At NOVANOTIO, we are seeking a PERIMETER SECURITY ENGINEER to collaborate on projects within the air traffic domain, operating in a critical and high-availability technological environment. MINIMUM REQUIREMENTS: * Minimum of 3 years of experience in perimeter security tasks: Firewalls, switches, VPNs, networks, and systems. * Solid knowledge of Checkpoint, Forcepoint, and/or Fortinet firewalls, including their management systems. * Experience in Linux environments and communication networks. * University degree in Computer Engineering, Telecommunications, or similar. WHAT DO YOU NEED TO KNOW? * Knowledge of security regulations and best practices in critical systems. * Familiarity with perimeter security architectures. * Knowledge of Linux and other operating systems such as Solaris or Windows. * Analytical and rigorous ability for diagnosing and resolving security incidents. DESIRABLE KNOWLEDGE: * Advanced understanding of ATM system architectures. * Experience applying security regulations and frameworks. * Intermediate/advanced level in Linux system administration. RESPONSIBILITIES AND FUNCTIONS: * Engineering, consulting, and execution of projects related to perimeter security in critical systems. * Configuration, management, and maintenance of Firewalls, VPNs, and secure networks. * Technical analysis and mitigation of vulnerabilities in communication infrastructures. * Collaboration with multidisciplinary teams for the design and validation of secure solutions. ADDITIONAL INFORMATION: * Work mode: Hybrid (60% remote / 40% on-site). * Location: Madrid — Torrejón de Ardoz. * Travel: Occasional nationwide travel, only in critical cases. * Required qualification: Degree in Computer Engineering, Telecommunications, or similar. * Workplace: Technical office specialized in security and critical systems engineering. WHAT DO WE OFFER? Indefinite contract. SALARY NEGOTIABLE according to experience and qualifications. Have you planned vacations? We respect them. Possibility of FLEXIBLE COMPENSATION (medical insurance, childcare voucher, transport card, restaurant tickets). TRAINING TAILORED to your role and personal and professional interests. Advanced English / Expert Spanish / Travel: Yes To apply for this job **send an email with your details to** seleccion@novanotio.es