Cybersecurity Ops & Admin Specialist for GNSS Infra

ESYEN; Comunidad de Madrid; Presencial; EUR 42.000 - 68.000; Jornada completa

Descripción de la vacante

ESYEN is seeking junior and senior Cyber Security professionals to join the cybersecurity team supporting the E-GNSS Transversal infrastructure. The role blends administration and operations, with focus on monitoring, incident response, vulnerability management and access control in a critical Ground Segment environment.

You will work with international teams to maintain security posture, manage certifications and keys, and support risk assessments, patching, recovery, and audits across Galileo

Formación

• Degree or equivalent in Cybersecurity, CS, Engineering or related STEM field.
• Professional experience in Cybersecurity, IT Security, SOC or SysAdmin.
• Senior role requires solid cybersecurity experience; Junior considered with less background.
• Knowledge of firewall/IDS/IPS and SIEM technologies.
• Experience with incident investigation and response and log analysis.
• Understanding of vulnerability assessment, risk prioritisation and remediation.
• Experience with least-privilege access management and token/certificate handling.
• Security configuration, hardening and lockdown practices; patching and antivirus management.
• Backup, business continuity and disaster recovery knowledge.
• Threat intelligence awareness; ability to handle sensitive information; strong problem solving.
• Fluent English; Spanish is a plus; GNSS/aerospace or critical infra experience is a plus.
• Eligible for security clearance; on-site availability in Torrejón; occasional remote work may be agreed.

Responsabilidades

• Monitor and analyse security events and logs from security tools and platforms.
• Investigate incidents, support incident response, mitigation and remediation actions.
• Perform vulnerability assessments and prioritise risks for remediation.
• Manage user access, permissions, tokens and certificate handling under least-privilege.
• Support security devices and technologies including HSMs, data diodes and gateways.
• Apply secure configurations, hardening and lockdown procedures to components.
• Maintain security patches, antivirus and other protective tools.
• Assist threat intelligence activities and monitor emerging threats and vectors.
• Support security audits, compliance checks and provide required evidence and reporting.
• Contribute to cybersecurity documentation, KPIs and operational procedures.
• Collaborate with IT teams to identify and address infrastructure and operational anomalies.

Conocimientos

Cybersecurity

Security Operations

Incident Response

Vulnerability Assessment

Access Management

Encryption / PKI

Security Monitoring

English Proficiency

Educación

Bachelor's in Cybersecurity / CS / Engineering

Master's degree preferred

Equivalent cybersecurity certifications

Herramientas

Firewalls

IDS/IPS

SIEM platforms

HSMs

Data Diodes

Gateways

Patch management tools

Encryption key management

Descripción del empleo

ESYEN is seeking junior and senior Cyber Security professionals to join the cybersecurity team supporting the E-GNSS Transversal infrastructure. The role blends administration and operations, with focus on monitoring, incident response, vulnerability management and access control in a critical Ground Segment environment.

You will work with international teams to maintain security posture, manage certifications and keys, and support risk assessments, patching, recovery, and audits across Galileo