Senior Network Engineer - Hybrid, Global Network & Security

Liberty Personnel Services, Inc.; Philadelphia (Philadelphia County); Hybrid; USD 120,000 - 160,000; Full time

Job summary

Liberty Personnel Services, Inc. seeks a senior Network Engineer for a hybrid role in Philadelphia.

The candidate will design, implement, monitor, and troubleshoot enterprise networks across a global organization, owning routing, switching, firewall, NAC, and cloud networking with AWS/Azure/GCP integration. The role requires 7+ years of experience, strong multi-vendor expertise, and excellent communication.

Qualifications

• Senior-level, hands-on network engineering role with 7+ years of enterprise networking experience.
• Owns routing, switching, firewall, NAC, load balancing, WAN, and hybrid cloud networking environments.
• Leads complex network implementations, upgrades, migrations, and infrastructure projects end-to-end.
• Provides Tier 3 troubleshooting, root-cause analysis, and escalation for critical network/security issues.

Responsibilities

• Designs and supports highly available, multi-site network environments using BGP, OSPF, and EIGRP.
• Manages enterprise security platforms including Cisco ASA/Firepower, Fortinet FortiGate, Cisco ISE, and F5 BIG-IP.
• Integrates on-premises infrastructure with AWS, Azure, and/or GCP cloud environments.
• Works with stakeholders and clients to resolve connectivity issues and communicate technical information clearly.
• Manages multiple concurrent projects while maintaining network reliability and service quality.
• Mentors junior team members and contributes to network standards and documentation.

Skills

Enterprise network engineering

Network troubleshooting

Multi-vendor networking

Routing protocols (BGP, OSPF, EIGRP)

Cloud networking integration

Communication skills

Tools

Cisco ASA/Firepower

Fortinet FortiGate

Cisco ISE

F5 BIG-IP

Palo Alto Networks

AWS

Azure

GCP

Job description

Liberty Personnel Services, Inc. seeks a senior Network Engineer for a hybrid role in Philadelphia.

The candidate will design, implement, monitor, and troubleshoot enterprise networks across a global organization, owning routing, switching, firewall, NAC, and cloud networking with AWS/Azure/GCP integration. The role requires 7+ years of experience, strong multi-vendor expertise, and excellent communication.