23 it systems engineer jobs at 17 companies in Frederick, CO

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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
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
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Systems Engineer-IT / Level 3
Boulder, Colorado, United States
$86k-$151k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
3+ YOERequires 3+ years IT systems engineering experience with Linux/Windows scripting, system administration, Active Directory, server and network maintenance; proficiency in Python, Perl, Bourne/Bash, Ansible; BS degree and US citizenship with ability to obtain Top Secret clearance.
Python, Perl, Korn, Bourne/Bash, Ansible, Windows, RHEL Linux, Active Directory, CVS, SVN, Git, GitLab, GitLab CI, Cisco routers and switches, Juniper Firewalls, SAN, NAS
2mo
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IT Systems Engineer I
Greeley, Colorado, United States
$74k-$82k/yr OnsiteFull Time
Hensel Phelps
Hensel Phelps: Provides commercial construction management and building development services.
2+ YOECollege diploma/degree or 2+ years’ experience; certifications in Windows Server, VMware, or ITIL preferred; strong Azure, networking, scripting, and Linux/Windows administration.
Azure, VMware vSphere, NSX, SQL Server, Windows Server, DNS, DHCP, IIS, RDS, PowerShell, Python, Linux/Unix, NLB, PKI/CA/SSL, Azure AD, Active Directory
1mo
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Optical IT Engineer
Denver, Colorado, United States
OnsiteFull Time
SAIC
SAICNASDAQ: SAIC: Provides government and defense clients with technology and engineering services.
14+ YOETS/SCI with CI poly required, bachelor’s degree in physics/engineering/math plus extensive (≈14+) experience in optical/laser or photonics systems; experience with JIRA, optical modeling, astrodynamics, and leadership of technical teams.
JIRA, MATLAB, Python, C++, Zemax, MODTRAN, STK, LEEDR, HardShell, Helios
1mo
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Senior Systems Administrator - IT Engineer
Golden, Colorado, United States
$100k-$120k/yr OnsiteFull Time
Lunar Outpost
Lunar Outpost: Develops autonomous robotic systems and rovers for lunar exploration.
4+ YOEBachelor's in IT or equivalent, 4+ years systems/network admin experience, Azure Fundamentals cert, experience with ESXi, AWS, Kubernetes, Okta, scripting (Bash, Python, PowerShell), and familiarity with NIST frameworks.
ESXi, VMware, Microsoft Azure, SharePoint Online, Kubernetes, Okta, Okta Flows, Bash, Python, PowerShell, AWS, Terraform, Office 365, Intune, Jamf Pro
2d
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IT Engineer - Cloud & Identity
Denver or Naperville
$115k-$125k/yr HybridFull Time
PTMA Financial Solutions
PTMA Financial Solutions: Provides treasury and investment services to public sector entities.
3+ YOE3+ years in cloud/identity or systems engineering; hands-on IAM experience (SSO, MFA, provisioning, access reviews); Microsoft 365 tenant admin; PowerShell or Python scripting; ability to travel ~15-20%; US work authorization required.
Okta, Microsoft Entra ID, Microsoft 365, Proofpoint, PowerShell, Python, SPF, DKIM, DMARC
1mo
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Optical IT Engineer
Denver, Colorado, United States
$160k-$200k/yr OnsiteFull Time
SAIC
SAICNYSE: SAIC: Provides engineering, IT, and mission support services to government.
14+ YOEUS citizen with active TS/SCI and Special Access eligibility plus CI polygraph consent; Bachelor's in physics/engineering/math (advanced degrees preferred); 9–14+ years relevant optical/space engineering experience; expertise in optical/laser systems, SDA, modeling/simulation, and technical leadership.
JIRA, MATLAB, Python, C++, Zemax, MODTRAN, STK
1mo
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IT Support Engineer
Lakewood, Colorado, United States
$30-$34/hr OnsiteFull Time
Horizon Ag Products
Horizon Ag Products: Manufacturer of humic-based biostimulants and soil health products.
2+ YOEAssociate degree in Computer Science or Information Systems or 2 years of equivalent work experience; strong Windows/Microsoft 365 knowledge; basic networking; security mindset; good communication; cloud concepts; bonus SharePoint, Zero Trust, Intune familiarity.
Windows, Microsoft 365, SharePoint, Intune, zero trust, Cloud services (SaaS IaaS PaaS)
5d
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Field Service Engineer – IT & Systems
Denver, Colorado, United States
$80k-$100k/yr FieldFull Time
Vision RT
Vision RT: Provides 3D camera systems for surface guided radiation therapy.
Install, configure, support and maintain medical device systems; strong Microsoft Windows and networking skills; ability to perform physical installations, travel up to 100%, and deliver customer-facing technical support.
Microsoft Windows, Microsoft Windows Server, SQL, RAID, ping, tracert, ipconfig, Event Viewer
3d
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IT Operations Engineer I
Englewood, Colorado, United States
$82k-$100k/yr HybridFull Time
Jeppesen ForeFlight
Jeppesen ForeFlight: Provides integrated software and data solutions for aviation flight planning.
2+ YOE2+ years HelpDesk/IT support experience; experience with Microsoft 365, Intune or Jamf, ticketing systems, strong troubleshooting and communication skills.
Microsoft 365, Exchange Online, OneDrive, SharePoint, Slack, Microsoft Intune, Jamf Pro, Jira Service Management (JSM), Google Workspace, ProofPoint, Zoom, Zoom Rooms, Confluence, Jira Software, PowerShell, Python, Claude, Copilot
6d
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IT Support Desk Engineer II
Denver, Colorado, United States
HybridFull Time
Heartland Business Systems
Heartland Business Systems: Delivers comprehensive IT solutions and technology consulting services.
3+ YOE3+ years in IT service/systems or network administration, customer-facing experience, associate degree or equivalent, strong Windows/server/Mac/mobile knowledge, certifications preferred (A+, Network+, Server+, Microsoft O365/Azure, CCT).
Microsoft Windows, Mac OS, Apple iOS, Android, Cisco, HP, Palo Alto, ConnectWise Manage, ConnectWise Automate, VMware, vSphere, LogicMonitor, Veem Backup
1h
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IT Infrastructure Engineer I, II, III, IV
Brighton, Colorado, United States
$85k-$165k/yr HybridFull Time
United Power
United Power: Member-owned electric cooperative providing electricity distribution and services.
Design, deploy, support, and improve hybrid cloud, network, end-user computing, IAM, and systems infrastructure; strong Windows, VDI, MDM, scripting, cloud, and cybersecurity knowledge.
Microsoft Windows, Active Directory, Microsoft SCCM, Azure Virtual Desktop, VMware Horizon, Citrix Virtual Desktops, PowerShell, Python, MobileIron, Intune, Workspace One, MaaS 360, Azure, AWS, Microsoft 365, Windows, Linux, BGP, OSPF, SASE, VPN, MLAG, NGFW, DNS, OSI, PKI, ADCS, NAC, FIDO2
1mo
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IT Cloud Engineer
Niwot, Colorado, United States
HybridFull Time
Particle Measuring Systems
Particle Measuring Systems: Manufactures particle counters and cleanroom contamination monitoring systems.
8+ YOE8+ years IT systems/cloud engineering experience with extensive Microsoft Azure, on-premise infrastructure, networking, security, automation (PowerShell/Python/Bash), Azure certifications (AZ-104/AZ-105), and ITIL knowledge.
Microsoft Azure, Entra AD, Conditional Access, Microsoft Intune, Microsoft Active Directory Services, Microsoft Windows Server OS, VMware, Microsoft Office 365, Microsoft SharePoint, Microsoft Exchange Online, Microsoft Teams, Microsoft Viva, Microsoft Defender XDR, Cisco, Secure Endpoint, Microsoft Windows Defender, Zscaler, Citrix, Bash, PowerShell, Python, Autodesk, AutoCAD, Poly, Crestron, AMX
3w
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Senior IT Cloud Engineer – AI Driven Operations & Platform Engineering
Denver, Colorado, United States
$121k-$159k/yr OnsiteFull Time
Prologis
PrologisNYSE: PLD: Develops and leases global industrial and logistics real estate.
Experience designing and operating AWS and Azure infrastructure; EC2, Lambda, RDS, S3, DynamoDB, IAM; Terraform or CloudFormation; CI/CD pipelines; Python; identity and endpoint systems (Entra ID, Intune, SAML/OAuth); Git; building AI-assisted workflows.
AWS, EC2, Lambda, RDS, S3, DynamoDB, IAM, AWS WorkSpaces, Azure, Terraform, CloudFormation, Microsoft Azure DevOps, Python, Git, SAML, OAuth, Cognito, Microsoft Entra ID, Microsoft Intune, Bash, PowerShell, OpenAI Agents SDK, LangChain, n8n, MCP, ServiceNow, CI/CD
1mo
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The Mechanical Project Engineer Who Gets It Right Every Time
Littleton, Colorado, United States
$73k-$115k/yr OnsiteFull Time
Maxson Engineering
Maxson Engineering: Mechanical, electrical, and technology design services for buildings.
Provide mechanical/HVAC design for building systems, apply building codes, use Autodesk Revit and AutoCAD, validate designs via research and analysis, and apply plumbing and fire protection knowledge.
Autodesk Revit, AutoCAD
3mo
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IT Engineering Professionals IRES - SSFB
Colorado Springs or Irwin
$70k-$180k/yr OnsiteFull Time
Amentum
AmentumNYSE: AMTM: Provides engineering, technology, and mission support to government agencies.
Systems engineering, Linux, data analytics, cybersecurity, virtualization, cloud, infrastructure; DoD Secret clearance with potential for Top Secret.
Linux, Red Hat, Bash/Shell, Elasticsearch, Logstash, Kibana, Trellix Endpoint Security, EDR, XDR, VMware, Kubernetes, Docker, AWS, Infrastructure
1mo
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IT and Database Manager
Longmont, Colorado, United States
$85k-$115k/yr OnsiteFull Time
Clean Chemistry
Clean Chemistry: Develops on-site chemical generation technologies for industrial water treatment.
5+ YOEMinimum 5 years IT/systems management experience; expertise with G-Suite; experience with cloud databases and cybersecurity; ability to support hardware/software, work with engineers, and develop SOPs. Coding/scripting experience preferred.
G-Suite, Google Docs, Google Slides, Google Sheets, SCADA
2w
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DIRECTOR, IT
Boulder, Colorado, United States
$170k-$185k/yr OnsiteFull Time
The GEO Group
The GEO GroupNYSE: GEO: Provides correctional, detention, and community reentry services.
10+ YOE5+ MgmtBachelor's in CS/IS/Engineering, 10+ years IT experience (systems admin, network, telecom, DevOps, service desk), 5+ years management, US citizenship and residency requirements, client approval ability, Microsoft Office proficiency.
Microsoft Office Suite
1mo
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IT Program Analyst
Mercer Island or Denver or Seattle or Arlington or Austin
$60k-$90k/yr HybridFull Time
Fleet Data Centers
Fleet Data Centers: Designs, builds, and operates mega-scale hyperscale data center campuses.
3+ YOEBachelor's degree in CS/IT/Engineering/Business or related, 3+ years in IT program management/operations/business systems analysis, Microsoft Office experience, experience with governance, risk, budgeting, and data center operations preferred.
Microsoft Office, Application Programming Interfaces (APIs), Agile Software Development Lifecycle (SDLC)