F5 · 5 hours ago
Sr, Security Engineer
Greater Seattle Area
Full-time
Hybrid
Senior Level, Lead/Staff
$120K/yr - $180K/yr
8+ years expF5 is a company focused on creating a better digital world through innovative cybersecurity solutions. The Senior Security Engineer will lead initiatives in threat detection, incident response, and proactive threat hunting, utilizing cutting-edge security technologies to protect F5’s environments.
Consumer ElectronicsSaaSSecurityVirtualization
Responsibilities
Lead threat hunting engagement for Global Cyber Security Detections and Investigations team across enterprise and product environments
Lead and guide team members in threat hunting practices and up skilling efforts
Perform proactive threat hunting and cloud/host forensics (AWS, Azure, GCP, Linux, Windows, macOS)
Conduct technical security assessments, including static/dynamic analysis and threat modeling
Automate manual processes to reduce operational toil and improve response times
Collaborate with SRE, Architecture, and Operations teams to implement security standards and controls
Utilize security tooling (i.e., EDR, DLP, vulnerability scanners, posture management)
Advise stakeholders on secure design principles and security best practices
Maintain and improve security runbooks and documentation
Stay current on emerging threats, CVEs, and industry trends applying to hunting practices
Follow F5 information security policies and protect information assets from unauthorized access, disclosure, modification, destruction or interference
Performs other related duties as assigned
Follow the F5 behaviors
Qualification
Required
8+ years in cybersecurity, including threat hunting, incident response, and security engineering
Strong experience with SIEM (e.g., Falcon, Splunk, Sentinel), SOAR, and EDR platforms
Deep understanding of MITRE ATT&CK framework and threat actor TTPs
Apps Proficiency in scripting or utilizing automation tools (Python, PowerApps, Power Automate) for automation and tooling
Hands-on experience with cloud security (AWS, Azure, GCP) and infrastructure as code (Terraform, Ansible)
Solid grasp of UNIX/Linux systems, networking protocols, and firewall architecture
Experience with vulnerability management, penetration testing, and secure architecture design
Excellent communication skills with ability to interface across technical and non-technical stakeholders
Preferred
Certifications: GCIH, GCFR, CEH, or equivalent SANS training
Experience with ServiceNow, ADO or similar ticketing systems
Familiarity with container orchestration (Kubernetes, Docker) and CI/CD pipelines
Exposure to FedRamp, eDiscovery, and DLP casework
Strong interpersonal skills and a collaborative mindset
Ability to lead and mentor junior engineers
Ability to drive strategic long-term initiatives with cross org leaders
Ability to effectively present to our executive leadership
Benefits
Incentive compensation
Bonus
Restricted stock units
Benefits
Company
F5 is a multi-cloud application services and security company that specializes in application security, performance, and delivery.
5001-10000 employees
H1B Sponsorship
F5 has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (155)
2024 (110)
2023 (211)
2022 (194)
Funding
Current Stage
Public CompanyTotal Funding
unknownKey Investors
Elliott Management Corp.
2020-11-08Post Ipo Equity
1999-06-04IPO
1998-09-24Series Unknown
Leadership Team
François Locoh-Donou
President and CEO
Kunal Anand
Chief Technology Officer
Recent News
2025-12-24
Company data provided by crunchbase