> Markdown version of [/jobs/ext/4240400-tier-2-systems-administrator](https://www.wearedevelopers.com/jobs/ext/4240400-tier-2-systems-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Tier 2 Systems Administrator

- **Company:** QUANTUM SKY LLC
- **Location:** Denver, CO, United States
- **Salary:** $120,000 - $130,000
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Software Applications, Unix, CentOS, Cloud Computing, Cyber Security, Linux, Device Drivers, Domain Name System (DNS), Infrastructure as a Service (IaaS), Lightweight Directory Access Protocols (LDAP), Red Hat Enterprise Linux, VMware Virtualization, VMware VSphere, JavaScript Pagination Plugin, Software Troubleshooting, Vcenter, Operational Systems, Vmware
- **Published:** October 26, 2026
- **Apply:** https://www.denverjobsite.com/job.asp?id=3470784203&tx=JL4943FFF&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

Required:

 * Experience with VMware virtualization and cloud computing technology and its associated products (vSphere, vCenter, VRa, vROP, etc.)
 * Experience in Linux or UNIX systems administration
 * Experience configuring domain information utilities: Active Directory, Centrify, LDAP, and DNS
 * Background in troubleshooting and debugging applications, and performing software application maintenance on a variety of operating systems (Windows, RHEL, CentOS, etc.)
 * Understanding of operating system concepts such as swapping and paging, inter-process communications, and devices and device drivers
 * Ability to frequently interact directly with the customer and work effectively in a real-time operational environment
 * Strong communication skills to effectively and accurately exchange technical information
 * Ability to work under pressure to restore high-priority systems to full operations
 * Proactive in addressing technical issues, reconciling tickets, and providing technical support to customers
 * Availability to work after hours on a call-in basis

Clearance:

 * Active and in-scope United States TS/SSCI with CI polygraph security clearance
 * Qualified applicants may be subject to a security investigation and must meet minimum qualifications for access to classified information
 * Must have a current DODI 8570.1-M IAT Level II certification (i.e., Security+ CE)

## Description

* The candidate will provide IaaS Windows/UNIX/Linux/VMware system administration, maintenance, and engineering support.
 * The technician will maintain, troubleshoot, and repair high-priority, mission-critical operational systems to ensure a high level of availability for the customer.
 * This full-time position operates on an 8x5 schedule with periodic after-hours call-in responsibility as needed.