- CACI International (Denver, CO)
- Senior System Administrator Job Category: Information...your work life. More About This Role: As the Systems Administrator on this contract, you will ... Outside Continental US Anticipated Posting End: 9/19/2025 CACI is seeking ** Systems Administrators** with Linux Infrastructure experience to manage and maintain… more
- SciTec (Boulder, CO)
- …will not be considered. SciTec has an immediate opportunity for a talented Senior Principal Windows System Administrator to join our team in Boulder, ... clear focus on supporting customer needs. Responsibilities + Provide Windows systems administration in multiple heterogeneous Microsoft Windows and Red Hat… more
- GovCIO (Denver, CO)
- **Overview** GovCIO is hiring a Windows and Linux System Administrator ( Senior ) to support Veterans Affairs operational needs. The role requires AWS, Windows, ... /Yr. Submit a referral to this job (https://careers-govcio.icims.com/jobs/6366/linux-system- administrator %2c- senior -%28remote%29/job?mode=apply&apply=yes&in\_iframe=1&hashed=-1834385473) **Location** _US-Remote_ **ID** _2025-6366_… more
- RTX Corporation (Aurora, CO)
- …be supporting a Raytheon program in a classified environment as a Senior Principal Linux System Administrator . + Responsibilities include building, maintaining, ... of systems , storage, and networking in virtualized environments using VMware vCenter + Experience managing network devices + Experience administering Windows… more
- SciTec (Aurora, CO)
- …+ Familiarity with application layer network and firewall configuration in Linux and VMware systems + Hands on experience with TACACS, Radius, authentication ... will not be considered. SciTec has an immediate opportunity for a talented Senior Network Engineer to join our team in Aurora, CO. Successful applicants will… more
- DCCA (Broomfield, CO)
- …well as the end customer. * Maintains smooth operation of multi-user computer systems , including coordination with systems and network administrators. * Support ... of computing resources. * Ancillary duties may include setting up administrator and service accounts, maintaining system documentation, tuning system performance,… more