Freelancer profile translated to English.
Back to original languageAbout Mateo
Expert with a dual background in Data & Cybersecurity, I assist companies in the secure valorization of their data and the protection of their information systems.
With over 6 years of experience in cybersecurity and data engineering within major groups (AEMA, Crédit Agricole, Bouygues, ENGIE), I have held responsible positions combining operational management, security strategy, and data structuring.
Cybersecurity — What I bring:
› Definition and implementation of IS security strategies (ISSP, SMSI, incident response plans)
› SOC management and CSIRT/CERT team leadership
› Risk governance: EBIOS RM, MEHARI, ISO 27001, GDPR
› Cyber crisis management and stakeholder coordination
› SIEM (Splunk, Securonix), XDR (Cortex, Microsoft Defender) solution deployment
› Compliance and audits: certification, clearance reviews, AD hardening
Data Engineering — What I bring:
› Data team leadership (12 engineers) and project portfolio structuring
› Business needs mapping, data inventory, and quality assessment
› DataHub and Data & Analytics platform architecture
› Technical stack: Snowflake, Talend, Dataiku, Qlik, Python, SQL
› Data literacy and training facilitation for business teams
My advantage: few profiles master both data governance and IS security. This dual expertise allows me to intervene where data and cybersecurity intersect — processing compliance, securing data architectures, protecting sensitive data, and information governance.
Available for consulting, management, or expert missions in Lyon and remotely.
Trilingual: French · Spanish · English
English
Fluent
Spanish
Native or bilingual
French
Native or bilingual
Can work on-site
Paris (up to 50km), Paris (up to 30km)
Experience
- AesioChief Data EngineerMEDICALSeptember 2025 - Today (9 months)Lyon, France
- Organizational and technical leadership: 12 data engineers
- Team structuring and portfolio management: Organizing teams responsible for Data projects with the implementation of strategies aligned with business objectives
- Transverse coordination of Data requests: Centralizing and prioritizing business needs, in liaison with internal teams to ensure consistency of processing
- Business needs mapping and data inventory: Identifying business needs and inventorying available data sources.
- Participation in technical and budget committees: Collaborating with IT and security experts to define the technical and budgetary orientations of the DataHub.
- Data & Analytics training and literacy: Facilitating training sessions
- AesioHead of Cybersecurity DepartmentMEDICALSeptember 2023 - September 2025 (2 years)Lyon, France
- Defining the company's security incident prevention, detection, and response strategy
- Planning and organizing the department's daily operations to assess vulnerability levels and detect suspicious or malicious activities
- Implementing an ISMS (writing and applying thematic policies, security directives, and procedures)
- Establishing comprehensive and accurate key performance indicator reporting
- Designing and integrating the cyber incident response plan and overseeing the execution of investigations and stakeholder coordination during security incidents
- Participating in defining a secure architecture for the security of communications, networks, messaging, AD, etc.
- Technical skills:
- Event log correlation tools and methods (SIEM Splunk)
- Security monitoring solutions (Cortex XDR and Microsoft Defender)
- Scripting (Python3)
- Elit-TechnologiesHead of Cybersecurity Business UnitDIGITAL AND ITNovember 2021 - September 2023 (1 year and 10 months)Lyon, France
- Risk governance (MEHARI & EBIOS Method)
- Management of client and supplier compliance (ISO27001 standard and GDPR)
- Cyber crisis management for our clients
- Organizational and technical leadership of cybersecurity services and managed services (SOC, Pentest, Audit, Forensics)
- Compliance for the French government's Cyber Expert certification
- Cybersecurity awareness
- Leadership of cybersecurity solution Proofs of Concept (POCs)
- Environment: CISCO Webex, Microsoft 365, CISCO Umbrella, CISCO AMP,
- Deepinstinct, Securonix (SIEM), CISCO Meraki, Palo Alto
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Education
- Master 2 Information Systems Management specializing in CybersecurityCESIJe suis actuellement en cours d'obtention de mon master 2 en Management des systèmes d'information spécialité cybersécurité.
- Multimedia Project Manager - UX & UI DesignHetic2019Étudiant à l'école HETIC, je réalise une année en alternance en WEBMARKETING UX-UI design, je programmes des applications web et m'occupe de l'optimisation SEO pour le référencement naturel.