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# IT Systems Administrator Senior - IT

- **Company:** York Inc
- **Location:** Greenwood Village, CO, United States
- **Experience:** Expert
- **Salary:** $105,000.0 - $115,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Backup Devices, Cloud Computing, Software Documentation, Dynamic Host Configuration Protocol, Disaster Recovery, File Systems, Domain Name System (DNS), Hyper-V, Linux System Administration, Linux Servers, Windows Servers, Networking Basics, Routing, Performance Tuning, TCP/IP, Virtualization Technology, VMware VSphere, Software Vulnerability Management, Cloud Platform System, System Availability, Firewalls (Computer Science), Information Technology, Server Operating Systems & Platforms, Vmware
- **Published:** July 23, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=610a48d098904e6a

## About the Role

* 5-7 + years of experience administering enterprise-level server environments.
 * Strong proficiency with Windows Server and Linux environments.
 * Expertise with virtualization platforms such as VMware vSphere or Hyper-V.
 * Hands-on experience with Active Directory, DNS, DHCP, file systems, and Group Policy.
 * Solid understanding of networking fundamentals (TCP/IP, routing, firewalls).
 * Experience with backups and disaster recovery technologies.
 * Ability to manage complex technical projects with minimal supervision.
 * Excellent analytical, documentation, and communication skills.
 * Self-starter.
 * 100% in office requirement.

## Description

We are seeking a Senior Systems Administrator responsible for the design, implementation, maintenance, and optimization of the organization's server infrastructure. This role ensures high availability, reliable performance, and strong security across on-premises and cloud-based systems. The Senior System Administrator also provides technical leadership, mentors junior team members, and collaborates closely with cross-functional teams to deliver stable, scalable, and secure IT services., * Architect, deploy, and maintain Windows and Linux server environments, including physical, virtual, and cloud-based platforms.

 * Manage Active Directory, DNS, DHCP, Group Policy, and identity-related services.
 * Administer virtualization platforms (VMware, Hyper-V, or equivalent), ensuring performance, capacity planning, and resource optimization.
 * Oversee patching strategies, OS upgrades, and lifecycle management for server systems.
 * Monitor server performance, logs, and alerts; troubleshoot and resolve complex systems issues.
 * Implement and enforce security best practices, including hardening, access controls, vulnerability remediation, and compliance with organizational standards.
 * Support backup, recovery, and disaster recovery planning, including routine testing and documentation.
 * Collaborate on infrastructure roadmaps and recommend improvements for performance, reliability, security, and scalability.
 * Maintain detailed system documentation, diagrams, and operation procedures.
 * Provide tier-3 support for escalated incidents and mentor junior administrators.
 * Participate in on-call rotation as required.


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