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CADABRA Linkedin · Posted 2d ago

Information Security Engineer (F5 and Security Tool Administrator)

Sofia

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Indexed description

Our client is the leading offer management provider for the airline industry, helping airlines deliver seamless retail experiences that maximize revenue and margin growth. Powered by AI, their Platform enables commercial teams to align capacity with demand and coordinate pricing, merchandising, and offer strategies to deliver optimal offers in real time. By optimizing every customer interaction, the platform helps airlines improve revenue performance, increase commercial agility, attract more customers, and build long-term loyalty.

Currently, they are looking for an experienced F5 Administrator to manage and maintain its F5 infrastructure, including BIG-IP, BIG-IQ, and F5 Distributed Cloud (XC) platforms. The ideal candidate will bring a strong background in application delivery, security policy management, and advanced traffic protection technologies such as Bot Defense and DDoS mitigation. They welcome candidates with AI fluency & growth mindset • Understand core AI concepts • Craft effective prompts • Explore and apply agentic AI systems • Leverage AI tools • Stay curious and adaptable


Daily Duties:

Administration & Maintenance

  • Configure, deploy, and maintain F5 BIG-IP and BIG-IQ services
  • Manage F5 Distributed Cloud (XC) components for global application delivery and security
  • Perform regular updates, patches, and upgrades to ensure system stability and compliance

Security & Policy Management

  • Create, update, and maintain security policies, including WAF (Web Application Firewall) configurations
  • Implement and tune bot profiles to mitigate automated threats
  • Configure and monitor DDoS protection across F5 platforms

Monitoring & Troubleshooting

  • Monitor system health, performance, and security alerts
  • Troubleshoot and resolve issues related to traffic management, SSL/TLS, and application availability.
  • Provide root cause analysis and implement preventive measures

Documentation & Compliance

  • Maintain detailed documentation of configurations, policies, and operational procedures
  • Ensure compliance with organizational security standards and regulatory requirements


About you:

Technical Expertise

  • Hands-on experience with F5 BIG-IP modules (LTM, ASM, AFM, DNS, APM)
  • Experience with advanced features such as IP Intelligence
  • Familiarity with BIG-IQ for centralized management and analytics
  • Knowledge of F5 Distributed Cloud (XC) services and architecture
  • Strong understanding of networking protocols (TCP/IP, HTTP/HTTPS, DNS, SSL/TLS)

Security Focus

  • Experience configuring WAF policies, Bot Defense, and DDoS mitigation
  • Understanding of OWASP Top 10 and application security best practices

Other Requirements

  • Scripting skills (Python, Bash, or iRules) for automation and customization
  • Excellent problem-solving and communication skills
  • Ability to work independently and in a team environment


Highly Preferred:

  • F5 Certified Technology Specialist (CTS) or F5 Certified Solution Expert (CSE)
  • Experience with cloud integrations (AWS, Azure, GCP) and API-based automation
  • Experience in administering Application Security and CNAPP tools (Veracode/SonarQube/Wiz


What You Can Expect:

  • Join a global leader in AI-powered airline retailing with nearly 40 years of industry expertise
  • Work on innovative technologies that help the world's leading airlines optimize revenue and customer experiences
  • Be part of a collaborative, supportive culture that values growth, learning, and innovation
  • Enjoy flexible ways of working and opportunities for continuous professional development
  • Contribute to a company at the forefront of the future of AI-driven travel technology
  • Competitive remuneration package with a wide range of employee benefits


For more details, let's talk at [email protected]

(Recruitment License № 2709/ 17.01.2019)

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