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Sr Security EngineerF5 · Dublin, Dublin 1, Ireland
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F5

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Sr Security Engineer

🗓️ Posted 2026-09-16 Dublin, Dublin 1, Ireland Full-time Hybrid ICT
💰 Salary Not shared 📊 Market NA

About the Company

We deliver and secure every app. F5, Inc. (NASDAQ: FFIV) is the global leader that delivers and secures every app. Backed by three decades of expertise, F5 has built the industry's premier platform-F5 Application Delivery and Security Platform (ADSP) -to deliver and secure every app, every API, anywhere: on-premises, in the cloud, at the edge, and across hybrid, multicloud environments. F5 is committed to innovating and partnering with the world's largest and most advanced organizations to deliver fast, available, and secure digital experiences. Together, we help each other thrive and bring a better digital world to life. Information Technology & Services Specialties: Application Delivery, Web Acceleration, Security, Load-balancing, WAN Optimization, High Availability, SSL VPN, Network Traffic Management, Network Hardware, Cybersecurity, DDoS Protection, Cloud Computing, Application Availability, WAF, Application Security, Identity & Access Management

Responsibilities

  • ● 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.
  • ● Primary Responsibilities
  • ● Identify organizational risks to confidentiality, integrity, and availability, and determine appropriate mitigations.
  • ● Leverage native Azure, GCP, and AWS cloud services to automate and improve existing security and control activities.
  • ● Develop or implement open-source/third-party tools to assist in detection, prevention and analysis of security threats
  • ● Perform technical security assessments against F5aaS product and enterprise cloud hosted, virtual, and on-premise systems including static and dynamic analysis, and threat modeling.
  • ● Review and test changes to services, applications, and networks for potential security impacts.
  • ● Manage penetration and segmentation testing of F5 applications and networks.
  • ● Review changes to and ongoing operations of enterpise environments and supporting systems for security and compliance impacts.
  • ● Assist in detection and response efforts as a product line subject matter expert.
  • ● Propose new controls to Security Architecture and GRC.
  • ● Build and implement new security controls, processes and tools.
  • ● Implement zero-trust and IAM security patterns with cloud agnostic tooling
  • ● Collaborate with Architecture, Site Reliability Engineering and Operations teams to develop and implement technical solutions and security standards.
  • ● Configure industry standard security testing/scanning tools (network scanning, code scanning, posture management).
  • ● Advise enterprise stakeholders on security best practices and secure design principles.
  • ● Implement, design, develop, administer, and manage enterprise security tooling.
  • ● Knowledge, Skills and Abilities