53 linux administrator jobs at 26 companies in O'Fallon, IL

2w
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Linux Systems Engineer
Springfield or St. Louis
$108k-$143k/yr OnsiteFull Time
General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
5+ YOEActive TS/SCI clearance with eligibility for CI Polygraph, 5+ years Linux systems engineering experience, Nutanix AHV administration, Ansible automation, and scripting (Bash/Python).
Linux, Red Hat Ansible, Bash, Python, Nutanix, AHV, Prism Central, Prism Element, Satellite, Capsule, Grafana, Zabbix, HAProxy, F5, Docker, Kubernetes, VMware
2mo
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Linux Systems Administrator - HPC (TS/SCI Clearance Required)
Alexandria or Chantilly or Springfield or Saint Louis
OnsiteFull Time
North Point Technology
North Point Technology: Technology services and engineering for federal government missions.
Active TS/SCI clearance, strong Linux/RHEL administration, HPC cluster (Slurm/MPI) experience, STIG/IAVA remediation, VM backup experience, scripting for automation, and DoD 8570-compliant certification (e.g., Security+).
Linux, RHEL, Slurm, MPI, STIG, IAVA, Jira, Confluence
2w
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Linux Systems Engineer
Springfield or St. Louis
$125k-$135k/yr OnsiteFull Time
D2 Consulting
D2 Consulting: Provides IT engineering and cybersecurity services to federal agencies.
5+ YOEActive TS/SCI clearance, 5+ years Linux systems engineering experience, Nutanix and Ansible expertise, scripting (Bash/Python), RHEL administration, and bachelor\u0002s degree or equivalent.
Nutanix, AHV, Prism Central, Prism Element, Ansible, Bash, Python, Red Hat (RHEL), Satellite, Capsule, Grafana, Zabbix, HAProxy, F5, Docker, Kubernetes, VMware, PowerShell, OAuth, LDAP, SSO
5d
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LEAD ADMINISTRATOR L1
O Fallon, Missouri, United States
$60k-$135k/yr OnsiteFull Time
Wipro
WiproNYSE: WIT: Global technology services and consulting for digital transformation.
5+ YOEPostgreSQL core skill with experience in architecture, performance tuning, HA/DR, backups (Barman), replication, Linux administration, scripting (Shell/Python), and production troubleshooting.
PostgreSQL, Barman, PEM, Linux, Shell, Python
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
1w
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Database Administrator
St. Louis or Chantilly or Springfield
$90k-$190k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
7+ YOEActive TS/SCI clearance (polygraph capable), Bachelor\u0002s degree, 7+ years database experience, AWS Cloud Practitioner, Oracle/Grid/ASM/Enterprise Manager, Linux, scripting, AWS services, and IT security experience.
Oracle, SQL Server, PostgreSQL, MySQL, MarkLogic, MongoDB, DynamoDB, RMAN, Oracle Grid Infrastructure, ASM, Oracle Enterprise Manager Cloud Control, Momentum, PeopleSoft, Linux, AWS, EC2, EBS, DMS, Lambda, S3
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
3w
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Cloud Administrator
Scott Air Force Base, Illinois, United States
$80k-$120k/yr OnsiteFull Time
SAIC
SAICNYSE: SAIC: Provides engineering, IT, and mission support services to government.
4+ YOEBachelor's degree with 4+ years experience, active DoD Secret clearance, AWS Cloud Practitioner, IAT Level II (e.g., Security+) or equivalent, CE certification for cloud, RedHat Linux and AWS experience required.
RedHat Enterprise Linux, AWS ECS, EC2, CLI, Amazon Web Services (AWS), AWS GovCloud, Transit Gateway, VPNs, VPC Endpoints, Route53, BIND, CloudTrail, CloudWatch, Git, Jenkins, Groovy, YML, AWS Workspaces, ECS, EKS, Fargate, IAM, Security Groups, CloudFormation
3w
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Cloud Administrator
Scott AFB, Illinois, United States
OnsiteFull Time
SAIC
SAICNASDAQ: SAIC: Provides government and defense clients with technology and engineering services.
4+ YOEBachelor's degree with 4+ years experience, active DoD Secret clearance, AWS Cloud Practitioner and IAT Level II certification (e.g., Security+), experience with AWS services, RedHat Enterprise Linux, networking, and cloud automation.
AWS ECS, EC2, CLI, AWS, Route53, BIND, CloudFormation, Git, Jenkins, Groovy, YML, CloudTrail, CloudWatch, Security Groups, IAM, AWS Workspaces, EKS, Fargate, RedHat Enterprise Linux
5d
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Systems Administrator / Systems Infrastructure Lead
Scott Air Force Base, Illinois, United States
$115k-$130k/yr OnsiteFull Time
Computer World Services
Computer World Services: Provides IT modernization and cybersecurity solutions for federal government agencies.
5+ YOE5+ years enterprise Windows/Linux systems administration, virtualization, SAN/NAS, Active Directory, backup/DR; DoDM 8140.03 qualification and Secret clearance required; Security+ or CySA+ preferred.
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 / 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
1mo
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AWS ECDS Systems Administrator
St. Louis or United States
FieldContract
Abile Group
Abile Group: Provides IT, cybersecurity, and program management services to government agencies.
4+ YOETS/SCI clearance with CI poly required, Bachelor's in a technical field, 4+ years relevant experience, DoD 8140.01/8570.01-M IAT Level II certification, AWS administration, automation with Python/Bash, AWS CLI and CloudFormation.
AWS, EC2, EBS, VPC, IAM, AWS CLI, CloudFormation, Python, Bash, Linux
1w
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Administrator, Server
Saint Louis, Missouri, United States
OnsiteFull Time
Spire
SpireNYSE: SR: Provides natural gas utility services to homes and businesses.
4+ YOE4+ years IT experience required; manage Active Directory, virtual and physical servers, VMware, Office 365; strong troubleshooting, change control, and disaster recovery skills.
Office 365, VMware, Windows, Linux, ITSM
1mo
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Database Administrator
St. Louis, Missouri, United States
OnsiteFull Time
Freedom Technology Solutions Group
Freedom Technology Solutions Group: Provides geospatial and software engineering solutions for national security agencies.
3+ YOEActive TS/SCI clearance, Bachelor’s degree or equivalent, 3+ years administering enterprise databases (PostgreSQL preferred), SQL scripting, cloud and DevSecOps experience, IaC and Kubernetes familiarity.
PostgreSQL, PostGIS, Oracle, SQL, Git, GitLab CI/CD, Terraform, CloudFormation, Helm, Ansible, Kubernetes, OpenShift, AWS, Azure, Google Cloud, EC2, Lambda, S3, Spark, Hadoop, Pandas, NumPy, Tableau, Matplotlib, Microsoft Power BI, Microsoft Word, Microsoft PowerPoint, Microsoft Excel, Linux, Windows
6d
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AWS ECDS Systems Administrator
St. Louis, Missouri, United States
OnsiteFull Time
Abile Group
Abile Group: Provides engineering and IT services to federal government agencies.
4+ YOETS/SCI with CI poly, Bachelor's in technical field, 4+ years relevant experience, DoD 8140.01/8570 IAT Level II, AWS infrastructure and Linux experience, scripting with Python/Bash, EM security practices.
AWS, EC2, EBS, VPC, IAM, AWS CLI, CloudFormation, Python, Bash
1w
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QA Automation Engineer with Network Testing (Python/Linux) experience
Creve Coeur, Missouri, United States
$53k-$93k/yr HybridFull Time
Cognizant
CognizantNASDAQ: CTSH: Provides IT consulting and technology services to global enterprises.
5+ YOEBachelor's degree in CS or related,5+ years QA experience including automation,performance and system testing,strong Linux administration,Python and Bash scripting,network protocol and diagnostic experience.
Python, Bash, GitHub Copilot, ChatGPT, Claude, tcpdump, Wireshark, Linux, Windows
2w
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Senior Database Administrator - ETL
St. Louis, Missouri, United States
RemoteFull Time
Enterprise Mobility
Enterprise Mobility: Provider of vehicle rental and diverse mobility solutions.
3+ YOE3+ years Oracle DBA experience with Data Guard, Oracle OEM, AWS/PostgreSQL/MySQL, Unix scripting, SAS Data Integration Studio, SQL expertise, security awareness, US work authorization and residence, CST core hours.
Oracle, Oracle Enterprise Manager (OEM), PostgreSQL, MySQL, SAS Data Integration Studio, IBM Workload Scheduler, PowerDesigner, Bitbucket, Teradata, MSSQL Server, Unix, SQL, Terraform, AWS, Microsoft Azure
1w
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QA Automation Engineer with Network Testing (Python/Linux) experience
Creve Coeur, Missouri, United States
$53k-$93k/yr HybridFull Time
Cognizant
CognizantNasdaq: CTSH: Provides global information technology and business process outsourcing services.
5+ YOEBachelor's in CS or related,5+ years QA experience across manual, automation, performance and system testing; strong Linux administration; Python and Bash proficiency; experience with real-time/low-latency systems and network diagnostics.
Python, Bash, Linux, tcpdump, Wireshark, GitHub Copilot, ChatGPT, Claude, Windows
1mo
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Infrastructure Engineer
Maryland Heights, Missouri, United States
OnsiteFull Time
Curium
Curium: Manufacturer and distributor of diagnostic and therapeutic radiopharmaceuticals.
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
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Geospatial Systems Engineer – Multiple Positions at Junior/Mid/Senior Levels
St. Louis or St. Charles
OnsiteFull Time
NV5
NV5NASDAQ: NVEE: Technical engineering and consulting for infrastructure and energy projects.
8+ YOETop Secret/TS-SCI clearance, Bachelor's in STEM, 8+ years experience with enterprise ArcGIS deployments, scripting (Python/PowerShell/JavaScript/C#), RDBMS/SQL, and Windows/Linux administration.
ArcGIS, ArcGIS Enterprise, ArcGIS Desktop, ArcGIS Online, Portal for ArcGIS, ArcGIS Runtime, Python, PowerShell, JavaScript, C#, SQL Server, Oracle, PostgreSQL, Windows, Linux