
Jean Marc DJEAHOU
Senior Cyberdefense Expert | CSIRT & PAM Architect
Salaire / Taux journalier
Sandweiler, Luxembourg
Freelance, ouvert au CDI
Expertises
Langues
À propos
Introduction
Senior Cyberdefense Expert specialized in CSIRT and PAM architecture, with extensive experience in incident response, privileged access risk reduction and hybrid security design. Hands-on expertise across SIEM/SOAR, XDR, VMDR, NDR, NGFW, Application and Cloud security. Trusted advisor to CISO and executive IT teams.
Expérience de travail
Senior Cyberdefense Expert | CSIRT & PAM Architect
Banque centrale du Luxembourg (BCL)Freelance
févr. 2026 - Présent
9 mois
Luxembourg
Cloud & CyberSecurity Expert | Security Specialist
Cargolux Airlines
sept. 2024 - janv. 2026
1 an 5 mois
Sandweiler, Luxembourg
𝐎𝐧 𝐚𝐬𝐬𝐢𝐠𝐧𝐦𝐞𝐧𝐭 𝐚𝐭 𝐂𝐚𝐫𝐠𝐨𝐥𝐮𝐱 𝐀𝐢𝐫𝐥𝐢𝐧𝐞𝐬 𝐈𝐧𝐭𝐞𝐫𝐧𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐒.𝐀.- 𝐇𝐞𝐚𝐝𝐪𝐮𝐚𝐫𝐭𝐞𝐫 - Leading, architecting, and providing L3 support for Zscaler solutions, including Zero Trust, Zscaler Internet Access (ZIA), and Zscaler Private Access (ZPA). - Analyzing and hardening Zscaler’s Cyber Threat Protection (Advanced Threat Protection, Botnet Protection, Deception, URL & Cloud App Control, App Protection, Browser Isolation, etc.). - Deploying and managing WAF security policies (Managed Rules, Custom Rules, Bot Protection) on Azure Front Door and Azure Application Gateway to protect web applications against OWASP Top 10 attacks. - Providing strategic recommendations on DDoS protection, Private Access solutions, and security licensing (FortiAnalyzer, Sentinel, FortiGate Cloud, etc.). - Designing, pricing and implementing Microsoft Sentinel and Workspace Log Analytics. - Integrating Azure Sentinel with third-party security solutions (ZIA, ZPA, Infoblox Threat Defense, Purview, Recorded Future Threat Intelligence). - Configuring Playbooks (Logic App-based) and Analytics Rules to manage, detect, and respond to security incidents. - Leveraging Sentinel Notebooks for interactive investigation and advanced threat hunting using KQL, Python, and Machine Learning. - Managing Azure resources (WAF, VM, NSG, AppGW, AzDDoS, Load Balancer, etc.). - Serving as an SME for FortiManager & FortiAnalyzer implementation and management to ensure network security (clustering, flow rules, session-helper, etc.). - Analyzing and integrating firewall clusters with AlgoSec for security posture assessment and configuration optimization (fine-tuning firewall dataplane resources). - Automating the management and issuance of PKI certificates using Microsoft ADCS. - Collaborating closely with cross-functional teams (IT, Network, App Dev, Security) to ensure seamless integration of security measures across the organization.
Senior SOC Engineer | CyberSecurity Referent
HIGHTEKERSFreelance
août 2022 - juil. 2024
2 ans
Neuilly-sur-Seine, France
𝐀𝐬𝐬𝐢𝐠𝐧𝐦𝐞𝐧𝐭𝐬: 𝐈𝐍𝐂𝐄𝐑𝐓-𝐆𝐈𝐄 𝐀𝐏𝐑𝐈𝐋 𝟐𝟎𝟐𝟒 - 𝐉𝐔𝐋𝐘 𝟐𝟎𝟐𝟒 𝐈𝐍 𝐋𝐔𝐗𝐄𝐌𝐁𝐎𝐔𝐑𝐆 - Architecting, administering IBM QRadar Sec - Managing, investigating and responding to security Incidents - Advanced configuration of DSM (Parsing, Log Sources, CEP ), Reporting, App Exchange - Fine-tuning rules, Building-Block, flow and events-mapping 𝐄𝐒𝐁𝐀𝐍𝐐𝐔𝐄 𝐀𝐔𝐆𝐔𝐒𝐓 𝟐𝟎𝟐𝟐 - 𝐌𝐀𝐑𝐂𝐇 𝟐𝟎𝟐𝟒 𝐈𝐍 𝐅𝐑𝐀𝐍𝐂𝐄 - Design, planning and deployment of security solutions (SIEM, XDR, NDR, MFA) - Design, deploying and advanced configuration of Darktrace Detect in hybrid infrastructure. - Managing, investigating and responding to security Incidents - Optimizing threat detection models for autonomous response. - Design and deployment of Sophos mobile security strategies (MDM & MAM). - Audit and remediation of Active Directory (patching to reinforce security) - FortiGate firewall hardening (ANSSI standard), licensing and patching. - Securing VPN access and Cloud applications (MFA/CA, Certificate X509.) - IT risk analysis & anti-Ransomware protection for Windows systems - Web and systems application vulnerability management / Cyber Intelligence - Virtualisation of Sophos NDR / Windows and Linux servers. - Darktrace Integration with FortiGate-Sophos-VirtusTotal for advanced analysis and defense in depth - Backup management and automation through PowerShell scripts - Technical documentation and SOC reporting for the IT Department - Participation in the Security Committee to evaluate and deploy innovative technologies.
Senior CyberSecurity Analyst
Capgemini
oct. 2020 - juil. 2022
1 an 10 mois
92130 Issy-les-Moulineaux, France
Assignments: SERVIER GROUP JANUARY 2021 - JULY 2022 IN FRANCE BUPA NOVEMBER 2020 - DECEMBER 2020 IN UNITED KINGDOM
Infrastructure Security Consultant
Devoteam
janv. 2020 - juil. 2020
7 mois
92300 Levallois-Perret, France
Assignments: CARREFOUR GROUP JANUARY 2020 - JUNE 2020
Security Operations Engineer
Orange Cyberdefense
juil. 2019 - déc. 2019
6 mois
91300 Massy, France
Datacom Engineer
Huawei Technologies
oct. 2016 - janv. 2018
1 an 4 mois
Marcory/Abidjan
On assignments: MTN CÔTE D'IVOIRE OCTOBER 2016 - JANUARY 2018 • Upgrade from 1G to 10G of the MTN Côte d'Ivoire transmission network. • Replacement and Integration of ATN 950 & 910 Routers (52 ATNs) • IP Planning and IP/MPLS Backbone Optimization. • Migration of 2G/3G/4G and Business Services for MTN Côte d'Ivoire. • Monitoring of Network Aggregation Links. • Management of the transmission network database. • Configuration/Maintenance of ATN, NE40E, Switch, Firewall routers. Technologies: IP/MPLS, VPLS, PWE3, L2VPN, L3VPN, ISIS, OSPF, BGP, VLAN, VRRP ; Softwares : U2000, eNSP, Visio, Excel.
Oracle Application Express Developer
AMELIORIS SARL
août 2016 - oct. 2016
3 mois
Development of an APEX web-based application. Technologies: APEX 5, PL/SQL, Toad for Oracle, Datamodeler
Webmaster & Analyst Programmer
AKASI IVOIRE Sarl
juin 2016 - juil. 2016
2 mois
Riviera Palmeraie/Abidjan
Development of an Application for Human Ressources management -Technologies: Java SWING, RMI / MySQL
Pre-sales Intern Engineer (Solutions & Infrastructures)
Foqux sarl
févr. 2016 - juil. 2016
6 mois
Marcory/Abidjan
Functional studying of Cisco and Avaya network devices
Java EE Intern Engineer Developer
Ivoire Digital
avr. 2015 - oct. 2015
7 mois
Treichville/Abidjan
Developement of a Java Web-based application for mobile network (2G/3G/4G) monitoring. Technologies: JAXB, JPA , EJB, JSF, primefaces, MySQL Softwares: Netbeans, Eclipse
Formation
Télécom Paris
Mastère Spécialisé Cybersécurité et Cyberdéfense, Computer and Information Systems Security/Information Assurance
2018 - 2019
1 an 1 mois
Résultat : Mention Très Bien (A+)
Institut National Polytechnique Félix HOUPHOUËT-BOIGNY de Yamoussoukro (INP-HB) Officiel
Diplôme d'ingénieur, Ingénierie en Télécommunications et Réseaux
2010 - 2015
5 ans 1 mois
Résultat : Mention BIEN
Lycée Classique d'Abidjan Cocody
Baccalauréat C, Mathématiques, Physique et Chimie
2007 - 2010
3 ans 1 mois
Résultat : Mention BIEN
Licences et certifications
Configuring Security Services and Policies in Microsoft Azure
Délivré le : sept. 2024
IBM QRadar SIEM Foundation
Délivré le : avr. 2022
Defeating Anti-reverse Engineering and Anti-debugging Techniques
Délivré le : avr. 2022
AWS Foundations: Getting Started with the AWS Cloud Essentials
Délivré le : avr. 2022
IBM Resilient SOAR Foundations
Délivré le : févr. 2022
Preventing Threats Using Palo Alto Firewalls
Délivré le : mai 2021
Vulnerability Management with Qualys Cloud Platform
Délivré le : janv. 2021
Planning, Deploying, and Configuring Splunk Enterprise Security
Délivré le : déc. 2020
Tuning and Creating Correlation Searches in Splunk Enterprise Security
Délivré le : déc. 2020
Configuring Threat Intelligence in Splunk Enterprise Security
Délivré le : déc. 2020
Managing Splunk Enterprise Security Data and Dashboards
Délivré le : déc. 2020
ZCCA-IA Security Specialist
Délivré le : nov. 2020