Eric Grunwasser

• Advised large enterprises and public-sector organisations on audits and training in security and automation best practices, helping improve compliance with ANSSI standards.
• Provided level 3 support for Debian Linux and Red Hat Enterprise Linux / CentOS.
• Integrated Red Hat Satellite into complex environments, trained teams and coordinated with vendor support.
• Designed and deployed hardened OS baselines aligned with ANSSI BP-028 and DAT-NT28 guidance, improving the security of critical infrastructure.
• Industrialised deployments with Ansible, Terraform, GitLab CI/CD, Jenkins and Artifactory.
• Reduced hardened VM deployment time by 50% by optimising Terraform configurations, VMware templates and Ansible playbooks, and by using Mitogen.
• Analysed security incidents and vulnerabilities, then defined and managed remediation plans to reduce risk and improve system resilience.
• Deployed open-source alternatives to ChatGPT, including chatbots, APIs and Mistral AI models.
• Used AI-assisted code generation and review with Codex and Claude Code.

Clients: Docaposte, Lacoste, Enedis, Consotrust, the French Ministry of the Interior and confidential assignments.

• Led load and performance testing campaigns.
• Implemented a disaster recovery plan.
• Industrialised production deployments with Jenkins and Ansible.
• Redesigned and standardised test, pre-production and production environments.

• Implemented automated deployments and production release pipelines with Jenkins and Ansible for Enedis's ADAJE team.

• Managed incidents and changes across infrastructure distributed over three data centres.
• Designed a scalable platform to handle activity peaks, improving availability and reducing costs by 80%.
• Migrated hosting from NBS to OVH and deployed Hybris to production.
• Stack: Ansible, Proxmox, LXC, pfSense, Nginx, HAProxy, MaxScale and a Percona XtraDB cluster.