37 senior it systems administrator jobs at 30 companies in Texas
1w
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Senior IT Systems Administrator
Houston, Texas, United States
OnsiteFull Time
3+ YOERequires 3+ years in IT support or systems administration, Windows 10/11 and Microsoft 365 troubleshooting, Active Directory, Group Policy, DNS, DHCP, Windows Server, Entra ID, networking, communication, documentation, and independent problem-solving.
Microsoft 365, Windows Server, Microsoft Intune, Microsoft Azure, Power Automate, PowerShell, Exchange Online, Microsoft SharePoint, Microsoft Teams, Microsoft Entra ID, Active Directory, Hyper-V, Azure Logic Apps, Microsoft Graph API, Microsoft Defender, Conditional Access, MFA, BitLocker, Windows 10, Windows 11, Group Policy, DNS, DHCP, VPNs, VLANs
1mo
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Sr. IT Systems Administrator, IT Applications
Hawthorne or Bastrop or Redmond
$95k-$150k/yr OnsiteFull Time
3+ YOE3+ years (with degree) or 5+ years experience managing enterprise applications, Atlassian administration, API/GraphQL/webhook integrations, scripting (Groovy/Python/Java), and strong customer-facing skills.
Jira Software, Jira Service Management, Confluence, RESTful APIs, GraphQL, webhooks, Groovy, Python, Java, SQL, ScriptRunner
3d
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IT Systems Administrator & Lab Operations Engineer
Houston, Texas, United States
OnsiteFull Time
5+ YOEBachelor's degree or equivalent certification and 5+ years of IT systems administration or technical support experience. Requires domain, endpoint, imaging, patching, networking, and onsite NASA JSC support experience.
ManageEngine, JAMF, Ivanti, Intune, PDQ, Lansweeper, ManageEngine Service Desk, Track-IT, Zendesk, GPO, Linux/Unix, SAML, ADFS, PowerShell, Bash, Active Directory, Azure AD/Entra, Group Policy, VirtualBox, SQL
23h
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IT - Network Operations - Senior Systems Administrator
Irving, Texas, United States
OnsiteFull Time
10+ YOERequires 10 years of server or network administration experience and proven experience implementing and operating at least five infrastructure areas, including Windows Server, virtualization, networking, storage, messaging, patching, backup, and security systems.
Microsoft Sentinel, Microsoft Defender, KQL, Azure, Cisco, Cisco IOS XE, Cisco Smart Account, CCW-Renewals, Cisco Catalyst 8200, Constellix DNS, DigiCert, Aruba, HPE, SCCM, Cisco Expressway, VMware, vCenter, Veeam Backup and Replication, Backup Exec, iScalar 500 Library, Cisco Call Manager, Cisco Unity, Cisco Jabber, Contact Call Center Express, Exchange, Proofpoint, Global Relay, BlackBerry Work, System Center Configuration Manager, MBAM, Palo Alto, PGP Encryption, Sophos Encryption, Symantec Antivirus, Cisco Firepower, CyberArk Identity Management, SAN, NAS
4d
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IT Systems Administrator & Lab Operations Engineer
Houston or United States
OnsiteFull Time
5+ YOEBachelor's degree or equivalent certification and 5+ years of IT systems administration or technical support experience. Requires domain, endpoint, imaging, networking, and troubleshooting expertise; onsite NASA work and background checks required.
ManageEngine, JAMF, Ivanti, Microsoft Intune, PDQ, Lansweeper, ManageEngine Service Desk, Track-IT, Zendesk, SAML, ADFS, PowerShell, Bash, Active Directory, Azure AD, Microsoft Entra, Group Policy, VirtualBox, SQL
1mo
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Senior IT Administrator
Austin, Texas, United States
OnsiteFull Time
5+ YOE5+ years IT support/systems administration, BS preferred, advanced troubleshooting, Microsoft 365 and AWS experience, Active Directory/Azure AD/Entra ID expertise, endpoint and security knowledge, strong communication.
Microsoft Outlook, Microsoft Teams, Microsoft SharePoint, Microsoft OneDrive, Microsoft Intune, Microsoft Purview, Azure AD/Entra ID, Active Directory, AWS, VPN
2w
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IT Site Administrator (Bilingual)
San Antonio or Vega Baja
OnsiteFull Time
4+ YOEAssociate degree in computer science or technical field, 4–6 years of system administration experience, bilingual English/Spanish fluency, and experience with Windows, networks, Microsoft 365, Active Directory, and IT hardware.
Microsoft Teams, Microsoft OneDrive, Microsoft Exchange, Microsoft SharePoint, Entra Admin, Active Directory, Intune, Microsoft 365, Windows, MSP360, Wasabi, AWS, 3CX, TCP/IP, DNS, DHCP, VPN, VLAN, VMware, Cisco Meraki, UNIFI, Endpoint Central
2w
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IT Systems Engineer
Pasadena, Texas, United States
OnsiteFull Time
5+ YOEBachelor’s degree or equivalent experience, 5+ years supporting IT/OT infrastructure or industrial systems, network administration, cybersecurity, virtualization, troubleshooting, and technical documentation.
Windows, VMware, Hyper-V, Nutanix AHV, LAN, WAN, PCS, PIMS, LIMS, NIST Cybersecurity Framework, ISA/IEC 62443
1mo
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IT Systems Engineer
Dallas, Texas, United States
OnsiteFull Time
7+ YOE7+ years systems administration experience with Microsoft Azure and Microsoft 365; strong Windows Server, identity, endpoint management, security, networking, automation, and documentation skills.
Microsoft Azure, Microsoft 365, Microsoft Entra ID, Active Directory, Microsoft Intune, Windows Autopilot, PowerShell
2w
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Sr. IT System & Network Administrator
Drummondville or Las Vegas or Reno or Moncton or Austin or Montreal or Atlanta
OnsiteFull Time
7+ YOEDEC or higher education in computer science or equivalent experience; 7+ years in complex systems and network administration; cloud, hybrid infrastructure, networking, security, automation, and project leadership; fluent French and English.
IaaS, PaaS, MFA, VPNs, Windows Server
3w
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IT Site Administrator (55511)
Texas, United States
$74k-$96k/yr OnsiteFull Time
5+ YOE5+ years IT experience with service desk, network, desktop and servers; 3+ years system administration; bachelor\u0002s or equivalent experience; strong troubleshooting, project and mentoring skills.
Microsoft Office, Microsoft Exchange Server, Active Directory, System Center Configuration Manager (SCCM), DNS, DHCP, Azure, AWS
2mo
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Staff IT Systems Engineer
Georgetown, Texas, United States
$125k-$183k/yr OnsiteFull Time
5+ YOEBachelor’s degree in computer science or equivalent experience, 5+ years as a Linux administrator, enterprise systems engineering experience, Linux scripting, virtualization, storage, automation, security hardening, and high-availability services.
Linux, Bash, Perl, Python, DHCP, TFTP, DNS, SSH, CentOS, Ubuntu, Red Hat Linux, Ansible, VMware ESXi, vSAN, LUN, NetApp, QNAP, NAS, Pure Storage, EMC
2mo
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Staff IT Systems Engineer
Georgetown, Texas, United States
$125k-$183k/yr OnsiteFull Time
5+ YOEBachelor's degree or equivalent, 5+ years Linux administration, experience with high-availability services, Linux tooling (Bash, Perl, Python, Samba), Ansible, VMware ESXi, enterprise storage, system hardening, backups, and documentation.
Linux, CentOS, Ubuntu, RedHat Linux, Samba, Bash, Perl, Python, DHCP, TFTP, DNS, SSH, Ansible, VMware ESXi, vSAN, NetApp, QNAP, Pure Storage, EMC, LUNs
5d
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IT Systems Engineer (G-Project)
Houston, Texas, United States
OnsiteFull Time
5+ YOEBachelor's degree or equivalent experience; 5–7 years in IT infrastructure or systems administration; 3+ years supporting Windows Server and virtualization; expertise in Windows, Linux, cloud, security, and incident management.
Windows Server, Linux, Active Directory, DNS, DHCP, Group Policy Objects (GPOs), Domain Controllers, NTP, Certificate Services, SCOM, Zabbix, SCCM, Ansible Tower, Entra ID Connect, RBAC, Site Recovery
1mo
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Sr IT Systems Engineer
Houston, Texas, United States
OnsiteFull Time
5+ YOE5+ years infrastructure and network administration experience with Azure and Microsoft 365; strong Windows/Linux, networking, security monitoring, incident response, and troubleshooting skills; Bachelor's preferred.
Azure, Microsoft 365, Microsoft Copilot, Microsoft Defender, Microsoft Purview, Microsoft Sentinel, Intune, PowerShell, SIEM
6d
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Database & IT Administrator
Longmont or Midland
$85k-$110k/yr OnsiteFull Time
5+ YOERequires 5+ years of IT and systems management experience, 3+ years managing SQL cloud databases, PowerShell and Visual Code scripting, G Suite expertise, and ability to collaborate with engineering and science teams.
SQL, PowerShell, G Suite, Google Docs, Google Slides, Google Sheets, GitHub, Visual Code, SCADA
2mo
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IT Business Systems Analyst
Houston, Texas, United States
HybridFull Time
5+ YOEBachelor's in CS/IS/Engineering (or equivalent), 5+ years Power Platform and SharePoint administration, PowerShell proficiency, strong analytical and troubleshooting skills.
Microsoft Power Platform, Canvas Apps, Model-Driven Apps, Microsoft Power Automate, Microsoft Dataverse, Business Process Flows, Connectors, PowerShell, Microsoft SharePoint Online, SPFx, Copilot Studio, Microsoft AI Builder, Microsoft Power BI, Azure Functions, Logic Apps, Azure Runbooks
5d
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26-119.B1 - Sr. IT Systems Analyst (SAP BASIS and Security Administrator)
Houston, Texas, United States
OnsiteFull Time
15+ YOERequires 15+ years of information systems experience emphasizing SAP BASIS, SAP Security, infrastructure, upgrades, patching, monitoring, and change management; bachelor's degree or relevant experience preferred.
SAP BASIS Administration, SAP Security Administration, SAP Solution Manager, CHARM, TSM, SAP HANA, ABAP, SQL, SAP Data Services, SAP RISE, PRA, UOM
2w
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Sr. IT System & Network Administrator/Administrateur principal ou Administratrice principale, systèmes et réseaux TI
Drummondville or Las Vegas or Reno or Moncton or Austin or Montreal or Atlanta
OnsiteFull Time
7+ YOERequires 7+ years in system and network administration, cloud and hybrid infrastructure expertise, Windows Server knowledge, networking, automation, security, project leadership, and French-English fluency.
Windows Server, IaaS, PaaS, VPN, MFA
3w
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IT Senior System Admin
San Antonio, Texas, United States
OnsiteFull Time
5+ YOEBachelor's in information systems, computer science, or equivalent experience; 5+ years of business systems administration experience with configuration, security, cross-functional support, troubleshooting, and change management.
NetSuite, DAP, REST, SOAP, iPaaS
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