Network Security Engineer

VC5 Consulting; Mount Prospect (IL); On-site; USD 90,000 - 120,000; Full time

Job summary

A leading consulting firm is seeking a Senior Network Security Engineer to spearhead a major network infrastructure standardization and security initiative. This is a unique opportunity for an experienced engineer to redefine network strategy across multiple sites, manage day-to-day firewall operations, and oversee the migration to Cisco devices. The ideal candidate will have hands-on experience with Palo Alto firewalls and a strong understanding of hybrid network environments. This role is crucial for designing and securing the network infrastructure for a growing company.

Qualifications

• Proven hands-on experience with Palo Alto firewall administration and maintenance.
• Expertise in managing a hybrid network environment with strong cloud service integration.
• Demonstrable competency in core networking concepts, including VLANs and IP subnetting.
• Familiarity with network device patching and security hardening.
• Ability to function as a highly independent, senior resource.

Responsibilities

• Lead a long-term project to standardize network architecture across locations.
• Manage day-to-day firewall maintenance and review security logs.
• Oversee migration and operation of Cisco network devices.

Skills

Palo Alto firewall administration

Hybrid network environment management

Core networking concepts

Network device patching

SIEM tools for security monitoring

Tools

Cisco network devices

SIEM solutions

Job description

Overview

Seeking a Senior Network Security Engineer to spearhead a major network infrastructure standardization and security initiative. This is a unique opportunity for a highly autonomous and experienced engineer to own and redefine the network strategy for a multi-site enterprise. The ideal candidate will leverage their deep technical expertise in firewalls, hybrid cloud networking, and security to drive significant, long-term operational improvements.

Responsibilities

• Network Standardization: Lead a long-term project to evaluate, clean up, and standardize all network architecture, including IP subnetting and VLAN configurations, across multiple physical locations.

• Security and Monitoring: Manage day-to-day firewall maintenance, review security logs, and implement a Security Information and Event Management (SIEM) solution to visualize and secure internal (east/west) network traffic.

• Infrastructure Management: Oversee the migration to and maintenance of Cisco network devices and manage the operation of the hybrid cloud environment, including connectivity like ExpressRoutes to the cloud platform.

Required Qualifications

• Proven hands-on experience with Palo Alto firewall administration and maintenance.

• Expertise in managing a hybrid network environment with strong cloud service (e.g., Azure/EntraID) integration.

• Demonstrable competency in core networking concepts, including VLANs and IP subnetting.

• Familiarity with network device patching, security hardening, and leveraging SIEM tools for security monitoring.

• Demonstrated ability to function as a highly independent, senior resource capable of self-managing large-scale, strategic projects.

This is a pivotal role for a security-minded Network Engineer to design, secure, and fully own the network infrastructure for a growing company.