Freelancer profile translated to English.
Back to original languageAbout Jean
Developer for over 15 years, I have focused on improving my practices and sharing my knowledge, often working on legacy applications. I enjoy working on an application that already brings value to its users, and contributing to its long-term sustainability after my departure, with a team that can manage it.
English
Native or bilingual
German
Conversational
Can work on-site
Nantes (up to 50km)
Experience
- SolinaLead developerAGRICULTUREApril 2020 - March 2021 (11 months)- Taking over and migrating a legacy system from PowerBuilder to dotNetCore / AngularJS on Azure- Coaching developers- Implementing an event-based architecture- Creating a testing framework in PowerBuilder- Creating an HTTP call harness in PowerBuilder- Automating deployments, database migrations
- SNCF Gare & ConnexionLead DeveloperLOGISTICS AND SUPPLY CHAINMay 2021 - Today (5 years and 1 month)- Securing and migrating a Java / ERP legacy system with a cloud trajectory- 2 Angular applications, one Android application (migration to Android Enterprise) and 3 REST APIs- Coaching new developers- Deploying tests, continuous integration
- FircosoftSoftware crafterSOFTWARE PUBLISHINGJune 2017 - April 2020 (2 years and 10 months)- Securing and evolving a legacy system coded in Claire / C / C++ using Oracle and SQLServer- Creating an integration testing harness and a set of unit tests- Development in Claire, C, Java- Working in a self-organizing remote team, knowledge sharing, welcoming and training new developers
Reviews
Vincent
Pôle circulation de la donnée
Several weeks project
-
Reviewed on 11/18/2025
Jean did a remarkable job in reducing the technical debt of a critical tool for the State. His expertise in Java and technical architecture in general, his rigor and his professionalism were highly appreciated throughout the mission. Always serious, reliable and very friendly, Jean is a real asset to a team. I highly recommend him.
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Education
- Master of Distributed Software ArchitecturesUniversity of Nantes2005
- Computer Engineering, Software and Networks. Specialization in Data ManagementPolytech'Nantes2005