Senior Network Security Engineer - Remote, Firewall & NAC

Ascension; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Health coverage

403(b) match

PTO & holidays

Tuition reimbursement

EAP

Parental leave

Pet insurance

Transportation savings

Job summary

Ascension is seeking a senior network security engineer to drive security improvements and own core platforms in a large-scale environment. This remote role falls within Core Tech Network, with a focus on policy optimization, segmentation, and automation.

You will serve as the escalation point for complex security and NAC issues, lead root-cause analysis, and coordinate incident response across Palo Alto, Fortinet, Cisco ISE, and Aruba ClearPass.

Qualifications

• 8–10+ years of enterprise network/security engineering experience.
• Proven expertise troubleshooting complex, multi-layered issues in large-scale environments.
• Experience with Palo Alto, Fortinet, Cisco ISE/Aruba ClearPass.
• Preferred certifications: PCNSE, Fortinet NSE (4+), CISSP, and vendor credentials.

Responsibilities

• Drive continuous improvement of security environment through policy optimization, segmentation, automation, and ops enhancements.
• Serve as senior escalation point for complex security, firewall, and NAC issues; lead root-cause analysis and incident response.
• Own and optimize core network security platforms to ensure availability, performance, and protection of critical systems.
• Demonstrate deep proficiency with Palo Alto, Fortinet, and Cisco ISE/Aruba ClearPass including 802.1X and VPNs.

Skills

Security engineering

Network security

Incident response

Policy optimization

Education

High School diploma equivalency

Associate's degree

Bachelor's degree

5 years of applicable cumulative experience

2 years of leadership/management experience

Tools

Palo Alto firewalls

Fortinet platforms

Cisco ISE

Aruba ClearPass

802.1X/RADIUS/TACACS+

IPSec/SSL VPNs

Job description

Ascension is seeking a senior network security engineer to drive security improvements and own core platforms in a large-scale environment. This remote role falls within Core Tech Network, with a focus on policy optimization, segmentation, and automation.

You will serve as the escalation point for complex security and NAC issues, lead root-cause analysis, and coordinate incident response across Palo Alto, Fortinet, Cisco ISE, and Aruba ClearPass.