Sr. Network Admin

Job Title:

Sr. Network Admin Type:
Direct Hire

Work Location:

Onsite position located in Houston, TX with 25% travel

As a Senior Network Administrator, you will set the strategic direction for the network and establish the standards that keep it stable and secure. You will lead network modernization, administration, and fault resolution across physical and cloud environments, provide technical support to employees, and partner with other IT teams and vendors to resolve network-related issues. You will also partner closely with the business as it expands, ensuring the network scales securely to support new sites, acquisitions, and operational needs while maintaining security posture.

• Establish network and infrastructure standards across the organization.
• Design, configure, and maintain enterprise routing and switching infrastructure across corporate and site locations, including VLAN segmentation, spanning tree, dynamic routing (OSPF/BGP), and QoS policies.
• Administer SD‑WAN/SASE and network security environment (Cato Networks), including firewall policy management, secure connectivity between the corporate network and field/site locations, and site failover.
• Support and maintain Starlink satellite connectivity network for remote and field site locations, including provisioning, troubleshooting, and integration with the broader corporate WAN/SD‑WAN environment.
• Install, configure, and maintain physical and virtual server and network infrastructure platforms.
• Administer and optimize Microsoft Azure network and infrastructure components, including virtual networks, network security groups, VPN Gateway/Express Route connectivity, and hybrid identity integration between on‑premises Active Directory and Microsoft EntraID.
• Respond to and resolve network-related incidents in a timely manner, address alerts and escalations, and work with IT leadership, other IT teams, and vendors to produce strategic solutions to recurring problems.
• Maintain and periodically audit privileged accounts and access permissions.
• Assist in the configuration and troubleshooting of IP-based peripherals such as printers, scanners, and mobile devices.
• Collaborate with other IT team members to identify and resolve complex issues.
• Work closely with the IT Security team to implement and maintain network security measures, including firewalls, intrusion detection/prevention systems, and access control policies.
• Monitor and analyze network traffic for potential security threats and vulnerabilities and implement appropriate mitigation strategies to minimize risk.
• Document current technical procedures and create knowledge base articles for the support team when needed.
• Maintain inventory of network hardware, software, and licensed assets.
• Maintain network topology diagrams, device alerting structure, and network management tools to ensure all devices’ location and status are known 24x7 and detected issues are actioned.
• Train users to successfully operate new systems and equipment as needed.
• Conduct network vulnerability scans and privileged access rights reviews at specified intervals (weekly, monthly, quarterly).
• Establish and maintain network device patching cadence.
• Maintain network backups and ensure periodic testing as part of the DR plan.
• Participate in the 24/7 on‑call rotation and act as primary contact point for network-related issues.

• Business unit operations teams
• Information Technology team
• Business partner functions (HR, Procurement, Finance, Operations)
• External stakeholders – Third party vendors and service providers

• Service-oriented mindset
• Strong technical acumen and solution oriented
• Outstanding communication, organizational, and time management skills
• Strong teamwork and interpersonal skills
• Technical and end‑user documentation writing
• Incident, change and problem management competency
• Great analytical skills
• Passion for continuous improvement and optimization across all areas of responsibility

• Proven/equivalent multi-year experience in related fields and activities.
• 8+ years of experience as a Network Administrator in a multisite…