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4 results for Systems Security Administrator in Houston, TX

Systems Administrator

Houston, TX
remote
Temporary / Contract
66.5 - 77 USD / Hourly
We are looking for an experienced Systems Administrator to support and maintain core IT infrastructure in Houston, Texas. This Long-term Contract position focuses on ensuring reliable performance across server, desktop, and virtualized environments while delivering strong operational support to end users. The ideal candidate will bring hands-on expertise with Microsoft technologies, directory services, and enterprise hardware platforms. Success in this role requires a proactive approach to troubleshooting, system stability, and ongoing environment optimization. Responsibilities: • Manage and support Active Directory services, including user accounts, group policies, permissions, and access controls. • Administer Microsoft Windows Server environments to maintain availability, performance, and security across business systems. • Provide technical support for Windows 10 workstations, resolving issues related to software, hardware, and user access. • Maintain and troubleshoot Dell infrastructure and endpoint hardware to ensure dependable day-to-day operations. • Support Citrix environments by monitoring session performance, addressing connectivity issues, and assisting with application access. • Perform system updates, patching, and routine maintenance activities to keep infrastructure current and secure. • Investigate technical incidents, identify root causes, and implement effective solutions to minimize downtime. • Document system configurations, support procedures, and operational changes to improve consistency and knowledge sharing.
2026-05-27T00:00:00Z

Security Network Engineer

Houston, TX
onsite
Temporary / Contract
55 - 65 USD / Hourly
Key ResponsibilitiesCybersecurity Responsibilitieso Design, implement, and maintain security controls across networks, endpoints, and cloud environments.o Coordinate with 3rd party partners to monitor, analyze, and respond to security incidents using SIEM tools and threat intelligence feeds.o Coordinate vulnerability assessments and penetration testing with 3rd party partners; recommend and implement remediation actions.o Manage firewalls, IDS/IPS systems, endpoint protection, and identity/access management solutions.o Develop and maintain cybersecurity policies, procedures, and best practices.o Develop, implement, and maintain a holistic cybersecurity program.o Support compliance initiatives, e.g., NIST, ISO, CMMC, Ecto Proactively perform regular risk assessments and security audits to ensure continued resilience.Networking Responsibilitieso Deploy, maintain, and troubleshoot corporate infrastructure systems including, but not limited to, Meraki, Fortinet, Juniper, VMware, and NAS/SAN.o Administer Microsoft Active Directory, DHCP, DNS, and GPOs in a multi-site environment.o Support and maintain firewalls, wireless networks, VPNs, and SDWAN links.o Respond to infrastructure issues across physical and cloud environments using RMM tools.o Develop and maintain accurate network documentation, system inventories, and standard operating procedures.o Provide Tier 2–3 support across departments and collaborate with cross-functional teams.Other duties as assigned by supervisor.
2026-05-18T00:00:00Z

Security Engineer

Houston, TX
onsite
Temporary / Contract
55 - 65 USD / Hourly
Role Summary The Senior Security Engineer is a hands-on technical expert responsible for designing, implementing, and operating security technologies in mid-size Enterprise environment. This position focuses on engineering, maintaining, and continuously improving enterprise security controls across identity, endpoint, network, and application security domains. The engineer collaborates closely with infrastructure, networking, and development teams to ensure security controls are seamlessly integrated into enterprise systems and services, thereby strengthening and advancing the organization’s overall security posture. Core Skills & Technical Requirements Identity and Endpoint Security (Advanced–Expert) Strong hands-on experience securing Microsoft enterprise environments, including: • Microsoft Entra ID identity governance and administration • Privileged Identity Management (PIM) implementation and operations • Endpoint and identity protection using Microsoft Defender XDR • Endpoint management and hardening with Microsoft Intune • Data protection and monitoring using Microsoft Purview including: ○ Data Loss Prevention (DLP) ○ Insider Risk Management / Insider Threat monitoring Candidate should be able to design, deploy, and operate these controls, not just administer them.
2026-05-18T00:00:00Z

Database Administrator

Houston, TX
onsite
Temporary / Contract
0 - 0 USD / Yearly
Robert Half is looking for a database administrator who loves the challenge of solving problems with multiple layers of complexity. If you are an efficient problem solver with highly tuned decision making skills, this may be the position for you. What you get to do every single day · Install, configure, and maintain all SQL Server instances across development, staging, and production environments · Ensure database server topology, configuration, and maintenance are designed and executed to meet SLA objectives · Advise on database design, tuning options, and other potential issues · Fix SQL Server service outages as they occur, including after hours and weekends · Configure SQL Server monitoring utilities to minimize false alarms · Baseline system performance and monitor for deviation, recommending and implementing improvements to slow running queries · When performance issues arise, you'll figure out the most effective way to increase performance including hardware purchases, server configuration changes, or index/query changes
2026-05-22T00:00:00Z