39 windows system administrator jobs at 19 companies in Ballwin, MO
1mo
Save
Mark Applied
Hide
1mo
System Administrator
Earth City, Missouri, United States
$60k-$85k/yrOnsiteFull Time
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
System Administrator II / System Administrator III – Hybrid – Chesterfield, MO (St. Louis)
Chesterfield, Missouri, United States
HybridFull Time
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
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
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.
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
Help Desk / Systems Administrator / Service Desk Engineer
St. Louis, Missouri, United States
OnsiteFull Time
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
Systems Administrator – AWS GovCloud (DoD Classified Environments)
Saint Louis or Belleville or Sun Prairie
OnsiteFull Time
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
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.
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
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)
Systems Administrator / Systems Infrastructure Lead
Scott Air Force Base, Illinois, United States
OnsiteFull Time
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
Systems Administrator – AWS GovCloud (DoD Classified Environments)
Belleville, Illinois, United States
OnsiteFull Time
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.
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
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.
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
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.
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.