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Senior Network Security Engineer

AscensionSaint Louis🇺🇸United StatesPosted Oct 8, 2026

Quick overview

SeniorityMid Senior
Work modeRemote
LocationSaint Louis, United States
Posted2 weeks ago
Continuous ImprovementNetwork Administration

Job description

  • Location: Remote
  • Department: Core Tech Network
  • Schedule: Days | Full-Time

#LI-Remote

  • Drive continuous improvement of the security environment through policy optimization, segmentation initiatives, automation, and operational enhancements across Palo Alto, Fortinet, and NAC platforms.
  • Serve as the senior technical escalation point for complex security, firewall, and network access control issues, leading root-cause analysis, incident response, and problem resolution efforts.
  • Own and optimize the organization's core network security platforms, ensuring the availability, performance, and protection of critical systems across a large-scale enterprise environment.
  • Deep technical proficiency in Palo Alto firewalls, Fortinet platforms, and Cisco ISE/Aruba ClearPass, covering firewall operations, policy segmentation, 802.1X/RADIUS/TACACS+, and IPSec/SSL VPNs.

Education:

  • High School diploma equivalency with 2 years of cumulative experience OR Associate's degree/Bachelor's degree with 1 year of experience OR 5 years of applicable cumulative job specific experience required. 2 years of leadership or management experience preferred.

Additional Preferences:

  • 8–10+ years of enterprise network/security engineering experience, with proven expertise troubleshooting complex, multi-layered issues under pressure in large-scale environments.
  • Preferred certifications: Palo Alto PCNSE, Fortinet NSE (4 or higher), CISSP, and security-focused credentials from Cisco or Aruba.

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