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Guillaume SerenGS

Guillaume Seren

DevOps Gnu/Linux Freelance

€850/day
Paris, FR
8-15 years

Average response time: 1 hour

About Guillaume

D'abord développeur backend j2ee, je me suis tourné progressivement vers le système,
et le cloud (AWS / OpenStack), construction d'images (packer), déploiements (terraform), provisionning (ansible), packaging (deb / rpm), creation de pipeline CI/CD, pair
programming, tests fonctionnel et de charges, scripting et création d'outils
(bash / python), methodes agiles
  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Basic

Remote only
Primarily works remotely

Experience

  • Cegid-ACA,
    DevOps
    January 2021 - January 2023 (2 years)
    Paris, France
    – Équipe exploit / saas. – Pilotage des changements infra avec ansible. – Développent de role et playbook ansible. – Assistance dev pour integration ci/cd. – Debug et suivi production (astreinte).
  • DevOps, Orange-HebEx,
    DevOps, Display-Interactive
    January 2016 - January 2017 (1 year)
    Bagnolet, France
    – Work with SCRUM and jira.
    – Create prototype of vm with Vagrant / libvirt|virtualbox / Ansible.
    – Create ansible role with Molecule tests.
    – Create ansible role freeradius.
    – Create ansible role ldap (with proxy support).
    – Create ansible role systemd-network (+yaml net config).
    – Create ansible role zsh-prompt.
    – Create ansible playbooks for sytem provisioning.
    – Create ansible playbooks for application provisioning.
    – Dev of a script to test multipath (bash).
    – Dev of cluster vm for docker swarm testing with Ansible / Vagrant.
    – Create docker image specialised for ci/cd with gitlab-ci.
    – Dev of script for automatised packaging RPM (on top of MOCK).
    – Backport / maintenance patchs for keepalived (C).
    – Packaging / maintenance of management script for keepalived (bash / python / rcs).
    – Packaging / maintenance of management script for haproxy (bash / python / rcs).
    – Packaging missing software for centos7 en RPM (snimpy, colordiff, etc).
    – Dev script of to manage IRQ of NIC on specific core of a CPU (bash / python / irqbalance).
    – Benchmark linux firewall, depending on number of IRQ/Core with several NIC / driver. – Dev ansible playbook to test openstack platform.
    – Create base image for centos7, ubuntu14, ubuntu16 (packer / virtualbox|qemu).
    – Create parsing script to convert scan snmp to ansible inventory (ini / python).
    – dev de playbook ansible de smoke test pour openstack.
    – création d'images de base centos7, ubuntu14, ubuntu16 (packer / virtualbox|qemu) pour openstack.
    – création de script de parsing de scan snmp vers inventaire ansible (ini / python).
    – Environnement Tech
    • - OS : Gentoo Ubuntu LTS Server CentOS 7.
    • - Cloud : OpenStack
    • - EDI NeoVim.
    • - Python, Git, Ansible, Molecule haproxy,
    Ansible Docker NOC
  • WedZem, WedZem.com,
    DevOps
    January 2015 - January 2016 (1 year)
    Paris, France
    – Refactoring of a WordPress's template (less, Bootstrap). – Setup of a container's web stack (docker-compose). – Admin of dev/test/prod vm in a physical server (Proxmox). – Maintain projects and followup (Git, GitLab). – Technical Environnement :
    • - OS : Gentoo / Debian 8.
    • - Cloud : AWS
    • - Bases de données : Mysql 5.5.
    • - EDI : Vim, Netbeans, Mysql Workbench.
    • - Technologies : PHP, JS, SQL, Py, Git, Bash.

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