Freelancer profile translated to English.
Back to original languageAbout Jerome
Linux, cybersecurityexpert andDevSecOps**, I help organizations to **secure**, **make reliableandindustrialize**sensitive or critical environments**. I intervene fromaudittoproduction deploymentandoperationon subjects ofsystem and web hardening**, **CI/CD, operational automation, vulnerability management, monitoring, backups/disaster recoveryandLinux administration**. Particular expertise in the **certificate lifecycle (TLS/PKI)**, the operation of **application platformsand integration arounddatabases and APIs**. I also intervene on **targeted developments**: **internal tooling, custom scripts and automations, API integration, application patchesorsmall technical components**. Accustomed to contexts with high constraints of **availability, traceability, and compliance**, including on **sensitive data**. Possible entry point: **MonAideCyber diagnostic+ report +action plan**, then support for **implementationandremediation.
French
Native or bilingual
English
Fluent
Spanish
Basic
Can work on-site
Niort (up to 15km), Paris (up to 15km)
Experience
- Wild TurtlesLocal AI & Agentic Architecture – Workstation GPU, Virtualization, LLMOps, and LDAP AuthenticationSOFTWARE PUBLISHINGMay 2026 - June 2026 (1 month)Niort, FranceDesign and deployment of acomplete local and agentic AI infrastructure**: selection of a **GPU workstationsuitable for AI workloads, setup of avirtualizedinfrastructure with **GPU passthrough**, deployment of a **model server**, a **model routing service**, a **ChatGPT-like web interface**, **coding agents**, **messaging-connected agents**, and a **control server for visual AI**.The whole was integrated withcentralized LDAP authentication**, coordinated service configuration, access management, inter-component communication, functional testing, and documentation. Objective: to have a **controlled, high-performance, scalable, and usable local AI platformfordevelopment**, **assistance**, **automation**, and **human interactionuses.
- Prestataire de services de confiance qualifié eIDAS du groupe DocaposteSRE / DevSecOps PKI Engineer – Linux, CI/CD, Certificates, and HardeningSOFTWARE PUBLISHINGApril 2023 - December 2025 (2 years and 8 months)Paris, FranceWithin theCryptography SREteam, I managed thecontinuous operation**, **security**, and **industrializationof critical PKI and application platforms in GNU/Linux environments with high availability, traceability, and compliance requirements.My scope included:
- Continuous operation of PKI and Java application platforms: EJBCA, Tomcat, WildFly, upgrading Java 8 Oracle to Java 21 OpenJDK/JRE
- Linux Migration: CentOS to AlmaLinux/Oracle Linux, automating system updates and tracking via Jira ticketing
- Setting up GitLab CI/CD with QA, testing, security, SBOM, and secure backup phases
- Cyber threat intelligence and security remediation: CVE analysis in production and pre-development, handling false positives, system and application hardening, audit remediation
- Certificate lifecycle management: generation, conversion, and deployment of certificates (CER, PEM, etc.), TLS rotation, RSA to ECC migration, automated validation of CRLs
- Fixing the Java SDK for interfacing with the EJBCA REST/SOAP API and support for PKI usage
- Deployment and configuration of HSM components (Proteccio) and securing web cryptographic configurations
- Database administration and reliability: MariaDB cluster, PostgreSQL upgrades and backups, writing and executing SQL patches
- Observability and operations: logrotate, syslog, auditd, monitoring, log analysis, defining metrology probes, automated reporting, Grafana dashboards
- Operational automation using Bash, Ansible, cron, and Jira API, aiming to reduce manual interventions and improve repeatability
- Support for deploying PHP/Laravel applications, maintaining web components, deploying Go/Python services
- Technical documentation, diagrams, architecture proposals, and coordination with development, compliance, SOC, and operations teams
- Sages incWordPress Restoration After Compromise (Showcase Website) – Corrective MaintenanceVIDEO GAMES AND ANIMATIONDecember 2024 - December 2024Niort, FranceRestoration of acompromised WordPresssite (malicious actor) with the goal of returning it as close as possible to its original state. Intervention framed according to **backup availability and compromise level**: diagnosis, restoration, cleaning, redeployment, followed by maintenance catch-up (core/plugin/theme updates, hardening, and access rotation).Correction ofsecurity vulnerabilities identified in the themeused (patches/code modifications) to eliminate re-intrusion vectors and stabilize the site. Report of actions taken + recommendations for preventive maintenance.
Reviews
Ludovic
GROUPE SCP
Reviewed on 9/1/2022
We entrusted a mission to Jérôme who proved to be very professional and attentive.
We highly recommend his WEB Development services.
Thank you again,
See you soon
Dimitri
Beyond Gravity
Reviewed on 3/4/2020
Very satisfied with this start to our collaboration.
Jérôme is very responsive, competent, and professional. He regularly challenges the current solution to propose alternatives, thanks to his in-depth technical skills in many areas (Java, networks, among others), as well as a strong analytical mind.
He works with Estelle, who has been the main person developing this Java application so far, and we can say it's very successful: faithful to the specifications and mockups, perfectly functional from the start, all in complete autonomy. Nothing to say, I recommend.
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Education
- Master in Computer Science, Mathematics, Multimedia, and Telecommunications, Specialization in Computer ScienceUniversity of Poitiers, France2016Formation en informatique traitant du développement de logiciels et d'applications web, et de la gestion de systèmes d’information. Première année de Master effectuée à l'université de Moncton, Canada. Contenu : - Ingénierie des données - Reconnaissance de formes (réseau de neurones, etc...) - Architectures Avancées pour le web N-Tiers (java, REST SOAP, docker) - Système temps Réel (c, xml, spécification et validation) - Systèmes experts : Clips - Programmation orientée objet : C++ - Architecture Matérielle - Base de Donnée : sql , PL / SQL - Système d'exploitation : C , GNU/Linux - Conception : UML ( VisualParadigm ), MVC2, singleton, factory - Algorithmie - Automates - Gestion de Projet - Économie - Anglais
- University Diploma: Skills Passport CreationUniversity of Poitiers, France2016Formation d'accompagnement à la création d'activité et à l’insertion professionnelle, en lien avec le statut d'étudiant-entrepreneur. Contenu : - Étude de marché - Méthodologie d’organisation - Stratégie Commerciale - Veille Stratégique - Innovation - Structure juridique et fiscalité d’entreprise - Économie sociale et solidaire - Compétences juridiques - Comptabilité et gestion - Étude prévisionnelle - Analyse financière - Communication - Utilisation des outils des internets - Recherche de financement - Constitution et maintien d’un réseau - Gestion des ressources humaines
Certifications
- Master's degree in Computer ScienceUniversity of Poitiers2016
- Bachelor's Degree in Computer ScienceUniversity of Poitiers2014