À propos de Tristan
Français
Bilingue ou natif
Anglais
Capacité professionnelle complète
Expériences
- BPCE ITTech lead Hardening & Vulnerability AnalystBANQUE & ASSURANCESnovembre 2022 - Aujourd'hui (3 ans et 7 mois)Paris, FranceVulnerability & Audit Governance: Led the end-to-end remediation lifecycle using Qualys across global infrastructure, ensuring all audit findings were translated into actionable technical roadmaps.Compliance Enforcement (PCI-DSS, NIS2, DORA): Orchestrated hardening initiatives for high-sensitivity zones, maintaining strict alignment with regulatory requirements and hosting regular steering committees to close non-compliance gaps.Strategic Remediation Tracking: Facilitated monthly reviews with cross-functional teams to drive the closure of critical vulnerabilities and track the progress of security recommendations.Hardening Standardization: Engineered and deployed OS/Middleware hardening baselines based on CIS Benchmarks, achieving a measurable increase in the global infrastructure security posture.Continuous Risk Control: Integrated mandatory security scans for new system masters into the deployment pipeline to ensure "secure-by-design" compliance.Splunk Monitoring & Reporting: Created executive dashboards to track remediation KPIs and the progress of security audit actions.Global Support: Acted as the primary point of contact for international business units, providing expert guidance on vulnerability mitigation and hardening standards.
- Ministry ofHealth (Orange Cyber defense)Cybersecurity Consultantseptembre 2021 - novembre 2022 (1 an et 2 mois)Paris, FranceAdministration, supervision and maintenance of security equipment Security incident Management and request processingVulnerability analysis and reporting with NessusFirewalling and Network traffic analysis (F5, Palo Alto, Juniper) Bind DNS management and analysisManaging VIP on F5Proofpoint management.
- RamparNoc Analystseptembre 2017 - août 2021 (3 ans et 11 mois)Sèvres, FranceL2//L3 SupportQualys expertise, scanning and reporting, created multiple weekly scan with various intensity, weekly and monthly reportServer patch management on an iso 27001 infrastructure Linux Administration (kerberos, password manager)Splunk, Data analysis and reporting, created dashboards and extracted datas in order to troubleshoot multiple issuesVulnerability remediation on both windows server and linuxCheckpoint management, network troubleshooting and port opening, whitelistingWindows Administration, managed active directory and made GPO, deployed update through WSUS.
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Formations
- MASTER IN CYBERSECURITYESGI2021MASTER IN CYBERSECURITY
- Network EngineerESME Sudria2018Network Engineer