Freelancer profile translated to English.
Back to original languageAbout Johan
INFO 2024-02: I am now looking for a permanent position (CDI). This profile is no longer updated; see my LinkedIn profile.
Backend developer with experience in big data and devops. Initial training in algorithms, functional programming, and multithreading.
I enjoy complex subjects and can easily learn new technologies; almost all my assignments required me to learn a new language or framework.
I enjoy working in a team and with an efficiency-oriented approach.
French
Native or bilingual
English
Native or bilingual
German
Basic
Can work on-site
Sèvres (up to 20km), Paris (up to 10km)
Experience
- SNCF Connect & Tech - PARISDevelopment and Studies EngineerTRANSPORTATIONMay 2021 - February 2023 (1 year and 10 months)Puteaux, FranceTeam in charge of the Customer Account part of the website and the SNCF Connect app (several tens of millions of requests per day on the component). Maintenance of Java components and development of new Kotlin components for the transition from Oui.sncf to SNCF Connect. I also contributed occasionally to the Android/iOS application in Flutter.
- SNCF Connect & Tech - PARISDevelopment and Studies EngineerTRANSPORTATIONNovember 2019 - April 2021 (1 year and 6 months)Puteaux, FranceTeam responsible for the development and maintenance of the back-end (mainly Scala/Akka) of the SNCF agent control application. I participated in the design of REST APIs to transition from a "back for front" mode to a repository server mode aggregating travel and ticket control data from various sources and making them available to other clients such as automatic boarding gates.
- Ministère de l'intérieurConsultant via Sopra Steria ConsultingPUBLIC SECTORNovember 2018 - June 2019 (8 months)Paris, FranceI industrialized a functional data processing chain for French vehicle registration data for the Histovec website. Rewriting of Python and SQL processes for optimization, maintainability, evolution, and corrections. Definition of a delivery process. Creation of specifications and documentation.
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Education
- PhD, Computer ScienceUniversité Nice Sophia Antipolis2015Doctorat, Informatique
- Master's Degree, Computer ScienceÉcole Normale Supérieure Paris-Saclay2010Master Parisien de Recherche en Informatique (co-organisé par les Écoles Normales Supérieures Paris et Cachan, l'École Polytechnique et l'Université Paris 7)