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Recently postedFull timeEngineering

F5 WAF Engineer

IS3 SolutionsSaint Louis, Missouri🇺🇸United States

Quick overview

SeniorityMid Senior
Employment typeFull Time
Work modeHybrid
LocationSaint Louis, Missouri, United States

Job description

Job Description Job Description We are seeking an experienced F5 WAF Engineer to support the design, implementation, administration, and optimization of enterprise application delivery and web application security solutions. The ideal candidate will have hands-on expertise with F5 BIG-IP technologies, including LTM and ASM/Advanced WAF, and a strong background in application security, load balancing, traffic management, and web application protection. The engineer will work closely with infrastructure, security, and application teams to ensure high availability, scalability, and security of critical business applications.

Key Responsibilities

  • Design, implement, and support F5 BIG-IP solutions including:
    • Local Traffic Manager (LTM)
    • Advanced WAF / Application Security Manager (ASM)
    • Global Traffic Manager (GTM/DNS)
    • Access Policy Manager (APM)
  • Configure and manage web application firewall policies to protect enterprise applications from OWASP Top 10 and emerging threats.
  • Develop, deploy, and maintain F5 iRules, policies, profiles, and virtual servers.
  • Perform application onboarding, SSL certificate management, and traffic optimization activities.
  • Troubleshoot application delivery, load balancing, and security incidents across complex enterprise environments.
  • Support migration, upgrade, and modernization initiatives involving F5 platforms.
  • Conduct performance tuning and capacity planning to ensure optimal application availability.
  • Collaborate with security and development teams to identify and remediate application vulnerabilities.
  • Support incident response and root cause analysis for application and network security issues.
  • Create and maintain technical documentation, operational procedures, and architecture diagrams.
  • Participate in on-call support and maintenance activities as required.
Required Qualifications
  • 5 years of experience administering and engineering F5 BIG-IP environments.
  • Strong experience with:
    • F5 LTM
    • F5 ASM / Advanced WAF
    • SSL/TLS administration
    • Load balancing concepts
    • High availability configurations
  • Experience developing and troubleshooting F5 iRules.
  • Strong understanding of:
    • HTTP/HTTPS
    • DNS
    • TCP/IP
    • Web application security principles
  • Experience implementing WAF policies and mitigating web application threats.
  • Knowledge of OWASP Top 10 vulnerabilities and remediation techniques.
  • Ability to troubleshoot complex application and network connectivity issues.
  • Excellent communication and documentation skills.
Preferred Qualifications
  • Experience with F5 Distributed Cloud WAAP.
  • F5 Certified Administrator (CA) or F5 Certified Technology Specialist (CTS).
  • Experience with cloud platforms including Azure, AWS, or Google Cloud.
  • Familiarity with automation tools such as:
    • Terraform
    • Ansible
    • Python
    • REST APIs
  • Experience supporting PCI, SOX, HIPAA, or other regulated environments.
  • Knowledge of Zero Trust and API security frameworks.
Technical Skills

F5 Technologies

  • BIG-IP LTM
  • BIG-IP ASM / Advanced WAF
  • BIG-IP GTM/DNS
  • BIG-IP APM
  • iRules
  • SSL Offloading
  • Load Balancing
  • Traffic Management
Security
  • Web Application Firewall (WAF)
  • OWASP Top 10
  • Application Security
  • API Security
  • Threat Mitigation

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