Software Development Engineer II

RESPONSIBILITIES: · Support research into emerging cyber threats targeting web applications, APIs, AI/LLM applications, cloud workloads, Kubernetes, and enterprise infrastructure. · Analyze attacker tactics, techniques, and procedures using frameworks such as MITRE ATT&CK, MITRE ATLAS, OWASP Web Application Top 10, OWASP API Security Top 10, and OWASP LLM Top 10. · Develop and execute proof of concept exploits, attack simulations, and threat emulation scenarios under guidance from senior engineers. · Implement and maintain automated security validation frameworks, detection tools, and supporting security tools for testing and mitigation. · Evaluate F5 security products and platform capabilities against emerging threats and evolving attack techniques. · Build reusable tools, scripts, demos, and validation assets that support technical marketing engineering use cases and customer demonstrations. · Create technical content, demos, and security focused materials for internal teams and customers. · Participate in code reviews by contributing scripts, incorporating feedback, and reviewing automation and tooling from other team members. · Contribute to repeatable methodologies for security testing, threat emulation, and use case validation. Knowledge and Skills: · Good knowledge of application security, API security, cloud security, and AI/LLM security. · Good understanding of OWASP Web Application Top 10, OWASP API Security Top 10, and OWASP LLM Top 10. · Strong programming skills in Python for automation, tooling, validation, and security research. · Knowledge of threat intelligence, attack techniques, threat detection, and security validation using frameworks such as MITRE ATT&CK and MITRE ATLAS. · Good knowledge of security and networking fundamentals. · Experience building or supporting security tools, automation frameworks, validation environments, or threat simulation capabilities. · Experience with offensive security tools such as Burp Suite, Nmap, Metasploit, ffuf, sqlmap, or similar, is preferred. · Working knowledge of HTTP, DNS, TCP/IP, and L2/L3 network protocol testing. · Experience with Git Hub or other source control tools preferred. · Experience with CI/CD, Agile software development, and test automation. · Ability to support technical marketing engineering through demos, validation assets, technical tools, and customer facing technical content. · Strong organizational, analytical, troubleshooting, and problem solving skills. QUALIFICATIONS: · 3+ years of professional experience in software development, testing, security validation, or security engineering, preferably in a Linux environment. · Experience working with geographically dispersed teams preferred. · BA/BS degree in computer science, engineering, or related field, or equivalent work experience. 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. Please note that F5 only contacts candidates through F5 email address (ending with @f5.com) or auto email notification from Workday (ending with f5.com or @myworkday.com). 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 accommodations@f5.com. Hybrid: Employees within 30 commutable miles of an F5 office are required to work from the office a minimum of 30 business days per quarter. Remote: Primarily work from designated home location but can come into an F5 office to work or travel to an offsite location as needed. Together, we're building a better digital world. Founded in 1996, F5 is a global leader in application delivery and security. Our premier platform helps customers secure and deliver every app, API, and piece of infrastructure across all environments. Backed by over three decades of expertise and 553 patents, our solutions protect against threats while ensuring fast, reliable digital experiences. With over 6,400 employees, we serve more than 23,000 customers in over 170 countries. To continue this work, we need people like you—the best minds in the industry. We're committed to a unique, human-first culture that encourages authenticity, prioritizes diversity and inclusion, and fosters the growth and success of our employees.