Freelancer profile translated to English.
Back to original languageAbout Massin
CyberArk Consultant | PAM Expert
Expert CyberArk, I help companies secure and industrialize their privileged access on critical environments.
I have worked with large companies like GRDF and was the CyberArk referent at Sisley, with complete responsibility for the solution (deployment, administration, optimization), in full autonomy.
Certified CyberArk Defender and CyberArk Sentry, I intervene quickly with a pragmatic and results-oriented approach.
Desired Missions
Available for CyberArk (PAM) missions:
Deployment & integration
RUN / administration
Automation & optimization
Scoping & expertise
Objective: secure quickly, industrialize sustainably, and make your CyberArk environment reliable.
French
Native or bilingual
English
Fluent
Can work on-site
Cergy (up to 50km)
Experience
- GRDFCyberark PAM ConsultantENERGY AND UTILITIESDecember 2025 - Today (6 months)Saint-Denis, FranceContext: Self-Hosted · ~60,000 privileged accounts and ~1000 Administrators▸ Ensured daily RUN: creation and administration of vaults, groups, and privileged accounts▸ Developed about twenty connectors (WEB applications and thick clients) in a few weeks▸ Managed CyberArk licenses and ensured patching of components (CPM, PSM, PSMP, Vault, PVWA)▸ Implemented password rotation and reconciliation automations to handle errors without manual intervention▸ Optimized the icebreaker process and formulated recommendations for continuous improvement▸ Solved N2/N3 incidents: diagnosis and resolution of complex CyberArk incidents (rotation errors, privileged access issues, malfunctions)
- SYNETISConfirmed Cyberark ConsultantCONSULTING AND AUDITSJune 2025 - Today (1 year)Paris, France▸ In-depth CyberArk Cloud training on dedicated test platforms▸ Led 2 PAM scoping projects for major clients▸ Provided Application Maintenance Services (AMS) on CyberArk production environments▸ Obtained CyberArk Defender and CyberArk Sentry certifications
- SisleyCybersecurity EngineerLUXURY GOODSNovember 2023 - April 2025 (1 year and 5 months)Saint-Ouen-l'Aumône, FranceContext: Self-Hosted · ~2,000 privileged accounts and ~200 administrators-> Management of cybersecurity tools:- EDR: Agent version upgrades, USB blocking policy deployment, and alert investigation.- NDR: Network alert analysis, threat identification, and whitelisting of irrelevant alerts to reduce false positives.- IDP: Creation of groups and access rules related to VPN and Proxy, SSO configuration with SAML/OIDC, MFA implementation to secure authentication.-> Cyberark Referent (Self-Hosted 12.6):- Maintenance and operation of various servers (CPM, PSM, PSMP, Vault, PVWA, PTA)- Implementation of password rotation (RDP, SSH, WEB)- Addition of platforms dedicated to each need- Addition of safes and groups to manage access rights- Intermediate connection platform (MobaXterm)- Addition of connectors (RDP, SSH, WEB)- Implementation of account security policies- Implementation of icebreaker- Solved N2/N3 incidents: diagnosis and resolution of complex CyberArk incidents (rotation errors, privileged access issues, malfunctions)-> SOC alert monitoring to identify and manage security incidents in real-time-> Participation in various Cybersecurity events (FIC and Assises de la CyberSécurité)
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Education
- Network and Security EngineerESIEE PARIS2023
- BTS Services Informatiques aux OrganisationsESIEE-IT2019Option SISR : Solutions d'Infrastructure, Systèmes et Réseaux