- Company Name
- Groupe LGM
- Job Title
- Administrateur(rice) Sécurité Systèmes & Réseaux - H/F
- Job Description
-
Job title
Systems & Network Security Administrator
Role Summary
Responsible for monitoring, analyzing, and responding to security alerts, managing data‑posture security, and conducting security audits within a multidisciplinary IT and cybersecurity team. Works closely with an external SOC, stakeholders, and internal IT to maintain compliance with standards such as ISO 27001 and GDPR.
Expectations
- Actively investigate and qualify alerts from Crowdstrike, Vectra, Varonis Dataprivileges, EDGE, and DatAlert.
- Coordinate incident handling with the external SOC and ensure timely resolution.
- Deploy and audit Varonis Dataprivileges, manage user privileges, and secure access to sensitive data.
- Participate in tool maintenance, threat intelligence updates, and employee security awareness.
- Contribute to annual risk audits, configuration reviews, KPI tracking, and compliance reporting.
- Provide technical support for security incidents and produce clear documentation and procedures.
Key Responsibilities
1. Security Alert Management
• Analyze and triage alerts from Crowdstrike, Vectra, Varonis, EDGE, and DatAlert.
• Escalate and resolve incidents in collaboration with the external SOC.
2. Data Posture Security Management (DPSM)
• Deploy and maintain Varonis Dataprivileges continuously.
• Audit access rights and implement privilege controls (Tiering / Least Privilege).
• Work with business units to secure sensitive data access.
3. Maintenance & Optimization
• Update security tools and configurations.
• Stay informed on threat landscape and emerging cyber‑security solutions.
• Deliver security training and awareness to internal teams.
4. Internal Audits & Compliance
• Conduct configuration audits of firewalls, IDS/IPS, and access controls.
• Track KPIs: patch rate, vulnerability remediation, incident closure.
• Review and validate security aspects of new solutions and projects.
• Draft audit reports and recommend operational improvements.
5. Technical Support & Documentation
• Assist IT teams with security incidents.
• Create and maintain security procedures and documentation.
Required Skills
- Proficiency with EDR/XDR solutions (Crowdstrike, Vectra).
- Experience with privilege and data‑security tools (Varonis Dataprivileges, EDGE, DatAlert).
- Strong event analysis, alert handling, and incident response skills.
- Knowledge of DPSM principles, privilege management, and least‑privilege practices.
- Familiarity with ISO 27001, GDPR, and other cyber‑security standards.
- Excellent written and verbal communication in technical English.
- Collaborative mindset, proactive problem‑solving, and clear documentation.
Required Education & Certifications
- Minimum Bachelor’s degree (Bac + 3) in Computer Science, Information Security, or related field.
- At least 5 years of experience in IT security administration.
- Relevant certifications (e.g., CISSP, CISM, CompTIA Security+, ISO 27001 Lead Implementer) are an advantage but not mandatory.
Vélizy-villacoublay, France
Hybrid
Mid level
06-11-2025