> Markdown version of [/jobs/ext/2978965-network-security-administrator-ingles](https://www.wearedevelopers.com/jobs/ext/2978965-network-security-administrator-ingles). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network & Security Administrator (INGLÉS) - **Company:** CAS - **Location:** Barcelona, Spain - **Salary:** €24,000.0 - €27,000.0 - **Contract:** Permanent contract - **Skills:** Network Security, Network Architecture, Load Balancing, Performance Testing - **Published:** September 18, 2026 - **Apply:** https://www.tecnoempleo.com/network-security-administrator-ingl-s-cas-training/waf-f5/rf-1e06173ee24f93b2c64a ## About the Role Advanced administration, maintenance and troubleshooting with NGFW (Palo Alto and CheckPoint desirable) Experience with load balancing devices (F5, Radware) will be taken into account. Additional routing and switching protocols and technologies is desired. An advanced level of spoken English is required for this position (B2 minimum, C1 desirable., Administrador Redes Idiomas: Inglés (Alto) Formación Mínima: Otros títulos, certificaciones y carnets Nivel Profesional: Especialista ## Description System administrator, security and troubleshooting WAF F5. - Maintain and upgrade existing secure network infrastructure. - Monitoring and configuration network performance testing and evaluation. - Manage network security. - Troubleshoot network-related technical issues Cross-functional knowledge of complex end-to-end troubleshooting, administration and fine tuning of the following secure network technologies is required: - Experience with WAF advanced administration, maintenance and troubleshooting (F5 desirable) - Management of navigation through proxy and troubleshooting in scenarios where this technology is involved (Netskope desirable) ## Related Videos - [gRPC Load Balancing Deep Dive](https://www.wearedevelopers.com/videos/1576-grpc-load-balancing-deep-dive) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Frontend Performance Testing in practice](https://www.wearedevelopers.com/videos/8-frontend-performance-testing-in-practice) - [Small, Secure, Interconnected: The next Internet Protocol](https://www.wearedevelopers.com/videos/100062-small-secure-interconnected-the-next-internet-protocol) - [Demystifying application networking in the cloud](https://www.wearedevelopers.com/videos/675-demystifying-application-networking-in-the-cloud) - [Measure and improve frontend performance by using test automation](https://www.wearedevelopers.com/videos/719-measure-and-improve-frontend-performance-by-using-test-automation) ## Related Articles - [Spanish Business Culture and Etiquette](https://www.wearedevelopers.com/magazine/353-spanish-business-culture-and-etiquette) - [Finding IT & Technology English-speaking Jobs in Germany ](https://www.wearedevelopers.com/magazine/446-finding-it-technology-english-speaking-jobs-in-germany) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)