Onsite Firewall & Network Security Engineer

Konnect IT Group, Inc.; Chicago (IL); On-site; USD 130,000 - 150,000; Full time

Job summary

Konnect IT Group, Inc. is seeking an experienced Senior Network Engineer for hands-on design, deployment, and maintenance of enterprise security and networking in Chicago. The role is onsite at O’Hare/Midway data-center locations and requires strong expertise with Palo Alto, Fortinet, Cisco, routing, VPN, and DNS.

You will document changes in ServiceNow and coordinate with vendors and clients. The ideal candidate has 5+ years in network engineering or security operations, plus certifications or

Qualifications

• 5+ years of enterprise network engineering, firewall administration, or security operations.
• Hands‑on experience with Palo Alto, Fortinet, Cisco and related platforms.
• Strong knowledge of firewall rules, ACLs, NAT/PAT, segmentation, logging, and security policy enforcement.
• Experience with OSPF, BGP, static routing, routing protocols, and IPsec VPN technologies.
• Experience using ServiceNow or similar ticketing/change-management systems.
• Excellent communication and cross‑functional collaboration skills.

Responsibilities

• Configure, administer, maintain, and troubleshoot Palo Alto, Fortinet, Cisco, and related platforms.
• Manage firewall policies, VPN connectivity, routing, switching, and LAN security controls.
• Troubleshoot enterprise network and firewall issues using logs, CLI, and monitoring tools.
• Configure routing protocols and related enterprise network services.
• Support IPsec VPN, IOS upgrades, password recovery, and maintenance.
• Support DNS architecture and Infoblox where applicable.
• Monitor security environments with Panorama, FortiManager, Cisco DNA Center, SolarWinds, etc.
• Maintain incident, service request, and change-management documentation in ServiceNow.
• Develop implementation, test, contingency, and rollback plans; network diagrams and procedures.
• Coordinate with project managers, vendors, client stakeholders, and internal teams.
• Contribute to change-management, documentation, security, and operational procedures.
• Perform other network and security-related activities as assigned.

Skills

Enterprise network engineering

Firewall administration

TCP/IP & subnetting

OSPF/BGP routing

Incident management

Client/vendor coordination

Education

Bachelor’s or higher in IT/CS/Cybersecurity

Tools

Panorama

FortiManager

Cisco DNA Center

SolarWinds

Infoblox

Job description

Konnect IT Group, Inc. is seeking an experienced Senior Network Engineer for hands-on design, deployment, and maintenance of enterprise security and networking in Chicago. The role is onsite at O’Hare/Midway data-center locations and requires strong expertise with Palo Alto, Fortinet, Cisco, routing, VPN, and DNS.

You will document changes in ServiceNow and coordinate with vendors and clients. The ideal candidate has 5+ years in network engineering or security operations, plus certifications or