Software Engineer III - Security - ffive

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.

Position Summary:

The Software Engineer III is responsible for researching, analyzing, and validating emerging cyber threats targeting applications, APIs, AI/LLM systems, cloud native environments, and modern enterprise infrastructure. This engineer develops proof of concept attacks, detection techniques, security validation frameworks, and security tools that help strengthen F5 Application Delivery and Security Platform (ADSP), including BIG-IP, NGINX, F5 AI Guardrails, F5 AI Gateway, and F5 Distributed Cloud solutions.

This role combines threat intelligence, offensive security research, automation, security tool development, and technical content creation to improve F5 security products and support technical marketing engineering with demos, validation assets, tools, and customer facing content. The engineer collaborates closely with Product Security, Engineering, Product Management, Security Research, Threat Intelligence, Technical Marketing Engineering, and architects to identify emerging attack trends, validate F5 protections, and create reusable technical assets.