JDFreelancer profile translated to English.
Back to original languageAbout Jean De Dieu
Passionate software engineer with over 6 years of experience in developing robust web and backend applications. Currently employed, I offer my high-level expertise in my free time.
In recent years, I have worked on large-scale projects for major clients and critical environments, including SSO authentication migration, setting up secure API architectures, and integrating generative AI (RAG, OpenAI API, etc.).
💡 My strengths:
-Backend development Java / Spring Boot 3+, microservices, security (JWT, OAuth2, SAML).
-Frontend Angular / React, API integration, enterprise design system.
-Cloud & DevOps: Azure, AWS, CI/CD, Docker.
-Applied Artificial Intelligence: integration of GPT models, RAG, data processing.
-Ability to work completely autonomously and deliver reliable, documented solutions.
🚀 I am looking for high-value-added missions where I can combine technical rigor and innovation, while contributing to product growth.
📍Based in France – available remotely or hybrid in Europe.
Daily rate adjustable according to project duration and complexity
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- CapgeminiSoftware EngineerDIGITAL AND ITMay 2022 - Today (4 years and 1 month)Territoire de Belfort, France**Client**: Capgemini (Innovation Project)**Role**: Full Stack Software & GenAI Engineer**Period**: June 2025 – Present**Mission**:-Propose the GenAI architecture for the project's augmented GPT responses (Retrieval-Augmented Generation) and its implementation.**Role**: Software Engineer**Client**: French Ministry - Public Sector**Period**: January 2023 – June 2025**Mission Utility**: Very complex web application that processes aid.**My Contribution**:-Evolve existing application modules (worked on 4 modules).-Adhere to functional specifications and technical design.-Update/add/delete reference data (PL/SQL) for existing modules.-Fix bug tickets in qualification, acceptance, and production.-Fix batch errors.-Create merge requests and correct them based on peer code reviews.-Create automated deployment procedures for tickets.-Functional testing with QA team.-Unit testing with JUnit and Mockito.**Client**: Globally recognized client in the energy sector - France**Role**: Software Engineer**Period**: June 2022 – January 2023**Mission Utility**: Manage employee travel by allowing them to book taxis to airports, TGV stations, and home.**My Autonomous Contribution**:-Implement the authentication migration of an existing Java EE application to Single Sign On (SSO) to enhance security.-Support User Acceptance Testing (UAT).-Support deployment to QA and Production.-Write technical documentation for the application.-Write and present knowledge transfer (KT) of the project at the end of the mission.
- WebPAKWeb Applications DeveloperRETAIL (SMALL BUSINESS)March 2021 - November 2021 (8 months)38200 Vienne, France**Mission**:-Integrate APIs to the Front-end.-Integrate products, prices, and tags.-Configure delivery methods.-Adapt the theme to the client's graphic charter.-Generate monthly store reports for client accounting.
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Education
- MIAGE - Master's Degree - IT Methods Applied to Business Management, Mention Bien (High Honors)University of Picardie Jules Verne, France2025Mention Bien – Note : 14,937 / 20 Le Master MIAGE est une formation française reconnue qui combine informatique avancée et gestion d’entreprise. Majeure : Informatique Mineure : Gestion et connaissance de l’entreprise Cours suivis dans le cadre du programme : -C107 : Processus stochastiques et simulation (Théorie des probabilités, chaînes de Markov, martingales, simulation d’événements discrets…) -C240 : Programmation orientée objet avancée -C218 : Projet de programmation -C353 : Conception et gestion de systèmes d’information -C214 : Réseaux et protocoles -B420 & B421 : Connaissance de l’entreprise -C410 : Jeux de simulation de gestion d’entreprise -C409 : Gestion financière et contrôle de gestion -C603 : Projet professionnel
- Master 1 Mathematics and Applied Computer ScienceUniversity Grenoble Alpes, France2020Principaux enseignements : -Algorithmes et structures de données -Génie logiciel et modélisation (UML, etc.) -Programmation orientée objet en Java (2 projets majeurs : robots et bataille navale) -Développement web (PHP/Laravel, HTML, CSS, JavaScript) -Systèmes d’exploitation et scripts (Unix, Windows, Perl, Bash) -Réseaux informatiques (LAN, MAN, WAN, GAN, VPN, NAT, NFS, DHCP, NAS, SMTP, LDAP…) -Mathématiques pour l’informatique (binaire, graphes, automates et expressions régulières) -Bases de données (algèbre relationnelle, modèles ER, normalisation 2NF/3NF, Merise, MySQL Workbench, SQL, NoSQL) -Interaction homme–machine (IHM) -Intelligence décisionnelle (Business Intelligence) -Droit de l’informatique et organisation de l’entreprise -Gestion de projet informatique (méthodologies Agile, cycle en V, etc.)
Certifications
- AWS CLF-C01 CertifiedAWS2023
- Azure AZ-900 CertifiedMicrosoft2022