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Guillaume SerenGS

Guillaume Seren

DevOps Gnu/Linux Freelance

€850/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

First backend developer j2ee, I gradually turned to system administration and cloud (AWS / OpenStack), image building (packer), deployments (terraform), provisioning (ansible), packaging (deb / rpm), CI/CD pipeline creation, pair programming, functional and load testing, scripting and tool creation (bash / python), agile methods,
  • 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
    – Exploitation / SaaS team. – Infrastructure change management with ansible. – Development of ansible roles and playbooks. – Support for developers for CI/CD integration. – Debugging and production monitoring (on-call).
  • DevOps, Orange-HebEx,
    DevOps
    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 system provisioning. – Create ansible playbooks for application provisioning. – Development of a script to test multipath (bash). – Development of a cluster vm for docker swarm testing with Ansible / Vagrant. – Create docker image specialized for CI/CD with gitlab-ci. – Development of script for automated packaging RPM (on top of MOCK). – Backport / maintenance patches 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 in RPM (snimpy, colordiff, etc). – Development script 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. – Development of 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). – development of ansible playbook for openstack smoke tests. – creation of base images centos7, ubuntu14, ubuntu16 (packer / virtualbox|qemu) for openstack. – creation of parsing scripts for snmp scan to ansible inventory (ini / python). – Tech Environment • - OS: Gentoo Ubuntu LTS Server CentOS 7. • - Cloud: OpenStack • - IDE 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 on a physical server (Proxmox). – Maintain projects and follow-up (Git, GitLab). – Technical Environment: • - OS: Gentoo / Debian 8. • - Cloud: AWS • - Databases: Mysql 5.5. • - IDE: Vim, Netbeans, Mysql Workbench. • - Technologies: PHP, JS, SQL, Py, Git, Bash.

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Skill set

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