Linux Technical Lead

Remote work policy : 2-3 days on-site per week

Industry : IT / System Infrastructure

Project Duration : 6 months

About the Company :

Our client is a leading provider of digital trust services, offering secure and innovative IT solutions. They specialize in building and maintaining complex infrastructures, ensuring high availability, scalability, and security across multiple platforms. The company fosters a dynamic work environment, with a focus on continuous learning and technological advancement.

Job Description :

We are looking for a Linux System Infrastructure Tech Lead to join our client's team for a 6-month project based in either Paris or Aix-en-Provence, France. This freelance role involves overseeing and managing Linux system infrastructures within a diverse and evolving technical environment. The candidate will act as a technical lead, ensuring system stability, security, and efficiency while also contributing to automation and cloud-based initiatives.

Key Responsibilities :

• Provide Level 3 technical support and serve as a key technical reference within the team.
• Deploy and manage high-value infrastructure projects.
• Define standards and maintain internal policies related to system administration.
• Implement operational procedures to enhance efficiency.
• Act as an interface between architects and external vendors.
• Conduct technology research and homologation to assess new solutions.
• Develop and enhance automation tools using Ansible, Terraform, or similar technologies.
• Lead internal projects, including system migrations, upgrades, and large-scale deployments.

Required Skills & Qualifications :

• Minimum 10 years of experience as a Linux System Administrator (Ubuntu / Debian or RedHat / Fedora).
• Homologation & Validation : Experience testing and validating new infrastructure versions (e.g., VMware 8) for compatibility.
• Strong expertise in automation tools like Ansible, Terraform, or Packer for system configuration and VM management.
• Experience in hardening Linux systems for security and compliance.
• Deep understanding of open-source technologies and Linux-based IT environments.
• Familiarity with container management (Docker, Kubernetes, or OpenShift) is a plus.
• Proven ability to lead internal IT projects such as migrations, upgrades, and mass deployments.
• Strong analytical skills with the ability to troubleshoot complex technical issues.
• Excellent organizational and communication skills, with the ability to work both independently and within a team.

Technical Environment :

• 15,000 physical and virtual servers primarily on Linux (RHEL, CentOS, Ubuntu)
• Automation with Ansible, OpenShift, OpenNebula, ManageIQ, GIT
• Infrastructure management with Katello Foreman, Lansweeper, vRealize
• Storage solutions including NetApp, Pure Storage, Huawei, EMC
• Middleware expertise in Tomcat, JBoss, Apache, Nginx, DRBD, HA, Keepalive
• Database management with MySQL, MariaDB, PostgreSQL, MongoDB, ElasticSearch
• Monitoring and supervision using Centreon, Zabbix