Principal Security Engineer - Reliability

Why This Role Matters In this role, you will help shape the strategy for critical network security products at enterprise scale. You will influence how security platforms are engineered, governed, automated, monitored, and continuously improved while partnering across cybersecurity, infrastructure, cloud, application, architecture, risk, compliance, and business teams. This is an opportunity to modernize security product delivery, reduce operational and cyber risk, and improve the stability and effectiveness of platforms that protect critical business services.

Details Employment Type: Full time Role Type: Individual contributor; this is not a people-manager role. Work Model: Hybrid work model with three days per week in the office. Eligible Locations: Dallas, TX metro; Charlotte, NC metro; or Chandler, AZ metro. Escalation Expectations: Provides senior technical escalation for critical incidents and high-risk changes. This role is expected to support critical incident response as needed; any recurring on-call rotation will be clearly defined before offer acceptance. Travel Expectations: 5% or less. Core Technology Stack This role focuses on enterprise network security products and services, including next-generation firewalls and firewall management platforms, secure web proxy and secure internet access, network access control (NAC), identity-aware access, web application firewall (WAF), application protection, secure remote access, ZTNA, SASE, network segmentation and micro-segmentation, threat prevention, intrusion prevention, inspection, TLS/SSL inspection, encrypted traffic analysis, logging, telemetry, monitoring, observability platforms, automation, configuration management, and infrastructure-as-code tooling.

You will provide senior technical leadership, hands-on engineering guidance, and cross-functional influence across the following areas: Network Security Product Strategy: Define and drive reliability, security posture, policy governance, service health indicators, risk measures, and improvement plans for security platforms. Security Platform Engineering: Guide engineering decisions for proxy, firewall, NAC, WAF, secure access, and segmentation platforms to improve scalability, resiliency, and operational simplicity. Policy and Control Maturity: Strengthen firewall rules, proxy policies, NAC/WAF controls, segmentation models, exception handling, certification practices, and compliance-aligned controls. Incident Leadership: Lead major incident response and service restoration for security product incidents, and drive root cause analysis and prevention of repeat issues. Automation and Observability: Expand telemetry, alerting, service health reporting, policy validation, configuration management, automated testing, and self-service capabilities. Architecture Influence: Review and guide designs to improve security effectiveness, failure isolation, availability, inspection performance, and operational readiness. Cross-Functional Leadership: Partner with cybersecurity, network, cloud, infrastructure, application, architecture, risk, and compliance teams while mentoring engineers and influencing senior stakeholders.

You should demonstrate principal-level technical depth, operational judgment, and cross-functional influence, including: 7+ years of experience in network security, network engineering, or security infrastructure supporting business-critical enterprise network services. 5 plus years of expert knowledge of network security platforms including firewalls, proxy, NAC, WAF, ZTNA, segmentation, and secure access. 5 plus years experience with a strong understanding of TCP/IP, routing, switching, DNS, load balancing, TLS/SSL, and application-layer protocols. 5 plus years experience applying reliability or SRE practices to infrastructure or security platforms, including service health measurement, problem management, operational health metrics, and continuous