Sr Network Administrator

We are seeking a Senior Network Administrator to lead the design, implementation, support, and optimization of enterprise network infrastructure. This role will be responsible for maintaining a secure, highly available, and scalable network environment across multiple locations while serving as a technical escalation point for complex networking issues.

The ideal candidate will have extensive experience supporting enterprise LAN/WAN environments, firewalls, routing, switching, wireless networks, and network security technologies.

Responsibilities

• Design, implement, and maintain enterprise network infrastructure
• Configure and support routers, switches, firewalls, load balancers, and wireless solutions
• Monitor network performance, availability, and capacity planning initiatives
• Troubleshoot complex connectivity, performance, and security issues
• Manage VPN, SD-WAN, and remote access technologies
• Perform network upgrades, migrations, and infrastructure improvements
• Develop and maintain network documentation, diagrams, and procedures
• Collaborate with Security, Infrastructure, and Cloud teams to ensure network reliability and compliance
• Participate in disaster recovery planning and business continuity efforts
• Serve as a senior escalation resource and mentor junior administrators

Qualifications:

Required Qualifications

• 5+ years of experience administering enterprise network environments
• Strong experience with Cisco, Aruba, Juniper, Palo Alto, Fortinet, or similar networking technologies
• Deep understanding of:
• TCP/IP
• DNS
• DHCP
• BGP
• OSPF
• VLANs
• VPNs
• Routing and Switching
• Experience managing firewalls and network security policies
• Knowledge of network monitoring and troubleshooting tools
• Experience supporting highly available and redundant network environments
• Excellent problem-solving and communication skills

Preferred Qualifications

• Experience with cloud networking in Azure or AWS
• Exposure to SD-WAN technologies
• Experience with network automation and scripting (PowerShell, Python, Ansible)
• Industry certifications such as:
• CCNA
• CCNP
• Network+
• PCNSE
• NSE
• Aruba Certifications

Technical Environment

• Cisco Routing & Switching
• Palo Alto / Fortinet Firewalls
• SD-WAN
• Wireless Infrastructure
• Azure Networking
• AWS Networking
• Network Monitoring Tools
• DNS, DHCP, VPN
• PowerShell / Python

What Success Looks Like

• Maintaining high network availability and performance
• Reducing downtime through proactive monitoring and optimization
• Enhancing network security and compliance
• Successfully leading infrastructure upgrades and modernization efforts
• Providing expert-level support for critical networking issues

Compensation

About Us

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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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