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WAF Adversarial Validation Engineer: 26-01368

Seattle, WA 98103

Posted: 06/16/2026 Job Category: Software Engineering & Development Job Number: 26-01368 Country: US

Job Description

Primary Skills: WAF Evasion Expert, HTTP Protocol Expert, API Security Expert, Python Scripting Expert, CI/CD Integration Expert
Contract Type:  W2
Duration:  12+ Months
Location: Seattle, WA #LI-Hybird
Pay Range: $60 - $65 per hour on W2
#LP

Job Summary:
This role requires an experienced security engineer to conduct continuous adversarial validation of our Web Application Firewall (WAF) stack. The engineer will perform offensive testing to identify WAF bypasses and logic flaws, contributing directly to improved defensive rule sets. This position is integral to our WAF program, ensuring ongoing effectiveness against evolving threats.
Key Responsibilities:
  • Execute adversarial test campaigns against WAF platforms, focusing on diverse bypass techniques.
  • Develop and maintain a comprehensive WAF bypass library, organizing findings by vulnerability class.
  • Conduct adversarial testing of API endpoints, including business logic abuse and authorization flaws.
  • Translate offensive findings into actionable defensive rule candidates for WAF refinement.
  • Provide critical adversarial insights during active edge security incidents.
Must-Have Skills:
  • Demonstrated WAF bypass experience against commercial WAF platforms.
  • Deep understanding of HTTP protocol edge cases impacting WAF inspection.
  • Proven ability to translate offensive findings into defensive rule recommendations.
Domain/Industry Experience: Not explicitly required, but experience with cloud environments (AWS/Azure) and CI/CD pipelines is beneficial.

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