3w
Save
Mark Applied
Hide
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
1w
Save
Mark Applied
Hide
System Administrator II / System Administrator III – Hybrid – Chesterfield, MO (St. Louis)
Chesterfield, Missouri, United States
HybridFull Time
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
1w
Save
Mark Applied
Hide
IT Systems Administrator
Warrenton, Missouri, United States
OnsiteFull Time
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
1w
Save
Mark Applied
Hide
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)
1w
Save
Mark Applied
Hide
IT Systems Administrator
Warrenton, Missouri, United States
OnsiteFull Time
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
2w
Save
Mark Applied
Hide
Systems Administrator - Contract
St. Louis, Missouri, United States
$35-$50/hr OnsiteFull Time, Contract
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
5d
Save
Mark Applied
Hide
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
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
2w
Save
Mark Applied
Hide
Infrastructure Engineer
Maryland Heights, Missouri, United States
OnsiteFull Time
Hands-on server/infrastructure operations (Windows/Linux), monitoring, backup/restore, Active Directory administration (scoped), ITSM/ITIL practices, on-call availability, and working in regulated GxP environments.
Windows Server, Linux, VMware, Microsoft Hyper-V, Microsoft Azure, Veeam, Active Directory, Group Policy (GPO), CMDB
1mo
Save
Mark Applied
Hide
Infrastructure Engineer
St. Louis, Missouri, United States
OnsiteFull Time
5+ YOEBachelor's in CS/IT or equivalent, 5+ years infrastructure/systems administration experience; expertise with Windows Server, Active Directory, virtualization, cloud, backups/DR, scripting, networking (DNS/DHCP/TCP/IP), and security controls.
Windows Server, Active Directory, DNS, DHCP, TCP/IP
1mo
Save
Mark Applied
Hide
Database Engineer
Springfield or Vienna or St. Louis
OnsiteFull Time
5+ YOE5+ years in database design/administration; Oracle/SQL Server/PostgreSQL/SAP HANA; SQL and Python; Linux/UNIX/Windows; GIS/geospatial concepts; BS in CS/Math/GIS; strong communication.
Oracle, SQL Server, PostgreSQL, SAP HANA, SQL, Python, Linux, UNIX, Windows, ArcGIS, Geospatial
2mo
Save
Mark Applied
Hide
Infrastructure Architect
St. Louis, Missouri, United States
HybridFull Time
BS in Engineering or Computer Science; extensive AWS and DevOps experience; Teamcenter PLM installation/administration; scripting; Terraform; AWS CloudFormation; Docker/Kubernetes/OpenShift; security clearance willingness to obtain; travel up to 75%.
Terraform, AWS CloudFormation, Ansible, Jenkins, Packer, AWS Code, Docker, Kubernetes, OpenShift, Teamcenter PLM, DoD RMF, Java EE, .NET, Oracle, Microsoft SQL, UNIX, Linux, Windows Server, Active Directory, SAML, SSL