ESYEN is an engineering company providing services to the Space Industry, supporting major international Customers and Agencies such as EUSPA and ESA. Our teams support the design, deployment and operations of critical Ground Segment infrastructures, delivering engineering and operational services across Italy, Germany, France and Spain. We are looking for Junior and Senior Cyber Security professionals to join the cybersecurity team supporting the E-GNSS Transversal infrastructure , within the framework of the E-GNSS Transversal Service (ETS) .

The role combines cybersecurity administration and operational activities, with a focus on maintaining a secure and resilient infrastructure. Depending on experience and seniority, the position will involve security monitoring and incident response, vulnerability management, access and permissions management, secure configuration and hardening, security tools administration, and support to cybersecurity compliance and operational activities. Degree/Master's degree in Cybersecurity, Computer Science, Engineering or a related STEM discipline, or equivalent cybersecurity certifications.

Previous professional experience in Cybersecurity, IT Security, Security Operations or System Administration. For the Senior profile, solid professional experience in cybersecurity is expected; the Junior profile can be considered with a more limited professional background. Knowledge of security monitoring technologies, including Firewalls, IDS/IPS and SIEM platforms .

Experience or knowledge of incident investigation and response , including the analysis of security events,



logs and suspicious activities. Knowledge of security tokens, cryptographic keys and digital certificates . Familiarity with hardware and software security configuration, hardening and lockdown activities .

Fluent

English, both written and spoken. Spanish is considered an additional asset but is not mandatory. Cybersecurity certifications such as GSEC, GIAC, CISSP or CCSP are considered an advantage. Partial remote working may be agreed with the Customer upon contract start.

As part of the cybersecurity team, you will contribute to the day-to-day security operations and administration of the E-GNSS Transversal infrastructure. Manage security keys and digital certificates, including credential renewal and revocation. Support the administration and maintenance of security devices and technologies, including Hardware Security Modules (HSMs), Data Diodes, Gateways and other security components .

Apply secure configurations, hardening and lockdown procedures to hardware and software components. Support access control reviews, security compliance activities and the implementation and validation of cybersecurity controls. Handle classified and sensitive information, including data extraction,



import/export and sanitisation activities, in accordance with applicable security procedures.

Apply appropriate encryption and data-protection measures to ensure the confidentiality, integrity and availability of information. Support security audits, penetration tests and compliance checks, providing the required operational evidence and documentation. Contribute to cybersecurity documentation, reports and KPIs, including vulnerability, network, mitigation and lockdown reports.

Develop and maintain security procedures related to cybersecurity administration and operations. Collaborate with IT and other technical teams to identify infrastructure and operational anomalies and improve the overall security posture. Support handover simulation exercises and, when necessary, provide temporary on-site support at the Toulouse backup site.

You will contribute directly to the cybersecurity of the European GNSS infrastructure, gaining hands-on experience across security operations, monitoring, incident response, vulnerability management, threat intelligence and security administration within a highly critical Ground Segment environment. The successful candidate will be offered a permanent contract together with a competitive salary package based on experience and skills. Health coverage as provided by the National Collective Agreement ✔ Professional training and career development ✔ Adaptable working hours ✔ Relocation support, where applicable Junior: €28,000 – €35,000 Senior: €42,000 – €52,000

📌 Cyber-Security Admin e Analyst (Madrid)
🏢 ESYEN
📍 Madrid