L3 F5 Application Security Engineer

Job Description

The L3 F5 Application Security Engineer is responsible for delivering expert-level support for F5 Access Policy Manager, F5 Web Application Firewall, and Infoblox DNS Security solutions. This role provides 9x5 support and acts as the escalation point for critical issues, ensuring the integrity, performance, and security of application delivery and DNS environments. The ideal candidate will leverage deep technical expertise to troubleshoot and resolve complex security incidents while collaborating with cross-functional teams to enhance overall system resilience and security posture.

Key Responsibilities

• Technical Support & Incident Management:
• Provide expert-level 9x5 support for F5 Access Policy Manager, F5 Web Application Firewall, and Infoblox DNS Security environments.
• Serve as the L3 escalation point for critical incidents escalated from L1/L2 teams, ensuring timely and effective resolution.
• Perform root cause analysis on incidents, document findings, and recommend preventive measures.
• System Configuration & Maintenance:
• Configure, monitor, and maintain F5 security devices to optimize performance and security.
• Implement and manage policies, rules, and configurations for Access Policy Manager and Web Application Firewall.
• Apply patches, updates, and upgrades in accordance with best practices and organizational policies.
• DNS Security & Infoblox Management:
• Configure, monitor, and manage Infoblox DNS Security solutions to safeguard the DNS infrastructure.
• Implement and enforce DNS security policies, ensuring compliance with industry standards.
• Troubleshoot DNS security incidents and collaborate with network teams to ensure robust and secure DNS operations.
• Security & Compliance:
• Ensure adherence to security policies, industry standards, and compliance requirements across all managed platforms.
• Collaborate with security teams to conduct vulnerability assessments and security audits.
• Develop and enforce security best practices to mitigate risks and enhance the overall security posture.
• Collaboration & Documentation:
• Work closely with network, application, and infrastructure teams to troubleshoot and resolve cross-functional issues.
• Create and maintain detailed documentation on configurations, processes, and incident resolutions for F5 and Infoblox solutions.
• Provide training and knowledge transfer sessions to support teams to elevate overall operational competency.
  
  

Required Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Minimum of 5 years’ experience in network and application security, with a strong focus on F5 technologies and DNS security.
• Proven expertise in managing and troubleshooting F5 Access Policy Manager and F5 Web Application Firewall solutions.
• Experience with Infoblox DNS Security solutions and best practices.
• Solid understanding of networking protocols (TCP/IP, HTTP/HTTPS, DNS, etc.) and security protocols (SSL, TLS).
• Experience in incident response, system monitoring, and performance tuning within high-availability environments.
  
  

Desired Skills & Certifications

• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent communication and interpersonal abilities to effectively collaborate with technical and non-technical stakeholders.
• Ability to work in a fast-paced, dynamic environment while managing multiple priorities.
• Relevant F5 certifications (e.g., F5 Certified Administrator, F5 Certified Technology Specialist) are highly desirable.
• Familiarity with Infoblox certifications or training, change management, ITIL processes, and documentation best practices.
  
  

Working Conditions

• Provide 9x5 support, with the expectation of occasional on-call responsibilities.
• Work in a collaborative team environment, interacting with various IT and security teams.
• Maintain a high degree of flexibility to address evolving business needs and urgent security incidents.
  
  

At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We’re committed to fostering an inclusive environment where everyone can thrive.

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