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Senior Network Administrator

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Robert Half

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Location:
United States , Portland

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Category:
IT - Administration

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Contract Type:
Not provided

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Salary:

Not provided
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Job Description:

We are looking for an experienced Senior Network Administrator to support and enhance the network environment for an architecture-focused organization in Portland, Oregon. This Long-term Contract position is ideal for a detail-oriented candidate who can maintain reliable connectivity, strengthen security, and improve overall infrastructure performance across enterprise systems. The role requires strong technical depth in routing, firewall administration, cloud-connected environments, and day-to-day network operations.

Job Responsibility:

  • Oversee the stability, performance, and security of LAN and WAN infrastructure across the organization
  • Configure, maintain, and troubleshoot Cisco routers and broader Cisco networking components to ensure dependable connectivity
  • Administer Fortinet firewall solutions, including policy updates, access controls, and threat protection measures
  • Support SD-WAN operations by monitoring links, optimizing traffic flow, and resolving connectivity issues between sites and services
  • Manage Active Directory and related system administration tasks that support network access and user connectivity
  • Collaborate with internal teams to address network incidents, implement improvements, and reduce service disruptions
  • Assist with Azure-connected networking components and help maintain secure integration between cloud and on-premises environments
  • Document network configurations, operational procedures, and technical changes to support ongoing maintenance and compliance

Requirements:

  • Demonstrated experience in network administration within complex enterprise environments
  • Strong hands-on expertise with Cisco routers, Cisco networking, and firewall technologies
  • Proven ability to manage and support Fortinet firewalls in a production setting
  • Working knowledge of LAN, WAN, and SD-WAN design, support, and troubleshooting
  • Experience with Microsoft Azure networking concepts and hybrid infrastructure connectivity
  • Background in system administration, including support for Active Directory environments
  • Ability to diagnose technical issues efficiently and communicate solutions clearly with stakeholders
What we offer:
  • medical
  • vision
  • dental
  • life and disability insurance
  • 401(k) plan

Additional Information:

Job Posted:
May 11, 2026

Work Type:
On-site work
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