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Nathan LeclercqNL

Nathan Leclercq

Cybersecurity Engineer - GRC

€600/day
Lyon, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Nathan

GRC Cybersecurity Engineer, I specialized in the banking sector. My experience has allowed me to acquire expertise in crisis management and operational resilience, risk management, and operational security. I also worked extensively with business stakeholders, which allows me to understand cyber challenges and their impacts today.
My varied experience allows me to adapt in all fields.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Lyon (up to 50km), Marseille (up to 50km), Paris (up to 50km), Toulouse (up to 50km)

Experience

  • Crédit Agricole Technology Serices
    GRC Cybersecurity Consultant
    BANKING AND INSURANCE
    June 2025 - Today (1 year and 2 months)
    Security Desk Management:
    oImplementation of whitelists/blacklists on CATS proxies and Regional Banks
    oSecurity analysis of new software
    oValidation of firewall rule modifications
    oValidation for antivirus and EDR exceptions
    oManagement of cyber incidents sent by the SOC
    oAccess management
    VSE Referent (AlgoSec)
    oSecurity analysis and validation of requests for opening flows between different SI zones
    oImplementation of a flow opening rule matrix
    oImplementation of exceptions in collaboration with the CISO team
    Vulnerability Remediation
    oReception of CVE alerts from CERT
    oEscalation to the responsible solution Squads
    oFollow-up of remediation
    Implementation of Level 1 Controls
    Analysis and validation of AI solution usage
    Cybersecurity Incident Management Information Security Security Measures Operational Security Governance, Risk & Compliance (GRC)
  • Ceres Partners
    Information System Manager - PMO
    January 2024 - December 2024 (11 months)
    Use of EBIOS RM method for risk analysis
    Operational Resilience
    oIT risk analysis leading to business cessation
    oStudy of solutions to ensure business continuity and recovery
    oThird-party risk management
    GDPR
    oPersonal data processing
    Integration of security into the project
    oAnalysis of various web vulnerabilities (OWASP 10)
    oSelection of security solutions to implement
    oTeam training
    PMO and Technical Assistance for Web Application Development
    oRequirements gathering
    oRFI / RFP
    oWriting of specifications
    oDefinition of KPIs for project monitoring
    oTechnical assistance on the development of Binance APIs and trading strategies in Python
    Operational Resilience ISP PMO Risk Management Risk Analysis
  • BNP Paribas
    IT Security Engineer
    BANKING AND INSURANCE
    September 2021 - September 2023 (2 years)
    Business Continuity:
    oDORA Compliance
    • Understanding of DORA and its implications for financial institutions.
    • Gap Analysis and identification of discrepancies
    oAnalysis of risks related to Information and Communication Technologies (ICT)
    oReview of Business Impact Analysis (BIA)
    oWork on operational resilience
    oImplementation of business continuity and recovery plans
    oTesting and validation of business continuity plans
    oAutomation of processes related to business continuity
    Crisis Management:
    oOrganization of crisis exercises
    oImplementation of crisis management teams
    oParticipation in Bank of France crisis exercises
    oMaintenance of the Everbridge application:
    • Weekly loading of contacts from all entities
    • Gap analysis to verify complete import
    • Troubleshooting errors (files, macros, etc.)
    oContinuous improvement
    oOverhaul of contact integration procedures to standardize processes between CIB and other entities
    Phishing test campaigns and communication around Everbridge
    Training of the Portugal crisis management team
    Crisis Management Risk Analysis Operational Resilience BCP/DRP Training and Awareness

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Education

  • Engineering Degree
    ESME Sudria Paris School
    2023
    Diplôme d'ingénieur

Certifications

Skill set

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