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NTT DATA Logo NTT DATA · IT - Administration

Security Engineer WAF & SSLO (L3)

India, Mumbai · Job Posted January 25, 2026
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Job Description

The L3 WAF and SSL Orchestration Engineer will be a senior technical expert responsible for the design, implementation, and advanced support of Web Application Firewall (WAF) and SSL Orchestration (SSLO) solutions. The ideal candidate will have extensive experience in a large-scale banking or financial services environment, with a deep understanding of network security, regulatory compliance, and application delivery. This role requires expertise in protecting mission-critical web applications from advanced threats and ensuring the secure and seamless inspection of encrypted traffic.

Job Responsibility

  • Serve as the L3 escalation point for critical incidents related to F5 WAF, SSLO, and other BIG-IP modules.
  • Configure, tune, and maintain F5 Advanced WAF (formerly ASM) policies to protect against OWASP Top 10 vulnerabilities and other application-layer threats.
  • Implement and manage F5 BIG-IP SSL Orchestrator (SSLO) for traffic decryption and steering to security devices.
  • Manage configurations for F5 BIG-IP platforms, including virtual servers, profiles, and iRules, and perform upgrades and patching.
  • Coordinate with F5 support (TAC) and other OEMs for technical assistance, Return Merchandise Authorization (RMA), and reconfiguration.
  • Perform root cause analysis (RCA) on complex security incidents and recommend preventive measures.
  • Troubleshoot and resolve complex application traffic anomalies, security violations, and connectivity issues.
  • Investigate and resolve WAF incidents by analyzing packet captures using tools like Wireshark.
  • Maintain network and security architecture diagram and review and update the based-on changes. Further, proper maintenance for LLD and HLD for each solution and regular update of the same.
  • Provide the suggestions for any enhancements/changes that can enhance the security posture and/or add business value to the delivery framework.
  • Develop and document standard operating procedures and runbooks for incident response related to WAF & SSLO events.
  • Shall analyze incidents independently & identify root cause and act for containment and remediation.
  • Provides engineering analysis and architectural design of technical solutions
  • Sound analytical and troubleshooting skills
  • Good Team Management and co-ordination skills

Requirements

  • Education*: BE/B-Tech/BCA or master’s degree in CS/IT
  • Certification*: CCNA/CCNP Sec + OEM F5 Certification F5-CA or F5-301 (2 certifications)
  • Experience*: 6-8 years’ relevant experience.
  • Technology (OEM)*: F5 BIG-IP (LTM, ASM),(HTTP/HTTPS, REST APIs),(OWASP Top 10, DDoS).
  • Skills: F5 BIG-IP LTM, Advanced WAF, and SSLO, understanding of web application security and OWASP Top 10
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