You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Jean-Charles De LonguevilleJD

Jean-Charles De Longueville

Administrateur / Architecte système Linux // DevOp

€600/day
Bédoin, FR
15+ years

Average response time: 1 hour

About Jean-Charles

I’m bad at selling myself! I do better with machines. Let me resume my IT life...
  • Starting in 1980 with BASIC on TRS-80
  • Pascal UCSD on Apple ][
  • Fortran on mainframe CDC
  • Pascal and Prolog on IBM PC
  • Symbolic computation (REDUCE) on SUN workstation
  • C on Stratus (hardware fault tolerant)
  • Delphi (Pascal OO from Borland) on PC Windows (3.11 then 95)
  • Forté (OO, UML) on Windows NT
  • Data Scientist: Perl then Python on GNU/Linux
  • Medical telediagnosis first with Perl then PHP (HTTP, FTP, DICOM, ...)
  • Wi-Fi Mesh networks: TCP/IP, AODV, OLSR, ZRP, ...
  • System administration (data center)
  • Internal ERP with Python
  • System architecture: Bash and Python (Qemu-KVM, (x)NBD, CEPH, LXC, DHCP, Unbound, PXE, openLDAP, SSH, Chrony, OpenVSwitch)
  • Logging, monitoring, reporting and alerting
  • Home Automation (from hardware design to software) using 1-wire first, then Zigbee, RF, Wi-Fi, USB and Bluetooth with Bash and Python
  • adapt Apache (Python and C) to use it as generic character based stream server
  • write a Linux kernel module (C) for an ad-hoc serial device
  • optimization of source code (C++)
  • design, deploy and maintain a multi OS virtual desktop infrastructure
  • migration to the cloud: AWS, OVH, Azure, Digital Ocean, ...
  • design, deploy and maintain a fleet of photovoltaic controllers, both servers and embedded controllers: Salt, Ansible, GIT, Bash, Python, openVPN, Unbound, Shinken, Jabber, ...
  • HEMS (home energy monitoring system): MQTT, Kafka, Jira, Confluence, Gitlab, SonarQube, Jenkins, Timescale, Postgres, ...
  • embedded Linux: Buildroot, Yocto, Alpine on x86, x86_64, ARM, RPi...
  • platform design intended to be deployed in Cybersecurity class rooms (PXE, Podman, Buildbot, Git, Tcpdump, Wireshark, …)
  • helping start-up in scale-up phase (Gitlab-ci, k8s, ...)
Today, I’m looking after new missions or position. I would like to stay on the Mont Ventoux where I live for last 15 years…
  • English

    Fluent

  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Hellea srl
    Fondateur
    CONSULTING AND AUDITS
    August 1999 - Today (26 years and 10 months)
    Bruxelles, Belgium
    Started as hosting company (LAMP, email, ...) from Debian boxes, we ended building a private cloud with Alpine (CEPH, OVS, LVM, LXC, ...).
    We also worked on several project in embedded Linux (C, Python, bash).
    With Hellea we did a lot of missions, both long and short:
    • recover broken production servers
    • apache customization
    • C++ optimization
    • write telemedecine software
    • write FOSS Zone Routing Protocol
    • wi-fi mesh networks
    • custom made embedded router
    • virtual desktop infrastructure
    • fleet of edge device to control PV panels and batteries
    • GNU/Linux system administration
    • logging, monitoring and alerting
    • VoIP
    • orchestration of containers
    • CI/CD pipelines
    • DB clusters
    • platform design
    LAMP Linux datacenter embedded project leader team leader system architect
  • Université Libre de Bruxelles
    chercheur
    MEDICAL
    May 1997 - February 2006 (8 years and 10 months)
    Bruxelles, Belgium
    Contribution à l’étude de l’influence des champs électromagnétiques sur la consolidation des fractures (osseuses) (en collaboration avec Electrabel)
    Contribution à l’étude de l’influence de la gravité sur les régimes mécaniques osseux (en collaboration avec l’Agence Spatiale Européenne (ESA))
    Réalisation d’instrumentations virtuelles sur base de plateformes “embedded” (en collaboration avec Belecotec)
    embedded python perl GNU/Linux Data science
  • Générale de Banque
    Chef de service adjoint
    BANKING AND INSURANCE
    November 1993 - April 1997 (3 years and 6 months)
    Bruxelles, Belgium
    analyste programmeur au "canaux de distribution"​ (eBanking: G-Personnal Line; C)
    analyste programmeur détaché à "Isabel" (réseau tcp/ip privé interbancaire; Delphi)
    architecte du domaine des crédits (Forté)

    OOP

Recommendations

Be the first to recommend Jean-Charles

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • bac+5, Ingénieur Civil Physisien
    École Polytechnique - Université Libre de Bruxelles
    1990
    Utilisation du code REDUCE pour la recherche de solutions de symétries de l'équation de transport.
  • bac+7, Ingénieur en Automatique: spécialisation
    École Polytechnique - Université Libre de Bruxelles
    1992
    Emphasis on applied mathematics

Skill set

Categories