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Principal Security Engineer Incident Response

F5 Networks


Job Location:

Seattle, WA - USA

Yearly Salary: USD 182200 - 273200
Posted: 21 August 2026 (30+ days ago)
Application Deadline: 5 December 2026
Vacancies: 1 Vacancy

Job Summary

At F5 we strive to bring a better digital world to life. Our teams empower organizations across the globe to create secure and run applications that enhance how we experience our evolving digital world. We are passionate about cybersecurity from protecting consumers from fraud to enabling companies to focus on innovation.

Everything we do centers around people. That means we obsess over how to make the lives of our customers and their customers better. And it means we prioritize a diverse F5 community where each individual can thrive.

Principal Security Engineer Incident Response & Crisis Management
Organization:F5 Office of the CISO Application Delivery Security and AI Resilience
Eligibility:U.S. Citizenship Required(FedRAMP Authorization & Compliance)
Position Summary
We are seeking a Principal Security Engineer / Incident Response Leadto serve as the Incident Commander and strategic program lead within the Office of the this senior role you will orchestrate enterprise-scale response efforts drive cyber crisis management and elevate incident response maturity across F5s corporate infrastructure hybrid multicloud environments core product lines (BIG-IP NGINX Distributed Cloud WAAP) and emerging AI-enabled services.
You will act as the primary escalation point during high-impact security events translating complex forensic investigations into clear executive communications and driving cross-functional alignment across Engineering SRE Legal Communications and Executive Leadership.
Key Responsibilities
Incident Command & Cyber Crisis Leadership
  • Serve as the Incident Commanderfor enterprise-wide high-severity cyber and product security incidents from detection through post-incident review.
  • Define and lead response workstreams coordinate cross-functional teams and maintain executive visibility throughout crisis resolution.
  • On-Call Availability:Participate in and lead the rotating 24/7 on-call escalation rotationfor major security incidents.
IR Program Strategy & AI Security Readiness
  • Own and evolve F5s global Incident Response roadmap playbooks severity matrix governance standards and executive metrics.
  • Architect incident response frameworks for AI-enabled applications LLMs AI gateways APIs and model runtime data paths.
  • Drive AI-assisted security operations automated triage and response orchestration to eliminate manual overhead.
Executive Stakeholder & Regulatory Engagement
  • Author high-impact technical summaries root-cause analyses (RCAs) customer notifications and board-level briefing materials.
  • Represent the Incident Response program in compliance audits regulatory reviews and key customer escalations.
Operational Resilience Metrics & Mentorship
  • Define and track key resilience metrics (MTTD MTTC MTTR blast-radius reduction) and conduct high-fidelity tabletop simulations.
  • Mentor security engineers and incident responders establishing technical standards investigation playbooks and operational best practices.
Qualifications & Requirements
Citizenship & Compliance (Mandatory)
  • Must be a U.S. Citizen(required to support F5s FedRAMP authorization federal compliance mandates and government-regulated environments).
Experience & Availability
  • 10 yearsof progressive cybersecurity experience with deep expertise in Incident Command SOC leadership Threat Hunting Product Security or Digital Forensics in large-scale SaaS/cloud environments.
  • Willingness and availability to participate in a rotating 24/7 on-call escalation schedule.
Technical Mastery
  • Advanced understanding of application delivery architectures load balancing reverse proxies WAF/WAAP API gateways DDoS mitigation and Kubernetes ingress security.
  • Proven expertise investigating complex telemetry across AWS/Azure/GCP SIEMs EDR platforms (e.g. CrowdStrike) identity providers and network/edge devices.
  • Working knowledge of modern adversary tradecraft (MITRE ATT&CK) API attack vectors and emerging AI/LLM threat landscapes.
Leadership & Frameworks
  • Demonstrated ability to command high-stress situations and influence senior engineering and executive stakeholders without direct authority.
  • Comprehensive familiarity with industry frameworks: FedRAMP NIST SP 800-61 / 800-53 ISO 27001 SOC 2 and PCI-DSS.
Success Measures (First 1218 Months)
  • Mature and standardize global incident command playbooks across hybrid cloud and AI workloads.
  • Lead high-severity crisis investigations to swift containment while maintaining stakeholder trust and SLA adherence.
  • Drive measurable improvements in MTTD/MTTR across enterprise and product environments.
  • Ensure IR processes fully satisfy FedRAMP continuous monitoring and compliance requirements.

The Job Description is intended to be a general representation of the responsibilities and requirements of the job. However the description may not be all-inclusive and responsibilities and requirements are subject to change.

The annual base pay for this position is: $182200.00 - $273200.00

F5 maintains broad salary ranges for its roles in order to account for variations in knowledge skills experience geographic locations and market conditions as well as to reflect F5s differing products industries and lines of business. The pay range referenced is as of the time of the job posting and is subject to change.

You may also be offered incentive compensation bonus restricted stock units and benefits. More details about F5s benefits can be found at the following link: F5 reserves the right to change or terminate any benefit plan without notice.

Please note that F5 only contacts candidates through F5 email address (ending with @) or auto email notification from Workday (ending with or @).

Equal Employment Opportunity

It is the policy of F5 to provide equal employment opportunities to all employees and employment applicants without regard to unlawful considerations of race religion color national origin sex sexual orientation gender identity or expression age sensory physical or mental disability marital status veteran or military status genetic information or any other classification protected by applicable local state or federal laws. This policy applies to all aspects of employment including but not limited to hiring job assignment compensation promotion benefits training discipline and termination. F5 offers a variety of reasonable accommodations for candidates. Requesting an accommodation is completely voluntary. F5 will assess the need for accommodations in the application process separately from those that may be needed to perform the job. Request by contacting .


Required Experience:

Staff IC


About Company

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F5 application services ensure that applications are always secure and perform the way they should—in any environment and on any device.

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