Senior Systems Administrator

Quoris, LLC; United States; Remote; USD 110,000 - 150,000; Full time

Job summary

Quoris, LLC is seeking a Senior Systems Administrator to lead and optimize our enterprise IT infrastructure across Windows, Linux, cloud, and network environments. This role serves as the senior technical escalation point, driving stability, security, and performance in healthcare IT projects.

The role requires 5+ years of experience, strong troubleshooting, and the ability to manage multi-platform systems, virtualization, and IAM, while collaborating with stakeholders and documenting procedures.

Qualifications

• 5+ years of enterprise systems administration experience in a complex IT environment.
• Strong expertise in Windows Server administration including Active Directory, Group Policy, DNS, and DHCP.
• Experience administering virtualization platforms including VMware vSphere or Microsoft Hyper-V.
• Hands-on experience with Microsoft Azure or AWS cloud platforms.
• Solid understanding of networking concepts including TCP/IP, VLANs, firewalls, and VPNs.
• Experience with backup and disaster recovery solutions and testing.
• Strong troubleshooting and problem-solving skills across infrastructure layers.
• Excellent communication skills with both technical and non-technical stakeholders.
• Ability to work independently and manage multiple priorities in a fast-paced environment.

Responsibilities

• Administer, maintain, and optimize Windows and Linux server environments including Active Directory, Group Policy, DNS, DHCP, and file services.
• Manage virtualization infrastructure including VMware or Hyper-V environments.
• Administer and maintain cloud platforms including Microsoft Azure or AWS.
• Manage network infrastructure including switches, firewalls, VPNs, and wireless systems.
• Monitor system performance, capacity, and availability; proactively identify and resolve issues before they impact operations.
• Manage backup, disaster recovery, and business continuity processes and testing.
• Administer endpoint management tools including patch management, software deployment, and device configuration.
• Support and maintain identity and access management systems including Active Directory and Azure AD.
• Implement and maintain security controls, hardening standards, and compliance requirements.
• Lead and contribute to infrastructure projects including upgrades, migrations, and new deployments.
• Document systems configurations, procedures, and runbooks.
• Provide senior-level technical escalation support for helpdesk and IT operations teams.

Skills

Windows Server

Active Directory

Networking

VMware vSphere

Hyper-V

Azure

AWS

Backup & DR

Scripting (PowerShell)

Troubleshooting

Communication

Independent work

Tools

VMware vSphere

Hyper-V

Azure

AWS

SCCM

Intune

Jamf

ServiceNow

PowerShell

Bash

Python

Job description

• Work Authorization: Must be eligible to work in the U.S. without company sponsorship
• No Third Parties Please

Scope

Quoris is seeking a Senior Systems Administrator to manage and maintain our enterprise IT infrastructure. This role will serve as the primary technical resource responsible for ensuring the stability, security, and performance of server, network, cloud, and endpoint environments across the organization.

Position Summary

The Senior Systems Administrator will be responsible for administering and optimizing a complex, multi-platform IT environment including Windows and Linux servers, cloud infrastructure, virtualization, networking, storage, and security systems. This individual will lead infrastructure projects, support day-to-day IT operations, and serve as a senior technical escalation point for systems-related issues. The ideal candidate brings 5+ years of enterprise systems administration experience, strong troubleshooting skills, and a proactive approach to infrastructure management in a healthcare IT environment.

Key Responsibilities

• Administer, maintain, and optimize Windows and Linux server environments including Active Directory, Group Policy, DNS, DHCP, and file services.
• Manage virtualization infrastructure including VMware or Hyper-V environments.
• Administer and maintain cloud platforms including Microsoft Azure or AWS.
• Manage network infrastructure including switches, firewalls, VPNs, and wireless systems.
• Monitor system performance, capacity, and availability; proactively identify and resolve issues before they impact operations.
• Manage backup, disaster recovery, and business continuity processes and testing.
• Administer endpoint management tools including patch management, software deployment, and device configuration.
• Support and maintain identity and access management systems including Active Directory and Azure AD.
• Implement and maintain security controls, hardening standards, and compliance requirements.
• Lead and contribute to infrastructure projects including upgrades, migrations, and new deployments.
• Document systems configurations, procedures, and runbooks.
• Provide senior-level technical escalation support for helpdesk and IT operations teams.

Qualifications

• 5+ years of enterprise systems administration experience in a complex IT environment.
• Strong expertise in Windows Server administration including Active Directory, Group Policy, DNS, and DHCP.
• Experience administering virtualization platforms including VMware vSphere or Microsoft Hyper-V.
• Hands-on experience with Microsoft Azure or AWS cloud platforms.
• Solid understanding of networking concepts including TCP/IP, VLANs, firewalls, and VPNs.
• Experience with backup and disaster recovery solutions and testing.
• Strong troubleshooting and problem-solving skills across infrastructure layers.
• Excellent communication skills with both technical and non-technical stakeholders.
• Ability to work independently and manage multiple priorities in a fast-paced environment.

Preferred Qualifications

• Experience in a healthcare IT environment; familiarity with HIPAA security requirements.
• Microsoft certifications such as MCSA, MCSE, or Azure Administrator Associate.
• VMware certification (VCP) or equivalent.
• Experience with endpoint management platforms such as SCCM, Intune, or Jamf.
• Experience with ITSM tools such as ServiceNow or similar ticketing platforms.
• Scripting experience with PowerShell, Bash, or Python for automation.

Ideal Candidate Profile

• Senior infrastructure professional who can independently manage a complex, multi-platform environment without needing hand-holding.
• Proactive problem solver who identifies and resolves issues before they become outages.
• Strong communicator who can translate technical concepts clearly for non-technical stakeholders and leadership.
• Detail-oriented and organized with a track record of clean documentation and reliable infrastructure management.
• Brings technical depth, accountability, and a service-oriented mindset to a fast-moving healthcare IT consulting firm.

About Quoris

Quoris is a global healthcare IT consulting and workforce solutions firm with 25+ years of experience helping healthcare organizations worldwide deploy, optimize, and modernize their EHR and related technology solutions. When you join Quoris, you join a team of experts who are passionate about making a meaningful impact in healthcare — backed by a collaborative culture, competitive compensation, and comprehensive benefits including Health, Dental, Vision, and 401k.