Freelancer profile translated to English.
Back to original languageAbout Jean-Marc
🚀 Technical Expertise
Architect specializing in enterprise integration solutions and full-stack developer using the latest AI technologies to create cost-effective and high-performance solutions.
Industrialized Java Framework delivering business applications in 3 weeks vs. 6 months. Java 21/PostgreSQL/MinIO/Vault stack with autonomous Workers and AI. 50h package: production application, OVH infrastructure, documentation, 1-month warranty. Ideal for startups, incubators, replacing publisher software.
- Integration & API: WSO2, SymmetricDS, graphile, n8n
- **Modern Development**: Vibe-coding with Claude-code, Java, Python, JavaScript in production
- **Innovative Approach**: Harper Reed methodologies for rapid delivery
đź’ˇ Added Value
Customized solutions replacing expensive publisher software through integration and AI development expertise. Significant cost reduction with performance and reliability.
🎯 Mission
Support, management, and monitoring of your IT flows (synchronous/asynchronous) with pragmatic and economical solutions.
🏆 Experience
Manager/Founder ExtraFlow (Integration ESN)
- Managed 12 employees
- International projects: Australia, Singapore, Moscow, Belgium, France, Antilles, Canada
- Interconnections: SAP↔Magento2, SAP↔Pimcore, SalesForce, Microsoft ERP, Drupal
- WSO2 IoT Platform
- Custom business applications
đź“Š Skills
- Databases: Oracle, MariaDB, SQL Server, PostgreSQL, Sybase, InfluxDB
- Systems: SAP
- Dev: Java, Python, JavaScript
🎓 Services
- Socle Package: Business application in 3 weeks (50h)
- Audit and architecture modernization
- Custom integration solutions
- Legacy WSO2 support
Available for consulting and development missions.
English
Fluent
French
Native or bilingual
Can work on-site
Nantes (up to 50km)
Experience
- AmarenaAnalysis of price changes in an AS400 ERP for the integration of electronic labelsRETAIL (LARGE RETAILERS)September 2023 - January 2025 (1 year and 4 months)Paris, FranceAmarena, IT subsidiary of the CAFOM group, is present in all overseas departments and territories (DROM-COM), particularly in RĂ©union, the Antilles, and New Caledonia. The group is a concessionaire for several major brands, including But and Darty, which were the primary scope of the project.The information system is based on a legacy ERP running on IBM AS/400. Its architecture, inherited from the 1990s, made any publisher-side evolution complex and slow, especially to meet the urgent need to deploy electronic price labels.To circumvent this constraint, I designed and developed a program capable of analyzing the AS/400 transaction logs in real-time. It monitors the price, price history, and promotion tables for all AS/400 accounts corresponding to about twenty stores across several territories.The detected transactions are transformed, enriched, and then securely transmitted to a cloud infrastructure on Google Cloud Platform. Events are first published into an Apache Kafka-based streaming system, then persisted in a PostgreSQL database.From this database, automated workflows orchestrated by Apache Airflow detect price changes and automatically push them to the SES Imagotag system's electronic labels.The development phase for the entire solution took four months. Operational deployment required more time, mainly due to the implementation and harmonization of local infrastructures, particularly Wi-Fi networks in the various stores.This architecture effectively connected a legacy ERP to a modern ecosystem, while ensuring international reliability, responsiveness, and resilience.
- Confidentiel IOTCreation of the architecture for receiving IoT messagesTELECOMMUNICATIONSJanuary 2018 - June 2018 (6 months)Rennes, FranceDesign and implementation of the technical architecture for receiving/decoding IoT messages from LORA and SIGFOX networks.Project management for the development of restitution tools.Implementation of an API manager to allow third-party clients to retrieve their data.Creation of Dashboards on Grafana for monitoring measurements.
- ConfidentielConnecting POS (Point of Sale) with SAPRETAIL (LARGE RETAILERS)May 2017 - December 2017 (8 months)Paris, FranceFor various major retailers, connecting in-store cash register systems with SAP.• Downloading products and prices to cash registers (POS), transforming SAP Idocs into the language(s) expected by the POS.• Near real-time upload of sales receipts for integration into SAP (stock management, revenue verification, etc.).• Creation of real-time dashboards to monitor all actions.
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Education
- Computer EngineerESI-Supinfo1989
- SAP-BCSAP1998
Certifications
- ITIL V3ITIL2012