F5WAF & Ddos- L3 Network Security Engineer

L3 Security Engineer – WAF DDOS

Job Summary

We are seeking an experienced L3 Security Engineer with hands-on expertise in F5 Web Application Firewall (WAF) solutions. The candidate will be responsible for monitoring, administration, troubleshooting, policy support, and operational maintenance of enterprise web application security infrastructure.

Key Responsibilities

· Manage and support F5 WAF infrastructure and web application security solutions.

· Monitor WAF alerts, web traffic, and security events.

· Configure and maintain WAF security policies, signatures, and profiles.

· Support onboarding of web applications into the WAF environment.

· Perform policy tuning and optimization to reduce false positives.

· Analyze suspicious web traffic and investigate security incidents.

· Support SSL certificate installation and management.

· Generate operational, security, and compliance reports.

Security Operations

· Monitor web application security incidents and suspicious activities.

· Support SOC and Incident Response teams during investigations.

· Perform log analysis and event correlation.

· Escalate critical security incidents to L3/security teams.

· Ensure WAF policies align with organizational security standards.

Platform Support & Troubleshooting

· Troubleshoot WAF policy, connectivity, and application access issues.

· Support installation, patching, upgrades, and maintenance activities.

· Monitor F5 device health, storage, and performance.

· Coordinate with application, server, and network teams for issue resolution.

· Perform backup and restoration support activities.

Compliance & Governance

· Support compliance requirements related to web application security.

· Maintain audit logs and WAF monitoring reports.

· Support audits related to ISO 27001, PCI-DSS, and internal security controls.

· Ensure proper documentation and evidence collection for audit requirements.

Required Skills

· Hands-on experience with F5 WAF / F5 ASM solutions.

· Knowledge of web application security concepts and OWASP Top 10 vulnerabilities.

· Experience with WAF policy management, signatures, and rule tuning.

· Understanding of HTTP/HTTPS, SSL/TLS, DNS, TCP/IP, and load balancing concepts.

· Experience troubleshooting web application access and security issues.

· Basic Windows/Linux administration knowledge.

· Strong troubleshooting and analytical skills.

Preferred Certifications

· F5 Certified Administrator (F5-CA)

· F5 ASM/WAF Certification

Experience & Qualification

· 5-7 years of cybersecurity or WAF administration/support experience.

· Minimum 2+ years of hands-on F5 WAF support experience.

· Bachelor’s degree in Computer Science, Information Security, or related field.

Good to Have

· Experience with SIEM platforms such as Splunk, QRadar, or Microsoft Sentinel.

· Knowledge of PowerShell, Python, or Bash scripting.

· Exposure to cloud environments such as AWS, Azure, or GCP.

· Understanding of compliance frameworks and audit requirements.