39 windows system administrator jobs at 19 companies in Ballwin, MO

1mo
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System Administrator
Earth City, Missouri, United States
$60k-$85k/yr OnsiteFull Time
Credit Control
Credit Control: Provides debt recovery and accounts receivable management services.
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
3w
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System Administrator II / System Administrator III – Hybrid – Chesterfield, MO (St. Louis)
Chesterfield, Missouri, United States
HybridFull Time
Experitec
Experitec: Provides industrial automation products and process control engineering services.
5+ YOE5+ years IT experience with 3+ years as a system administrator and 2+ years managing Windows Server; experience with Windows/Linux, virtualization (VMware), Active Directory/Azure AD, cloud (Microsoft Azure), scripting (PowerShell/Bash/Python), backup/DR, and enterprise security.
Windows Server, Linux, Active Directory, Azure Active Directory, Office 365, Group Policy, DNS, DHCP, VPN, VLAN, PowerShell, Bash, Python, VMware, vCenter, ESXi, Microsoft Azure, SAN, NAS, SIEM, SAML, LDAP, OIDC, SSO, Microsoft Copilot, GitHub Copilot
2mo
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Windows Systems Administrator (Associate or Mid-Level)
Berkeley, Missouri, United States
$78k-$130k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
1+ YOE1+ years Windows Server and Windows desktop OS experience; VMware; basic network skills; security and program IT infrastructure familiarity.
VMware, Windows Server, Windows OS, McAfee, Splunk, HBSS
2mo
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Windows Systems Administrator (Associate or Mid-Level)
Berkeley, Missouri, United States
OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
1+ YOE1+ years in Windows Server and Windows desktop OS, hardware install, and software deployment; ability to obtain SAP access; Security+ preferred.
Windows Server, Windows Desktop OS, VMware, Active Directory, McAfee, HBSS, PowerShell
1w
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Systems Administrator
St. Louis, Missouri, United States
$98k-$132k/yr OnsiteFull Time
General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
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
1mo
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System Engineer- ArcGIS
Redlands or St. Louis or Vienna
$121k-$198k/yr OnsiteFull Time
Esri
Esri: Developing software for digital mapping and spatial data analysis.
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
1w
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Systems Administrator
St. Louis, Missouri, United States
$98k-$132k/yr OnsiteFull Time
GDIT
GDITNYSE: GD: Delivers IT and mission services to government agencies.
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
1mo
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Help Desk /  Systems Administrator / Service Desk Engineer
St. Louis, Missouri, United States
OnsiteFull Time
Forward Slash Technology
Forward Slash Technology: Providing managed IT services, cybersecurity, and cloud solutions.
3+ YOE3-5 years in a tiered service or help desk; degree in IT or related field; Windows networking and system administration knowledge; strong communication; eager to learn and provide white-glove support.
Autotask, Datto, Atera, PowerShell, Windows, DNS, VPN, Microsoft 365, O365
1w
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Systems Administrator – AWS GovCloud (DoD Classified Environments)
Saint Louis or Belleville or Sun Prairie
OnsiteFull Time
NV5
NV5: Provides engineering, consulting, and geospatial solutions for infrastructure projects.
3+ YOEActive DoD Secret clearance, IAT Level II/III or equivalent cert, 3+ years systems administration experience managing AWS GovCloud workloads, Windows Server proficiency, scripting/IaC experience, and knowledge of DoD security frameworks.
AWS GovCloud (US), EC2, S3, RDS, IAM, CloudTrail, CloudWatch, VPC, KMS, SCAP, ACAS, Splunk, ELK stack, Windows Server, Bash, Python, PowerShell, Terraform, CloudFormation, ECS, EKS, AWS Organizations, Service Control Policies (SCPs), RMF, DISA STIGs, FedRAMP High, NIST SP 800-53
6d
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Sales Administrator
St. Charles, Missouri, United States
OnsiteFull Time
Eastern Metal Supply
Eastern Metal Supply: Distributor and manufacturer of custom and standard aluminum products.
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
2w
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IT Systems Administrator
Warrenton, Missouri, United States
OnsiteFull Time
Warrenton Oil Company
Warrenton Oil Company: Operates convenience stores, fuel stations, and hotels in Missouri.
Support and maintain Windows Server, Microsoft 365, Active Directory/Entra ID, Group Policy, networks, workstations and business applications; strong troubleshooting and documentation skills; participate in on-call rotation.
Microsoft 365, Windows Server, Active Directory/Entra ID, Group Policy, POS
2w
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Infrastructure Systems Administrator
Springfield or St. Louis
$139k-$170k/yr OnsiteFull Time
Accenture Federal Services
Accenture Federal ServicesNYSE: ACN: Provides technology and consulting services to U.S. federal agencies.
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)
1d
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Systems Administrator / Systems Infrastructure Lead
Scott Air Force Base, Illinois, United States
OnsiteFull Time
EPS Corporation
EPS Corporation: Provides engineering, logistics, and technical solutions to federal agencies.
5+ YOE5+ years enterprise Windows/Linux/virtualization/SAN and Active Directory administration; DoD experience with STIGs; SECRET clearance; DoDM 8140.03 and related certifications (Security+, CySA+); backup/DR tooling experience.
Windows Server 2019, Windows Server 2022, RHEL 8, RHEL 9, NetApp ONTAP, VMware vSphere, vCenter, Active Directory, Veeam, SCCM, SolarWinds, Commvault, SIPRNet
1w
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Systems Administrator – AWS GovCloud (DoD Classified Environments)
Belleville, Illinois, United States
OnsiteFull Time
NV5
NV5: Provides engineering, testing, inspection, and infrastructure consulting services.
3+ YOEActive DoD Secret clearance, IAT Level II/III certification (e.g., Security+ CE, CASP+, CISSP),3+ years systems administration with AWS GovCloud experience, Windows Server proficiency, scripting/IaC experience, DoD cybersecurity knowledge.
AWS GovCloud (US), EC2, S3, RDS, IAM, CloudTrail, CloudWatch, VPC, KMS, SCAP, ACAS, CloudFormation, Terraform, Bash, Python, PowerShell, Splunk, ELK, Security Hub, SIEM, ECS, EKS, AWS Organizations, Service Control Policies
2w
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IT Systems Administrator
Warrenton, Missouri, United States
OnsiteFull Time
Warrenton Oil Group
Warrenton Oil Group: Operates a network of fuel stations and convenience stores.
Support and maintain servers, Microsoft 365, Active Directory/Entra ID, networking, workstations, backups, and provide technical support across multiple locations.
Microsoft 365, Windows Server, Active Directory/Entra ID, Group Policy, POS
4w
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Systems Administrator - Contract
St. Louis, Missouri, United States
$35-$50/hr OnsiteFull Time, Contract
World Wide Technology
World Wide Technology: Global technology solutions provider and systems integrator.
Design, coordinate and implement IT infrastructure and unified communications, provide network and server support, travel 15–50% (domestic/international), valid driver's license, lift 50 lbs, participate in on-call rotation.
Windows, Mac
2w
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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
North Point Technology
North Point Technology: Technology services and engineering for federal government missions.
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
1mo
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Seasonal, Operations Administrative Assistant (Part Time)
Kirkwood, Missouri, United States
OnsiteSeasonal, Part Time
H&R Block: A tax preparation that provides tax filing and related support while combining human expertise with digital innovation.
1+ YOEHigh school diploma, 1+ years administrative experience, customer service skills, proficiency with Microsoft Teams/Office/Windows and internal systems, strong communication, problem-solving, and organizational skills.
Microsoft Teams, Microsoft Office, Microsoft CoPilot, Windows
1w
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Safety Video Reviewer
Pontoon Beach, Illinois, United States
$24-$33/yr OnsiteFull Time
Agency for Community Transit
Agency for Community Transit: Provides public bus and paratransit transportation services.
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
2d
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EOC Support Analyst
Saint Louis or Norristown
$23/hr HybridFull Time
TierPoint
TierPoint: Provider of data center, cloud, and managed IT services.
Provide customer-facing incident intake, basic system administration, troubleshooting, escalation, and documentation; strong customer service, typing 50 WPM, MS Office and Windows experience.
Microsoft Office, Windows

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