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Network Security Engineer

Select Minds LLC

Dallas, TX

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JOB DETAILS
SKILLS
Access Control, Administrative Skills, Analysis Skills, Authentication, Automation, Bash Scripting, CCNP - Cisco Certified Network Professional, Change Management, Cisco Network Systems, Computer Security, Cryptography, DMZ, Enterprise Protection, Firewall Administration, Firewalls, IP (Internet Protocol) Routing, IPsec (IP Security), Identify Issues, Linux Administration, Linux Operating System, Maintain Compliance, NAT (Network Address Translation), Nessus, Network Routing, Network Security, Network Support, Network Switching, Performance Tuning/Optimization, Policy Implementation, Production Systems, Python Programming/Scripting Language, Remote Access, Reporting Skills, Risk Management, SSL-TLS (Secure Socket Layer - Transport Layer Security), Scripting (Scripting Languages), Security Compliance, Security Infrastructure, Switching Architecture, Systems Administration/Management, TCP/IP (Transmission Control Protocol/Internet Protocol), Team Player, Testing, U.S. National Institute of Standards and Technology (NIST), VLAN (Virtual Local Area Network), VMWare, VPN (Virtual Private Network), Vulnerability Scanners
LOCATION
Dallas, TX
POSTED
30+ days ago
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


About the Company

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Select Minds LLC

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