware vSphere/ESXi and/or Microsoft Hyper-V, Server and storage infrastructure, Backup and disaster recovery.
Strong experience in Networking and Security: Firewalls, VPNs, VLANs, routing and switching, Network and infrastructure troubleshooting, System hardening, EDR, MFA and related security technologies.
Comfortable communicating directly with clients and explaining complex technical issues to both technical and nontechnical audiences.
Experience working for an MSP, technology consulting firm or other multi-client environment is strongly preferred.
Candidates from complex internal IT environments who can demonstrate comparable technical breadth, independence and ownership will also be considered.
Candidates must be willing and able to provide onsite support when required.
Candidates must be legally authorized to work in the United States.
GEM Technologies is not currently able to provide employment visa sponsorship.

Nice To Haves

Meaningful hands-on experience in Microsoft Exchange Server and hybrid Exchange environments.
Meaningful hands-on experience in Citrix Virtual Apps and Desktops (CVAD).
Meaningful hands-on experience in Citrix NetScaler / ADC.
Meaningful hands-on experience in Advanced VMware infrastructure.
Meaningful hands-on experience in Advanced networking and firewall troubleshooting.
Meaningful hands-on experience in Veeam or similar backup and disaster recovery platforms.
Meaningful hands-on experience in PowerShell scripting and automation.
Meaningful hands-on experience in 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 environments, including identity, authentication, MFA and Conditional Access.
Troubleshoot and support virtualization environments using VMware and/or Hyper-V.
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 that prevent recurring problems.
Use PowerShell, scripting, automation and other tools where they can 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.