PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
1mo
Save
Mark Applied
Hide
Linux Administrator II
Westminster, Colorado, United States
$33-$39/hr OnsiteFull Time
2+ YOEBachelor's degree in a technical discipline with 2+ years Linux systems administration; networking fundamentals (TCP/IP, DNS, DHCP, VLANs), cybersecurity best practices, troubleshooting, operational readiness, and strong cross-team communication.
Linux, TCP/IP, DNS, DHCP, VLANs, firewalls
2w
Save
Mark Applied
Hide
IT Linux System Administrator 2
Centennial or Cape Canaveral or Decatur or Vandenberg AFB
$82k-$136k/yr OnsiteFull Time
2+ YOEBachelor in STEM or equivalent, minimum 2 years related experience, foundational Linux administration (RHEL/Rocky/AlmaLinux/Ubuntu), ability to obtain DoD TS/SCI, US citizenship required, basic networking and troubleshooting skills.
RHEL, Rocky, AlmaLinux, Ubuntu, Bash, Python, Ansible
1mo
Save
Mark Applied
Hide
Sr Principal Linux Systems Administrator - Secret
Boulder, Colorado, United States
$129k-$194k/yr OnsiteFull Time
6+ YOEMust hold U.S. Secret clearance, meet 8140 IAT Level II (e.g., Security+) requirements, have extensive Linux server administration in a classified environment, cross-platform OS awareness, and meet degree/experience combination listed.
Red Hat Satellite, Ansible, HBSS, PRTG, Splunk, PowerShell, VMware, NFS, Microsoft Windows, Microsoft Active Directory, Cisco, Windows, Solaris, OSX, UNIX
1mo
Save
Mark Applied
Hide
Sr Principal Linux Systems Administrator - Secret
Boulder, Colorado, United States
$129k-$194k/yr OnsiteFull Time
6+ YOESecret clearance required; IAT Level II (8140) certification (e.g., Security+) required; 6+ years IT experience (Masters) or equivalent; Linux server administration in classified environments; cross-platform OS awareness; Red Hat Satellite and Ansible experience preferred.
Linux, Red Hat Satellite, Ansible, HBSS, PRTG, Splunk, PowerShell, VMware, NFS, Microsoft Active Directory, Windows, Solaris, OSX, UNIX, Cisco
2w
Save
Mark Applied
Hide
Staff Linux System Administrator, TS/SCI / Onsite: CO
Littleton, Colorado, United States
$105k-$184k/yr OnsiteFull Time
5+ YOEActive TS/SCI with CI poly, U.S. citizenship, DoD 8572 (e.g., Security+), 5+ years RHEL administration, scripting/automation (Ansible, Python, Bash, PowerShell), DISA STIGs and security hardening experience.
Red Hat Enterprise Linux, Ansible, Python, Bash, PowerShell, DISA STIGs, Nessus, Trellix, Splunk, ACAS, SCAP, NetApp
1mo
Save
Mark Applied
Hide
Cloud and Infrastructure Systems Administrator - Linux admin
Denver, Colorado, United States
$83k-$174k/yr OnsiteFull Time
7+ YOETS/SCI with Polygraph required; DoD 8570 IAT Level II (Security+ or CISSP) required or must obtain; Bachelor’s degree in CS/IT; ~7 years Linux system administration and network troubleshooting; cloud (AWS), DevOps, Puppet/IPA/Kubernetes/Ansible experience preferred.
Linux, Nutanix, AWS, IPA, Puppet, Kubernetes, Ansible
1mo
Save
Mark Applied
Hide
Cloud and Infrastructure Systems Administrator - Linux admin
Denver, Colorado, United States
$83k-$174k/yr OnsiteFull Time
7+ YOEDoD 8570 IAT Level II (Security+ or CISSP) or willingness to obtain; BS in CS/IT; 7+ years Linux server/desktop administration and network troubleshooting; DevOps knowledge; willingness to learn.
Linux, AWS, Puppet, IPA, Kubernetes, Ansible, Scripting
2mo
Save
Mark Applied
Hide
Systems Administrator
Lafayette, Colorado, United States
$120k-$170k/yr OnsiteFull Time
5+ YOE5+ years in Systems Administration; DoD Secret clearance; TS/SCI eligible preferred; Linux/RHEL, virtualization (VMware/Hyper-V), cloud (AWS/Azure), RMF, networking, security
Linux, RHEL, VMware, Hyper-V, AWS, Azure, RMF, Networking
1mo
Save
Mark Applied
Hide
Systems Sr Administrator (IT)
Denver, Colorado, United States
$78k-$119k/yr OnsiteFull Time
Senior UNIX/Linux systems administration in multi-location environments; production support; automation and open source tooling; strong ITIL practices.
Linux, OpenShift, Oracle, DB2, Puppet Enterprise, Confluence
1d
Save
Mark Applied
Hide
Systems Administrator II
Boulder, Colorado, United States
$90k/yr HybridFull Time
2+ YOE2–4 years systems administration experience, bachelor’s degree or equivalent, U.S. citizenship and ability to obtain Public Trust, macOS/Jamf, UNIX/Linux, Windows, networking, backups, account and patch management.
macOS, Jamf Pro, Apple Business Manager, UNIX, Linux, Windows, TCP/IP, DNS, DHCP, BigFix, PDQ Suite, Graylog, Druva, Active Directory
4w
Save
Mark Applied
Hide
Systems Administrator-Cleared
Denver or Folsom
$120k-$165k/yr OnsiteFull Time
3+ YOEActive TS/SCI required, 3+ years systems administration experience; manage Microsoft 365/Azure, Intune, Okta, AD, Windows/Linux servers, virtualization, Fortinet networking, and scripting (PowerShell/Bash/Python).
Microsoft 365, Microsoft Azure, Microsoft Intune, Okta, Microsoft Entra ID, Microsoft Exchange Online, Microsoft Teams, Microsoft SharePoint, Microsoft Defender, Windows Server, Linux, Ubuntu, RHEL, CentOS, VMware vSphere, Hyper-V, Fortinet, FortiGate, FortiSwitch, FortiClient, Active Directory, PowerShell, Bash, Python, ServiceNow, Jira Service Management
2w
Save
Mark Applied
Hide
Senior IT Systems Administrator
Broomfield, Colorado, United States
$110k-$175k/yr OnsiteFull Time
6+ YOE6+ years administering corporate IT systems; strong Microsoft 365/Entra ID, endpoint and SaaS administration; networking fundamentals; Windows/Linux endpoint lifecycle management; scripting (PowerShell, Python, Bash); GitLab and IaC experience.
Microsoft 365, Entra ID (Azure AD), Microsoft Intune, Jamf, Kandji, PowerShell, Python, Bash, GitLab, Infrastructure as Code (IaC), Windows, Linux, TCP/IP, DNS, DHCP, VPN
3mo
Save
Mark Applied
Hide
Systems Administrator - Security
Greenwood Village, Colorado, United States
$95k-$115k/yr OnsiteFull Time
2+ YOEBachelor’s degree in IT or related field or 5+ years’ related experience; US government contractor experience; Security+; Top Secret clearance; Windows and Linux proficiency; STIG/SCAP experience.
ACAS, Nessus, SCAP, STIGs, DISA, SCAP, MFA, SIEM, Splunk, McAfee HBSS, Windows, Linux, PowerShell, Python, BASH, Networking, Virtualization
2mo
Save
Mark Applied
Hide
Principal Systems Administrator
Aurora, Colorado, United States
OnsiteFull Time
15+ YOE15 years of Systems Administrator experience; Bachelor's degree or 5 additional years of experience; TS/SCI with Full Scope Polygraph.
UNIX, Windows, Networking
3mo
Save
Mark Applied
Hide
Tier 3 System Administrator – TS/SCI with Polygraph
Aurora, Colorado, United States
$111k-$150k/yr OnsiteFull Time
General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
5+ YOE5+ years of Linux/Windows system administration; TS/SCI with Polygraph; DoD IA certifications; US Citizenship. Bachelor's in Computer Science/Engineering or related field or equivalent experience.
Linux, Windows, Active Directory, DNS, DHCP, LDAP, PowerShell, VMware, SCCM, Outlook, JAVA, ITIL
1mo
Save
Mark Applied
Hide
Systems Administrator
Greenwood Village, Colorado, United States
$80k-$95k/yr HybridFull Time
3+ YOE3+ years systems admin/support experience with server, network, and cloud operations; experience with Windows AD, GPO, PowerShell, Intune/MDM, API tooling, disaster recovery, documentation, and stakeholder communication. Relevant certifications preferred.
Windows AD, GPO, PowerShell, API, MDM, Microsoft Intune, Linux
1mo
Save
Mark Applied
Hide
Senior Database Administrator (Open Rank)
Aurora or Denver or Colorado
$75k-$114k/yr HybridFull Time
2+ YOEBachelor's in CS/IS/Engineering or equivalent experience; 2+ years Microsoft SQL Server/Azure SQL DBA experience; experience with Azure, Windows/Linux, PL/SQL, CI/CD, Terraform, GitHub, Power BI/Tableau, VMware, data lake/warehouse, and security frameworks (HIPAA, NIST).
Microsoft Azure, Microsoft Azure SQL, Microsoft SQL Server, Microsoft Windows, Microsoft Windows Server, Linux, PL/SQL, CI/CD, GitHub, Terraform, Microsoft Power BI, Tableau, Oracle Database 19c, VMware, Confluence, API, NIST 800-53, NIST 800-171, HIPAA
2mo
Save
Mark Applied
Hide
ITS System Administrator (Lakewood, CO, US)
Lakewood, Colorado, United States
$78k-$98k/yr OnsiteFull Time
5+ YOE5+ years in systems administration; 2+ years configuring Azure/Office 365; strong Windows Server, virtualization, AD, backups; ITIL knowledge.
Microsoft Windows Server, Active Directory, Azure, Office 365, VMware, SQL, PowerShell, SharePoint, Exchange Online, Linux/Unix
2mo
Save
Mark Applied
Hide
Senior Database Administrator
Hopkins or Atlanta or Chicago or Denver or Irving
$120k-$141k/yr HybridFull Time
7+ YOEBachelor’s degree or equivalent; 7+ years IT experience; 7+ years design/development of technology infrastructure; Visa sponsorship not available.
NoSQL databases, MongoDB, Cassandra, Elasticsearch, Couchbase, Ansible, Linux, Kubernetes, Cloud
6d
Save
Mark Applied
Hide
Systems Administrator (TS/SCI Clearance Required with agreement to obtain CI Poly)
Alexandria or Chantilly or Englewood or Gaithersburg or Tucson or Saint Louis
OnsiteFull Time
Active TS/SCI clearance with agreement to obtain CI Poly, Linux/Windows administration, virtualization (VMware/KVM), automation (Ansible, PowerShell, Bash, Python), cloud (AWS GovCloud/Azure Government), STIG/RMF compliance, DoD 8570 IAT II/III, bachelor's degree preferred.
Red Hat Enterprise Linux, CentOS, Windows Server, VMware, KVM, Ansible, Bash, PowerShell, Python, AWS GovCloud, Azure Government, ACAS, Git, Jenkins, Docker, DNS, DHCP, Active Directory, PKI
Explore Jobs