Network Engineer III

Network Engineer III

Job Type: Full-Time Reports To: Vice President of Infrastructure Delivery

About Athena Information Technology

Athena Information Technology supports the critical infrastructure that connects corporate offices, data centers, and healthcare facilities across the organization. We are seeking an experienced Network Engineer III who thrives in complex enterprise environments and can independently troubleshoot, resolve, and modernize networking infrastructure that supports high-availability healthcare operations.

This is a hands-on senior engineering role for someone with deep expertise in Cisco networking, Palo Alto security platforms, Aruba wireless technologies, SD-WAN connectivity, and carrier-network management.

What You'll Do

As a Network Engineer III, you will design, support, troubleshoot, and optimize enterprise network infrastructure across multiple locations.

Key Responsibilities

• Design, configure, maintain, and troubleshoot enterprise LAN, WAN, wireless, firewall, VPN, and SD-WAN environments.
• Diagnose and resolve complex network performance and connectivity issues using packet captures, routing analysis, system logs, and monitoring platforms.
• Administer and support:
• Cisco routing and switching infrastructure
• Palo Alto firewalls and GlobalProtect VPN
• Aruba wireless solutions
• Aruba ClearPass
• Palo Alto Prisma SD-WAN ION devices
• Partner with carriers and internal telecommunications teams to coordinate:
• Circuit installations
• Upgrades and migrations
• Outage response
• Service restoration
• Escalation management
• Validate performance, failover capabilities, and redundancy for new network services.
• Utilize Cortex XDR telemetry to assist with incident investigations and coordinate response activities with Infrastructure and Information Security teams.
• Improve monitoring, alerting, reporting, and capacity planning utilizing:
• Zabbix
• Grafana
• Aruba AirWave
• SolarWinds
• Maintain network documentation, configuration backups, and operational standards.
• Mentor junior engineers and contribute to technical knowledge sharing.
• Use approved AI tools, scripting, and APIs to automate repetitive tasks and accelerate troubleshooting efforts.
• Participate in a rotating 24/7 on-call schedule and occasional after-hours maintenance activities.

Required Qualifications

Experience

• 9+ years of progressively responsible enterprise networking experience.
• Extensive hands-on experience supporting complex production network environments.
• Proven ability to work independently and manage multiple priorities in a fast-paced operational setting.

Technical Expertise

Cisco Networking

• VLANs
• Trunking
• Spanning Tree Protocol
• EtherChannel
• Access Control Lists (ACLs)
• Quality of Service (QoS)
• OSPF
• BGP
• Advanced CLI troubleshooting

Palo Alto Networks

• Security policies
• NAT
• App-ID
• VPN technologies
• Log analysis
• Traffic flow troubleshooting

Aruba Technologies

• Wireless architecture and management
• RF optimization
• Roaming and client-connectivity troubleshooting
• Aruba AirWave
• Aruba ClearPass

ClearPass Expertise

• RADIUS
• 802.1X authentication
• EAP-TLS
• Digital certificates
• Enforcement policies
• Authentication troubleshooting

SD-WAN

• Palo Alto Prisma SD-WAN
• ION appliance deployment and support
• WAN path optimization
• Application-based routing
• Overlay networks
• Circuit failover

Carrier and Telecom Experience

• Dedicated Internet Access (DIA)
• Ethernet services
• Broadband services
• Circuit provisioning
• Demarcation troubleshooting
• Technical escalations
• Service restoration testing

Networking Fundamentals

Strong understanding of:

• TCP/IP
• DNS
• DHCP
• Routing and switching concepts
• Certificates and PKI
• Latency, jitter, and packet loss analysis
• MTU optimization
• Packet capture and protocol analysis

AI and Automation Experience

We are looking for engineers who actively leverage technology to improve operational effectiveness.

Qualified candidates should be able to demonstrate practical experience using AI and automation tools to:

• Analyze sanitized logs
• Generate troubleshooting hypotheses
• Review network configurations
• Create scripts
• Improve documentation
• Streamline repeatable workflows

Candidates should be prepared to discuss:

• Specific use cases
• Validation methods used to verify results
• Time savings achieved
• Operational improvements delivered

Required Technical Skills

• PowerShell
• Python or equivalent scripting language
• REST APIs
• Responsible handling of credentials, healthcare information, and sensitive network data

Preferred Qualifications

• Bachelor's degree in Information Technology, Computer Science, Engineering, or a related field; or equivalent enterprise experience.
• CCNP-level routing and switching knowledge.
• Cisco certifications preferred.
• Palo Alto Networks certifications preferred.
• Aruba certifications preferred.
• Experience supporting healthcare or other highly available environments.

Additional Preferred Skills

• Cisco Nexus
• Cisco Meraki
• Voice-network troubleshooting
• Microsoft certificate services
• Microsoft identity integration

Work Environment & Physical Requirements

• Non-supervisory position reporting to the Vice President of Infrastructure Delivery.
• Participation in a rotating 24/7 on-call schedule.
• Occasional after-hours maintenance windows.
• Travel as required.
• Ability to install, move, and rack networking equipment weighing up to 25 pounds, with reasonable accommodation as applicable.

Why Join Athena Information Technology?

• Work with modern enterprise networking and security technologies.
• Support mission-critical healthcare environments.
• Collaborate with experienced infrastructure, telecom, and security professionals.
• Opportunity to leverage automation, AI, and next-generation networking solutions.
• Make a direct impact on the reliability and performance of systems that support patient care.