Senior Network Administrator

Description

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.

Requirements • At least 5 years of experience in network administration, with senior-level capability in supporting enterprise environments.

• Hands-on knowledge of routing and switching concepts, including work with platforms such as Fortinet, Cisco, or Meraki.

• Experience troubleshooting network performance, connectivity, and infrastructure issues in both on-premises and cloud environments.

• Working knowledge of Microsoft server technologies, Windows Server platforms, Active Directory, Azure Active Directory, and related cloud services.

• Demonstrated ability to modernize, maintain, and secure corporate systems through structured technical administration.

• Strong analytical and problem-solving skills with the ability to respond effectively to incidents and recurring technical challenges.

• Willingness to travel occasionally to company locations and participate in an on-call support rotation.

• Ability to meet employment requirements, including background screening, candidate screening requirements, physical evaluation, and legal authorization to work. Technology Doesn't Change the World, People Do.®

Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

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All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

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