Software Development Engineer III

Posted 3 Days Ago
Be an Early Applicant
2 Locations
In-Office
Senior level
Cloud • Information Technology • Security • Software
The Role
Design, develop, and maintain automated test frameworks and suites for WAAP across on‑prem, distributed, and cloud environments. Execute end-to-end, integration, performance, and scalability tests; validate AI/ML algorithms and OWASP detection; diagnose multi-service issues; manage defects; develop test environments and documentation; participate in code/design reviews; and mentor junior QA engineers.
Summary Generated by Built In

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.

Key Responsibilities
  • Design, develop, and maintain scalable automated test frameworks and test suites for On-Prem and Distributed Cloud WAAP solutions.
  • Drive adoption of AI-powered automation, code review, regression optimization, and test reporting.
  • Collaborate with developers, product managers, SREs, and QA engineers across global teams to define test strategies, acceptance criteria, and quality goals.
  • Validate WAAP deployments across on-premises and multi-cloud environments, ensuring functionality, stability, reliability, and detection accuracy.
  • Develop and execute end-to-end, functional, integration, and regression tests to ensure product quality and resilience.
  • Validate AI/ML-driven algorithms for API discovery, classification, API protection, and security detection accuracy.
  • Test and enhance API security detection capabilities, including OWASP API Top 10 attack identification and prevention.
  • Troubleshoot issues in complex distributed systems and microservices architectures, partnering with cross-functional teams to drive resolution.
  • Identify, track, and manage defects through their lifecycle, ensuring timely triage and closure.
  • Build and maintain test environments, deployment topologies, test plans, and supporting documentation.
  • Mentor junior engineers and champion best practices in quality engineering, automation, and continuous improvement.
  • Stay current with emerging trends in AI, test automation, cloud technologies, and API security.
Required Skills
  • 5+ years of experience in Quality Assurance and Test Automation, with a strong focus on product quality and reliability.
  • Strong programming and automation skills in Python, Go, or similar languages.
  • Solid understanding of web technologies, including HTML, HTTP/HTTPS, REST APIs, GraphQL, load balancers, and API gateways.
  • Experience working with JSON, YAML, OpenAPI/Swagger specifications, schema validation, and API testing.
  • Strong understanding of distributed systems, microservices architectures, Docker, and containerized environments.
  • Hands-on experience testing applications deployed on AWS, Azure, or GCP.
  • Experience with CI/CD pipelines, Git, and modern DevOps practices.
  • Proficiency with troubleshooting and network analysis tools such as Burp Suite, tcpdump, and Wireshark.
  • Strong analytical, debugging, and problem-solving skills with keen attention to detail.
  • Excellent communication and collaboration skills in cross-functional and globally distributed teams.
  • Bachelor's degree in Computer Science, Engineering, or a related technical field (or equivalent practical experience).
Preferred Skills
  • Experience validating Application Security and API Security controls against OWASP Top 10 and OWASP API Top 10 vulnerabilities.
  • Familiarity with observability and monitoring platforms such as ELK Stack, Grafana, and Prometheus.
  • Experience testing AI/ML-based systems and data science models in security, analytics, or related domains.
  • Strong understanding of networking concepts (Layers 3–7), including proxies, firewalls, and traffic inspection technologies.
  • Exposure to penetration testing methodologies and security validation best practices.

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 [email protected].

Skills Required

  • 5+ years of experience in Quality Assurance and Test Automation
  • Skilled in scripting and programming using Python, Go, or JavaScript
  • Experience with automation frameworks such as Selenium or Cypress
  • Proficient with JSON, XML, and OpenAPI/Swagger for creation, validation, and schema testing
  • Strong understanding of distributed systems and microservices, including Docker and containerized environments
  • Hands-on experience testing in cloud platforms such as AWS, Azure, or GCP
  • Familiarity with CI/CD pipelines, version control systems (Git), and DevOps practices
  • Proficient with troubleshooting and debugging tools including Burp Suite, tcpdump, and Wireshark
  • Bachelor's degree in Computer Science, Engineering, or equivalent practical experience
  • Knowledge of performance and load testing tools such as JMeter or WRK
  • Experience testing AI/ML-based data science algorithms and integration within security systems
  • Hands-on experience testing against OWASP Top 10 vulnerabilities for application and API security
  • Familiarity with observability and monitoring tools such as ELK Stack, Grafana, and Prometheus
  • Strong understanding of networking across Layers 3-7 including proxies, firewalls, and traffic inspection
  • Exposure to penetration testing techniques and security validation best practices

F5 Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about F5 and has not been reviewed or approved by F5.

  • Equity Value & Accessibility Equity grants and an employee stock purchase plan are positioned as meaningful parts of total compensation, with RSUs and a discount ESPP commonly included. Pay packages for many technical roles are considered competitive when equity is taken into account.
  • Leave & Time Off Breadth Paid vacation that increases with tenure, sick time, paid holidays, and paid family leave are prominently featured. Additional programs like volunteer time and periodic wellness long weekends are highlighted as part of the time-off ecosystem.
  • Inclusive Benefits Coverage Health plans include travel support for specific care (such as reproductive and gender‑affirming services) and mental health resources, alongside comprehensive medical, dental, and vision coverage. These elements are presented as part of a broad, inclusive approach to healthcare.

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The Company
HQ: Seattle, WA
5,847 Employees

What We Do

F5 application services ensure that applications are always secure and perform the way they should—in any environment and on any device. F5 (NASDAQ: FFIV) powers applications from development through their entire life cycle, across any multi-cloud environment, so our customers – enterprise businesses, service providers, governments, and consumer brands—can deliver differentiated, high-performing, and secure digital experiences.

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