Network Security Engineer

Select Minds LLC

$124K — $166K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 6+ years of experience in network security engineering
  • Strong knowledge of TCP/IP, routing, switching, and firewall architecture
  • Hands-on experience with enterprise firewall platforms
  • Experience with VPN configuration and troubleshooting
  • Strong Linux administration skills
  • Experience with vulnerability management and remediation processes

Responsibilities

  • Configure, deploy, and manage enterprise firewalls
  • Design and configure IPSec and SSL VPN solutions
  • Design VLANs and security zones that align with organizational policies
  • Support implementation of zero-trust security principles
  • Perform vulnerability scans using tools like Tenable or Qualys
  • Administer and harden Linux-based systems
  • Monitor logs and troubleshoot system-level issues

Benefits

  • Competitive salary
  • Opportunity for advancement
Full Job Description
Benefits:
  • Competitive salary
  • Opportunity for advancement


Network Security Engineer

Location: Colorado (Onsite)

Employment Type: Full-Time

We are hiring a hands-on Network Security Engineer to support and strengthen enterprise security infrastructure. This role requires deep experience in Firewall Management, VPN configuration, Network Segmentation, Zero-Trust Implementation, and Linux system administration.

This position is fully onsite in Colorado. Candidates must be comfortable working directly with infrastructure, networking, and security teams in a production environment.

Key Responsibilities

Firewall Configuration & Optimization:
  • Configure, deploy, and manage enterprise firewalls such as Palo Alto Networks, Fortinet, or Cisco Systems
  • Perform rule set analysis, cleanup, and performance tuning
  • Implement NAT policies, access controls, and application-layer inspection
  • Support firewall upgrades and change management processes

VPN & Secure Remote Access:
  • Design and configure IPSec and SSL VPN solutions
  • Support secure remote workforce connectivity
  • Integrate multi-factor authentication into VPN environments
  • Troubleshoot connectivity and encryption issues


Network Segmentation & Security Architecture:
  • Design VLANs and security zones aligned with organizational policies
  • Implement DMZ architectures
  • Enforce least-privilege access models
  • Control east-west traffic to reduce lateral movement risks

Zero-Trust & Micro-Segmentation
  • Support implementation of zero-trust security principles
  • Configure micro-segmentation solutions such as VMware NSX or similar platforms
  • Enforce identity-based and policy-driven access controls

Security Compliance & Vulnerability Management
  • Perform vulnerability scans using tools such as Tenable (Nessus) or Qualys
  • Analyze CVEs and coordinate remediation efforts
  • Support compliance initiatives aligned with NIST, CIS, or similar frameworks
  • Track remediation status and provide reporting to stakeholders

Linux System Administration & Automation
  • Administer and harden Linux-based systems
  • Develop automation scripts using Bash or Python
  • Monitor logs and troubleshoot system-level issues
  • Support security appliances running on Linux platforms

Required Qualifications
  • 6+ years of experience in network security engineering
  • Strong knowledge of TCP/IP, routing, switching, and firewall architecture
  • Hands-on experience with enterprise firewall platforms
  • Experience with VPN configuration and troubleshooting
  • Strong Linux administration skills
  • Experience with vulnerability management and remediation processes

Preferred Qualifications
  • Experience in zero-trust architecture implementations
  • Exposure to micro-segmentation technologies
  • Certifications such as CCNP Security, PCNSE, NSE, or similar
  • Experience in regulated or enterprise environments

Work Environment
  • Fully onsite role in Colorado
  • Collaborative team environment supporting enterprise infrastructure
  • Direct involvement in production security operations


Compensation: $60.00 - $80.00 per hour

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