40 windows system administrator jobs at 21 companies in Gillespie, IL
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System Administrator
Earth City, Missouri, United States
$60k-$85k/yr OnsiteFull Time
5+ YOE5+ years system administration experience; Windows Server and Linux administration; Active Directory, DNS, DHCP, Group Policy; virtualization (VMware/Hyper-V); scripting (PowerShell, Bash); bachelor’s degree or relevant certifications.
Windows Server, Linux, Active Directory, DNS, DHCP, Group Policy, VMware, Hyper-V, VLANs, TCP/IP, Firewalls, PowerShell, Bash, Appgate SDP, Microsoft 365, Azure AD Sync, ConnectWise Service Manager, SentinelOne, Rapid7, Cisco Umbrella, CyberArk
2mo
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System Administrator - Senior
Scott Air Force Base, Illinois, United States
OnsiteFull Time
8+ YOEActive Secret clearance,8+ years DoD/federal systems administration experience with Windows Server, Active Directory, SCCM, virtualization, storage/backup, STIG/vulnerability remediation, scripting (PowerShell), and strong troubleshooting.
Windows Server, Active Directory, Group Policy, DNS, DHCP, SMTP, SCCM, VDI, NAS, SAN, NTFS, CIFS, iSCSI, NFS, PowerShell, JavaScript, batch, VMware, DoD PKI
1mo
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Systems Administrator
St. Louis, Missouri, United States
$98k-$132k/yr OnsiteFull Time
5+ YOETS/SCI clearance required,5+ years IT systems administration experience,skills in backups,software updates,troubleshooting,VDI,Windows,Citrix,SCCM,SMS;strong written/verbal communication.
Virtual Desktop Infrastructure (VDI), Windows 11, Windows 10, Citrix, SMS, SCCM, KVM, VOIP
2mo
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System Engineer- ArcGIS
Redlands or St. Louis or Vienna
$121k-$198k/yr OnsiteFull Time
8+ YOE8+ years experience deploying and administrating enterprise ArcGIS or comparable systems; Windows/Linux sysadmin; scripting (Python, PowerShell, JavaScript, C#); RDBMS and SQL; Top Secret/SCI clearance and US citizenship; Bachelor\u0002s in STEM.
ArcGIS, ArcGIS Enterprise, ArcGIS Desktop, ArcGIS Online, Portal for ArcGIS, ArcGIS Runtime, RDBMS, SQL, SQL Server, Oracle, PostgreSQL, Python, PowerShell, Javascript, C#, Windows, Linux
2w
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Jr. Systems Administrator
Scott Air Force Base, Illinois, United States
$60k-$71k/yr OnsiteFull Time
1+ YOERequires 1+ year of systems administration or IT support experience, active Secret clearance with TS eligibility, DoD 8140/8570 IAT Level II certification, and Windows Server or Linux familiarity.
Active Directory, DNS, Group Policy, Windows Server, Linux, HBSS, ACAS, SIEM, Microsoft Excel
1w
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Systems Administrator
St. Louis, Missouri, United States
HybridFull Time
2+ YOE2+ years of progressive IT experience preferred, with Microsoft 365, Windows, IT policy management, endpoint administration, troubleshooting, user lifecycle management, and security compliance knowledge.
Microsoft 365, Exchange Online, Microsoft Teams, Microsoft SharePoint, Microsoft OneDrive, Microsoft Entra ID, Microsoft Intune, Remote Monitoring and Management (RMM), Windows
3w
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Systems Administrator
St. Louis, Missouri, United States
$60k-$72k/yr OnsiteFull Time
2+ YOEBachelor's degree in computer science or related field, or 2–6 years of related experience. Requires operating systems, project management, Windows Server, Active Directory, Cisco UCS, and VMware experience.
Microsoft Active Directory, Cisco Unified Computing System (UCS), VMware Hypervisor, Windows Server, DNS, DHCP, SAN
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Systems Administrator
St. Louis, Missouri, United States
$98k-$132k/yr OnsiteFull Time
5+ YOETS/SCI clearance required, 5+ years IT systems/admin experience, BA/BS or equivalent, expertise in desktop support, VDI, Windows/Citrix/SCCM/SMS, backups, troubleshooting, and strong communication.
Virtual Desktop Infrastructure (VDI), Microsoft Windows 11, Microsoft Windows 10, Microsoft Windows 7, Citrix, SMS, SCCM, KVM, VOIP
3w
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Sr. Systems Administrator
St. Louis, Missouri, United States
OnsiteFull Time
8+ YOEBachelor's degree with 8+ years or master's degree with 6+ years, including 8+ years of enterprise systems administration. Requires Windows/Linux, virtualization, scripting, cybersecurity, Security+ CE, and active TS/SCI clearance.
Microsoft Windows Server, VMware vSphere, DNS/DHCP, Group Policy, PowerShell, Bash, Python, VMware vCenter, Git, ServiceNow, Microsoft Word, Microsoft Excel, Microsoft Office, Red Hat Enterprise Linux (RHEL), Active Directory, Ansible, SCCM/MECM, Splunk, Elastic Stack, AWS
1mo
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Sales Administrator
St. Charles, Missouri, United States
OnsiteFull Time
Provide sales support and order coordination, follow up on credits/RMAs/backorders, monitor systems and delivery windows, collaborate cross-functionally, and communicate with customers and sales teams.
CIMS, WebHelm, Accuterm, Optimiroute, M3
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Systems Administrator – AWS GovCloud (DoD Classified Environments)
Belleville, Illinois, United States
OnsiteFull Time
3+ YOEActive DoD Secret clearance, IAT Level II/III,3+ years systems administration with AWS GovCloud, Windows Server, RMF/DISA STIGs/NIST 800-53 knowledge, scripting/IaC (Bash,Python,PowerShell,Terraform,CloudFormation).
AWS GovCloud (US), EC2, S3, RDS, IAM, CloudTrail, CloudWatch, VPC, KMS, SCAP, ACAS, Splunk, ELK stack, Windows Server, Bash, Python, PowerShell, Terraform, CloudFormation, AWS Organizations, Service Control Policies (SCPs), ECS, EKS, CI/CD, RMF, DISA STIGs, NIST SP 800-53, SIEM
1w
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IT Systems Administrator II
Creve Coeur, Missouri, United States
OnsiteFull Time
2+ YOETwo years of systems administration experience required, with Microsoft 365, Active Directory, Entra ID, virtualization, cloud-integrated systems, PowerShell automation, and infrastructure project experience. Associate's degree preferred.
Microsoft 365, Azure, Exchange Online, Microsoft Teams, Microsoft SharePoint, Microsoft OneDrive, Active Directory, Entra ID (Azure AD), Microsoft Copilot, PowerShell, Windows, Linux, Unix, Nutanix, HSA, FSA, CHUBB, 401K, Employee Stock Ownership Plan (ESOP)
1mo
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Infrastructure Systems Administrator
Springfield or St. Louis
$139k-$170k/yr OnsiteFull Time
Administer RHEL/Windows servers, manage AWS infrastructure for a self-hosted ServiceNow platform, support ServiceNow AI integrations, and hold an active TS/SCI clearance.
RHEL 9, Windows Server, AWS, EC2, RDS, Application Load Balancer (ALB), Security Groups, AWS Bedrock, ServiceNow, Now Assist, AI Search, Predictive Intelligence, AI Control Tower, Model Context Protocol (MCP)
2d
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Network Technician - IT Department
Frontenac, Missouri, United States
$71k/yr OnsiteFull Time
Bachelor's degree in Computer Science or Management Information Systems; Windows Server, LAN/WAN, SAN, virtual server, and Cisco router experience; valid driver's license; strong communication and organizational skills.
Windows Server, Active Directory Domain Services, Group Policies (GPOs), Cisco routers, SAN, DNS, DHCP, Internet Access Manager, firewall, anti-virus, network-monitoring software, Microsoft Word
3w
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Security Engineer and IT Systems Admin.
St. Louis or Jefferson City
OnsiteFull Time
2+ YOEActive Secret clearance, bachelor's degree or equivalent experience, Security+ or higher certification, and at least 2 years in cybersecurity, information assurance, system administration, or IT operations.
Risk Management Framework (RMF), Security Control Assessments (SCAs), Change Control Board (CCB), VM images, Department of Defense Instruction (DoDI), National Institute of Standards and Technology (NIST), Security Technical Implementation Guide (STIG), Assured Compliance Assessment Solution (ACAS), Nessus, Security Content Automation Protocol (SCAP) Compliance Checker (SCC), Enterprise Mission Assurance System (eMASS), Control Correlation Identifiers (CCI), Committee on National Security Systems Instruction (CNSSI), ISEC-MED, Plan of Action and Milestones (POAM), Security Control Assessor-Validator (SCA-V), Security Impact Analyses (SIA), Windows
1mo
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Safety Video Reviewer
Pontoon Beach, Illinois, United States
$24-$33/yr OnsiteFull Time
High school diploma/GED, familiarity with onboard DVR systems and Windows file handling, proficiency with Microsoft Excel and Word, strong communication, attention to detail, ability to work independently and maintain confidentiality.
Microsoft Excel, Microsoft Word, Windows
2w
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Help Desk Tier III (Systems Administrator)
Scott Air Force Base or St. Louis
OnsiteFull Time
Bachelor's degree in a technical field, or any bachelor's degree with an accepted certification; scripting experience; enterprise technology experience; and ability to obtain and maintain DoD Secret clearance.
PowerShell, Bash, Python, TCP/IP, DHCP, DNS, VPN, VMware, Hyper-V, KVM, Windows Server
3w
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Cloud Engineer
St. Louis, Missouri, United States
HybridFull Time
4+ YOE4+ years IT experience with at least 2 years as a system/cloud engineer, Azure and Windows Server expertise, PowerShell, Microsoft 365 administration, strong troubleshooting and communication skills.
Azure, Microsoft 365, PowerShell, Windows Server, IIS, SQL Server, Azure Front Door, Key Vault, AI Foundry, blob storage, app services, Azure Well-Architected Framework
1w
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IT Support Specialist
St. Louis, Missouri, United States
$50k-$55k/yr OnsiteFull Time
2+ YOERequires 2+ years supporting Windows and Mac systems, Active Directory and Office 365/Exchange administration, troubleshooting, communication, and after-hours support. Associate degree or equivalent experience preferred.
Windows, Mac, Windows Active Directory, Microsoft 365, Microsoft Exchange, SCCM, WinPE, Office 365, PowerShell, Cisco IP Phones, Call Manager, Microsoft Teams, Zoom, Webex
1w
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Service Desk Engineer II / III
St. Louis, Missouri, United States
OnsiteFull Time
3+ YOELevel II requires 3+ years of support experience; Level III requires 5+ years of advanced support and escalation leadership. Requires Microsoft 365, Windows, networking, identity, systems administration, security, documentation, and client communication skills.
Microsoft 365, Windows, RMM, PSA, PowerShell, Kaseya, ConnectWise
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