Network Security Engineer

Insight Global; Greenwood Village (CO); On-site; USD 100,000 - 130,000; Full time

Job summary

Insight Global is seeking a Network Security Engineer in Greenwood Village, Colorado. The ideal candidate will have over 10 years of experience in network/security engineering and will be responsible for designing and maintaining secure network infrastructure.

Strong experience with Cisco networking and Palo Alto firewalls is essential. Responsibilities include monitoring network performance, troubleshooting issues, and conducting vulnerability assessments. The role requires collaboration with various teams and adherence to enterprise security standards.

Qualifications

• 10+ years of experience in network/security engineering.
• Experience in enterprise or data center environments.
• Exposure to network segmentation, Zero Trust, or cloud security (AWS/Azure).

Responsibilities

• Design, implement, and maintain network security infrastructure.
• Configure and manage Palo Alto firewalls.
• Administer and support Cisco networking equipment.
• Monitor network performance and security posture.
• Conduct vulnerability assessments and audits.

Skills

Network/security engineering

Cisco networking (routing & switching)

Routing protocols (BGP, OSPF, EIGRP)

Firewall technologies, IDS/IPS, VPN (IPSec/SSL)

Troubleshooting complex network and security issues

Familiarity with security frameworks and best practices

Education

Relevant certifications such as CISSP or Security+

Tools

Palo Alto firewalls

Load balancers (F5)

Proxies or SIEM tools

Job description

• 10+ years of experience in network/security engineering
• Hands-on experience with:
• Cisco networking (routing & switching)
• Strong understanding of:
• Routing protocols (BGP, OSPF, EIGRP)
• Firewall technologies, IDS/IPS, VPN (IPSec/SSL)
• Experience troubleshooting complex network and security issues
• Familiarity with security frameworks and best practices

Preferred Qualifications

• Experience in enterprise or data center environments
• Exposure to network segmentation, Zero Trust, or cloud security (AWS/Azure)
• Experience with load balancers (F5), proxies, or SIEM tools
• Relevant certifications such as:
• CISSP or Security+

Position Overview

We are seeking a Network Security Engineer responsible for designing, implementing, and maintaining secure network infrastructure across enterprise environments. The ideal candidate will have strong experience with Cisco networking (including Nexus), Palo Alto firewalls, and enterprise security best practices.

Key Responsibilities

• Design, implement, and maintain network security infrastructure, including firewalls, routers, switches, and VPN solutions
• Configure and manage Palo Alto firewalls (policies, NAT, VPNs, GlobalProtect, security profiles)
• Administer and support Cisco networking equipment, including routers, switches, and Nexus platforms
• Monitor network performance and security posture; troubleshoot and resolve connectivity and security issues
• Develop, implement, and enforce security policies, standards, and procedures across the network
• Conduct vulnerability assessments, audits, and remediation of security risks
• Manage and support VPN, remote access, and DMZ environments
• Collaborate with infrastructure, cloud, and security teams to support enterprise initiatives
• Maintain documentation of network architecture, configurations, and procedures
• Provide support during outages, incidents, and on-call rotations as needed