95 junior system administrator jobs at 70 companies in Commerce City, CO

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System and Desktop Administrator
Denver, Colorado, United States
HybridFull Time
E2 Optics
E2 Optics: Provides low-voltage technology integration and infrastructure solutions.
1+ YOEHigh school diploma or GED, one year of technology experience, and hardware, software, network troubleshooting, and operating system knowledge. Requires communication, customer service, confidentiality, and physical mobility.
Helpdesk, Internet, operating system, scissor lifts, telehandlers, boom lifts, UTVs
3w
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System Administrator- Must have TS/SCI Poly clearance
Aurora, Colorado, United States
$69k-$131k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
2+ YOEActive transferable TS/SCI with CI poly, DoD 8570 IAT Level 2 cert, bachelor\u0002s and ~2 years experience, Linux RedHat and Microsoft Windows experience, virtualization/cloud (Citrix, VMware, AWS), 24x7 operations support.
Linux RedHat, Microsoft Windows, Citrix, VMware, Amazon Web Services (AWS), Cloudera, Oracle, Dell/EMC, Isilon/PowerScale, NetApp
2w
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Project Administrator
Denver, Colorado, United States
$45k-$83k/yr HybridFull Time
Trane Technologies
Trane TechnologiesNYSE: TT: Global provider of heating, ventilation, and air conditioning solutions.
0+ YOEHigh school diploma or GED and up to two years of related experience or training. Requires communication, problem-solving, prioritization, basic accounting, and financial systems experience.
HVAC, BAS
2w
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Office Administrator
Monument, Colorado, United States
$18-$22/hr OnsiteFull Time
Caliber Collision
Caliber Collision: Provider of automotive collision repair and glass replacement services.
2+ YOE2+ years customer-facing experience, 1+ year AP/AR/payroll preferred, valid driver’s license, ability to use multiple software systems including Microsoft Office, strong communication skills.
Microsoft Office
2d
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Systems Administrator I
Thornton, Colorado, United States
$62k-$93k/yr OnsiteFull Time
Adams 12 Five Star Schools
Adams 12 Five Star Schools: Operates K-12 public schools in the northern Denver area.
1+ YOEAssociate degree in information systems, computer science, systems administration, or related field, or two years of relevant experience substituted. One to two years of IT infrastructure experience preferred; Windows/Linux knowledge required.
Windows, Linux, VMware
3w
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Office Administrator - UniFirst
Aurora, Colorado, United States
$53k-$73k/yr OnsiteFull Time
UniFirst
UniFirstNYSE: UNF: Provides uniform rental, workwear, and facility service solutions.
Prefer two-year degree and ~2 years management experience; strong communication, people-management, payroll/HR support, data entry, customer service, and proficiency with Microsoft Word, Excel, PowerPoint, Access and UniFirst systems.
Microsoft Word, Microsoft Excel, PowerPoint, Access, UniFirst Account Management System
3w
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Systems Administrator II
Broomfield, Colorado, United States
$79k-$135k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.
2+ YOEBachelor's degree or equivalent experience, 2+ years systems administration, CompTIA Security+/DoD 8570 IAT II, Active Directory, VMware, endpoint hardening, STIG/RMF familiarity, TS/SCI eligible.
Active Directory, VMware, PowerShell, Python, Bash, RHEL, Windows
1mo
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Systems Administrator, Tech Infrastructure
Saint Petersburg or Denver or Southfield
$60k-$100k/yr OnsiteFull Time
Raymond James
Raymond JamesNew York Stock Exchange: RJF: Provides wealth management, investment banking, and retail banking services.
0+ YOETranslate functional specs, document interfaces, analyze and validate requirements, produce reports, and support system development; bachelor’s degree in accounting, business administration, or computer and information science required.
2mo
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Linux Administrator II
Westminster, Colorado, United States
$33-$39/hr OnsiteFull Time
CesiumAstro
CesiumAstro: Develops phased array communication systems for satellites and aircraft.
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
1w
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Systems Administrator I
Boulder, Colorado, United States
$75k/yr HybridFull Time
RIVA Solutions
RIVA Solutions: Delivers digital transformation and IT solutions to government agencies.
Requires a bachelor's degree or equivalent experience, Windows systems knowledge, networking fundamentals, ticketing-system experience, communication skills, U.S. work authorization, and ability to obtain Public Trust clearance.
Windows, Sunflower, Service Desk Plus, LAN, WLAN, TCP/IP, DNS, DHCP, Microsoft Office, UNIX, Linux, macOS, Druva, BigFix, TeamViewer, Jamf Pro, Apple Business Manager, FISMA, NIST 800-53, Risk Management Framework (RMF)
2w
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Technical Systems Administrator II
Louisville, Colorado, United States
$87k-$120k/yr OnsiteFull Time
Sierra Space
Sierra Space: Develops spacecraft and infrastructure for orbital and space transportation
2+ YOEBachelor's or equivalent and typically 2+ years IT systems experience. Proficiency in OS installation/configuration, networking, virtualization, scripting, backup/recovery, Windows/Active Directory administration.
Ansible, Puppet, Chef, AWS, Azure, Active Directory, Computer Management
1w
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Systems Administrator (AHT)
Aurora, Colorado, United States
$92k-$138k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
2+ YOEBachelor's degree and 2 years of IT experience; Linux and Windows server administration, VMware, NAS storage, Top Secret clearance, Full Scope Polygraph, and DoD 8570 IAT Level 2 certification required.
Linux, Windows, VMware, NAS Storage, NetApp, ONTAP, Red Hat Enterprise Linux (RHEL), Windows 10, Windows Server, Group Policies (GPOs), Active Directory, Microsoft SharePoint, Splunk, Tenable, Nessus, ESXi, iptables, Wiki
1w
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Systems Administrator (AHT)
Aurora, Colorado, United States
$92k-$138k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
2+ YOEBachelor's degree and 2 years of IT experience; Linux and Windows server administration, VMware, NAS storage, active Top Secret clearance, Full Scope Polygraph, and DoD 8570 IAT Level 2 certification required.
Linux, Windows, VMware, NAS, NetApp, ONTAP, Red Hat Enterprise Linux (RHEL), NISPOM, DCID 6/3, ICD 503, RMF, STIG, JAFAN, JSIG, RAID, Single Sign-On, ESXi, iptables, Windows 10, Windows Server, Group Policies (GPOs), Active Directory, Microsoft SharePoint, Splunk, Tenable, Nessus
1mo
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IT Administrator / SOC Analyst
Denver, Colorado, United States
$60k-$85k/yr HybridFull Time
Apollo Information Systems
Apollo Information Systems: Provides intelligence-led cybersecurity services and managed security programs.
2+ YOE2+ years IT/systems admin or helpdesk experience; systems administration, networking, cloud (M365/Azure/AWS), and basic scripting (PowerShell, Bash, Python); SIEM/EDR familiarity and willingness to support SOC shifts.
Microsoft M365, Azure, AWS, PowerShell, Bash, Python, Microsoft Entra, Microsoft Exchange, Microsoft Intune, Microsoft SharePoint, CrowdStrike, Sophos, SentinelOne, Exabeam, Azure Sentinel, Splunk, Fortinet, SIEM, EDR, MDR, IDS/IPS, Google Workspace
1mo
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Systems Administrator, DCO (Colorado Passport Agency)
Centennial, Colorado, United States
$66k-$106k/yr OnsiteFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
0+ YOEActive U.S. citizenship and Secret clearance, Windows systems administration experience, ServiceNow/Remedy, SCCM, Active Directory, vSphere, SQL, Microsoft Defender, networking fundamentals; bachelor/master/associate/HS experience combinations listed.
SCCM, Active Directory, vSphere, SQL, Microsoft Defender, ServiceNow, Remedy, IBML Scanner Appliances, Cisco
1mo
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Sr. Subcontracts Administrator
Centennial or United States
$80k-$110k/yr FieldFull Time
MasTec
MasTecNew York Stock Exchange: MTZ: Builds and maintains energy, communications, and utility infrastructure.
0+ YOEBachelor's degree or equivalent, 0-3 years subcontracting/procurement experience, US citizenship required, proficiency with ERP systems and Microsoft Word/Excel/PowerPoint, analytical and negotiation skills.
ERP, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
1mo
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Sr. Subcontracts Administrator
Centennial, Colorado, United States
$80k-$110k/yr FieldFull Time
MasTec
MasTecNYSE: MTZ: Provides infrastructure engineering, construction, and maintenance services.
0+ YOEBachelor's in related field or equivalent, 0–3 years subcontracting/procurement experience, US citizenship required, experience with strategic sourcing, negotiations, ERP systems and Microsoft Word/Excel/PowerPoint.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint
2w
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Systems Administrator Technician _TS/SCI with Polygraph
Aurora, Colorado, United States
$64k-$69k/yr OnsiteFull Time
GDIT
GDITNYSE: GD: Delivers IT and mission services to government agencies.
1+ YOERequires 1+ year of related experience, technical training, certification, or degree, CompTIA Security+ CE, TS/SCI with polygraph clearance, U.S. citizenship, and knowledge of hardware, systems administration, troubleshooting, and ITIL practices.
CompTIA Security+ CE, VoIP, Configuration Management Database (CMDB), ITIL
2w
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Systems Administrator Technician _TS/SCI with Polygraph
Aurora, Colorado, United States
$64k-$69k/yr OnsiteFull Time
General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
1+ YOERequires 1+ year related experience, technical training, certification or degree, CompTIA Security+ CE, TS/SCI with polygraph clearance, U.S. citizenship, and knowledge of IT infrastructure, hardware, systems administration, and ITIL practices.
VoIP, ITIL, Install Move Add Change Disposal (IMACD), Configuration Management Database (CMDB), Technical Exchange Meetings (TEMs), CompTIA Security+ CE
1mo
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Systems Administrator, DCO (Colorado Passport Agency)
Centennial, Colorado, United States
$66k-$106k/yr OnsiteFull Time
Peraton
Peraton: Provides advanced technology and mission support for government agencies.
0+ YOEU.S. citizen with active Secret clearance. Windows systems admin experience, troubleshooting hardware/software, enterprise end-user support, networking basics, and ServiceNow or Remedy experience. Degree/experience combinations specified.
ServiceNow, Remedy, SCCM, Active Directory, vSphere, SQL, Microsoft Defender, IBML Scanner Appliances, Intermec PM43, TCP/IP, DNS

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