4 Results for Systems Administrator Jobs in Houston, TX

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Systems Administrator

Sugar Land, TX
onsite
Permanent / Full Time
120000 - 140000 USD / Yearly
We are seeking a Systems Administrator with experience managing enterprise infrastructure and leading cloud migration initiatives. This role will support on-premises and cloud environments while helping drive modernization efforts across the organization.Responsibilities<ul><li>Administer Windows Server, Active Directory, Citrix, Exchange 2019, Exchange Online, file servers, and remote access solutions.</li><li>Support and maintain hybrid cloud environments.</li><li>Lead infrastructure and cloud migration projects from planning through implementation.</li><li>Develop and maintain disaster recovery and business continuity processes.</li><li>Perform system upgrades, patching, maintenance, and security remediation.</li><li>Monitor system performance, availability, and compliance.</li><li>Coordinate with vendors and internal IT teams to deliver infrastructure projects.</li><li>Provide occasional on-call support.</li></ul>
2026-10-05T00:00:00Z

Systems Security Administrator

Houston, TX
onsite
Temporary / Contract
57 - 66 USD / Hourly
We are looking for a Systems Security Administrator to support and strengthen the security posture of our transport operations in Houston, Texas. This Long-term Contract position is ideal for someone who is detail oriented and can monitor threats, respond to incidents, and maintain security platforms across a Microsoft-centered environment. The role requires a hands-on approach to endpoint protection, vulnerability management, and defensive monitoring, along with the ability to collaborate effectively with technical teams. Success in this position will come from combining sound security judgment with clear communication and dependable operational support. Responsibilities: • Monitor Microsoft security technologies, including Office 365 E5 security capabilities and endpoint protection tools, to identify, assess, and resolve cyber threats. • Respond to security events with urgency by investigating alerts, containing risks, and supporting remediation efforts across affected systems. • Administer and optimize vulnerability management platforms such as Rapid7 or Tenable, including tuning scans and helping drive effective patching activities. • Review intrusion detection and prevention alerts, examine suspicious behavior, and conduct proactive threat-hunting activities to uncover potential risks. • Maintain and support security applications through installation, configuration, updates, and ongoing system upkeep. • Help develop, apply, and reinforce security policies and technical controls across the environment. • Work closely with internal teams to address security issues tied to patch cycles, system hardening, and operational challenges. • Provide support during after-hours or weekend security incidents when timely response is required. • Contribute to DevSecOps-related security efforts where applicable, including collaboration with development and toolchain environments such as GitHub. • Assist in strengthening security architecture by applying knowledge of Windows systems, networking, firewalls, and defensive best practices.
2026-10-07T00:00:00Z

Systems Engineer

Rosenberg, TX
onsite
Temporary to Hire
47.956 - 55.528 USD / Hourly
We are looking for a Systems Engineer to support and strengthen core infrastructure operations in Texas. This contract position with potential for a permanent role is ideal for a hands-on, detail-oriented individual who can manage Microsoft-based environments, maintain reliable system performance, and contribute to day-to-day technical stability. The role will work across server administration, identity management, messaging systems, and virtualized access technologies while helping ensure a secure and efficient IT environment. Responsibilities: • Administer and maintain Windows Server environments to support reliable performance, availability, and security across business systems. • Manage Active Directory and Azure Active Directory, including user access, group policies, identity controls, and directory health. • Support Citrix-based platforms to provide stable remote access and virtual application delivery for end users. • Oversee Microsoft Exchange administration, including mailbox management, system functionality, and issue resolution. • Monitor infrastructure components, troubleshoot system-related problems, and implement corrective actions to minimize downtime. • Partner with internal teams and contract technical resources to maintain continuity of operations and address infrastructure priorities. • Document configurations, operational procedures, and support activities to improve consistency and knowledge sharing.
2026-10-06T00:00:00Z

Senior Network Administrator

Pasadena, TX
onsite
Permanent / Full Time
110000 - 125000 USD / Yearly
We are looking for an experienced Senior Network Administrator to support and strengthen the enterprise technology environment in the Houston downtown area. This role leads the reliability, performance, and security of network infrastructure while partnering with internal teams and external vendors to resolve issues and improve long-term operations. The ideal candidate brings deep technical expertise across on-premises and cloud-based platforms, along with a proactive approach to standardization, risk reduction, and continuous improvement. Responsibilities:• Define and uphold enterprise network standards, architecture guidelines, and infrastructure best practices across the organization.• Deploy, configure, and support servers, network hardware, and virtual infrastructure to maintain dependable day-to-day operations.• Investigate outages, connectivity problems, and system alerts, escalating when needed and coordinating with IT teams and service providers to prevent repeat issues.• Provide technical support for IP-connected devices such as printers, scanners, and mobile endpoints to ensure consistent connectivity and usability.• Review network activity for suspicious behavior, identify vulnerabilities, and implement corrective measures to protect systems and data.• Manage records for network equipment, software assets, and licensing to maintain accurate inventory and lifecycle visibility.• Keep network diagrams, monitoring tools, and alerting structures current so device status, location, and incidents can be tracked at all times.• Perform recurring tasks such as vulnerability scans, access reviews, patch scheduling, backup validation, and disaster recovery testing to strengthen operational resilience.• Guide users and stakeholders on new systems, tools, and equipment by delivering practical training and support as needed.
2026-10-05T00:00:00Z

4 results for Systems Administrator in Houston, TX