Senior WAF Engineer

Job Description Summary: We are seeking a Senior WAF Engineer with 7 years of experience in securing web applications and APIs using Web Application Firewalls (WAF) and edge security controls. The ideal candidate will have at least 3 years of hands-on experience with Imperva (preferred) or Cloudflare. In this role, you will be responsible for the design, implementation, and optimization of WAF policies, including rule tuning, deployment automation, and real-time response to security threats such as OWASP Top 10 vulnerabilities, bot attacks, and Layer 7 DDoS incidents. You will collaborate closely with DevOps, SRE, and application development teams to enhance security posture while ensuring minimal false positives and maintaining optimal application performance. Key Responsibilities: Design, implement, and manage WAF policies for web applications and APIs across environments (dev/stage/prod). Configure and tune managed rules and custom rules to mitigate OWASP Top 10 (SQLi, XSS, CSRF, RCE, LFI/RFI, SSRF, etc.). Perform rule tuning and false-positive reduction using traffic baselining, exception handling, and staged enforcement (monitor → challenge → block). Implement rate limiting, IP reputation, geo/ASN controls, and bot mitigation strategies to reduce abuse and credential stuffing. We Need: 7 years’ experience in WAF engineering and Implementation. Hands-on experience with at least one WAF platform: Imperva(preferred), Akamai, ModSecurity, AWS WAF, Azure WAF, Cloudflare, F5 ASM/Advanced WAF, Strong understanding of HTTP/HTTPS, web app architecture, REST APIs, and common attack patterns. Proven experience tuning WAF rules and balancing security vs. false positives. Experience with logging/monitoring and SIEM integrations. Scripting/automation skills: Powershell/Python/Bash (plus regex and JSON/YAML). Familiarity with CI/CD and Infrastructure-as-Code principles. Good troubleshooting and stakeholder communication skills. Preferred Qualifications: Experience with bot management and advanced detection techniques (behavioral, fingerprinting where supported). Experience with API gateways and API security controls (schema validation, auth hardening). Working knowledge of cloud networking/CDN/reverse proxy concepts. Security certifications: AWS Security Specialty, Azure Security Engineer, CCSP, CEH, Security (nice to have). Tools & Technologies WAF (AWS/Azure/Cloudflare/F5/Imperva), CDN, TLS, SIEM (Splunk/Sentinel), Terraform, CI/CD (Jenkins/GitHub Actions/Azure DevOps), Python, Linux, Git.