Freelancer profile translated to English.

Description

Senior consultant with 15+ years of experience in Linux, DevOps, and Kubernetes, I intervene in targeted and effective missions, complementing existing teams.

Specializing in production environments, I help you quickly resolve critical issues, make your platform reliable, and implement sustainable best practices.

What I do concretely

Kubernetes Troubleshooting: failing pods, CrashLoopBackOff, network issues, Ingress, TLS, DNS

Storage & Persistence: PV/PVC, CSI, performance, volume-related incidents

Kubernetes / DevOps Audit: security, resilience, observability, technical debt

Linux Production: hardening, performance, system incidents, automation

Setup or Improvement: monitoring, alerting, backups, simple CI/CD

My way of working

Short and defined interventions (audit, diagnosis, fixes)

Clear deliverables: report, actionable recommendations, remediation plan

Pragmatic approach, focused on rapid resolution and real impact

Simple communication, without unnecessary jargon

Usual contexts

SMEs / growing startups

Overwhelmed DevOps teams

Kubernetes production platforms

Need for an external senior perspective

Available for ad-hoc missions, audits, expert support, or technical guidance.

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

PORTIFY
Systems Engineer
June 2024 - Today (2 years)
Paris, France
• Collaboration with clients to analyze their infrastructure and adapt solutions to their environment, whether deployed in the cloud, on-premise, or offline (air-gapped), while ensuring efficient implementation.
• Complete implementation of a CI/CD pipeline from scratch for deployment, update management, and automation of daily operations. Integration of Jenkins, Ansible AWX, Terraform, Docker, K8s, DockerHub, and Vault to orchestrate workflows, secure secrets, and industrialize delivery processes.
• Continuous automation of application deployments based on client needs through an Infrastructure as Code (IaC) approach. Implementation of Terraform and Ansible for provisioning and configuration, Shell and Jenkins for pipeline orchestration, and Git for version tracking.
• In-depth technical investigations on containerized environments (Docker Swarm / Kubernetes) — analysis of malfunctions, optimization of deployments.
• Study of migrating a complex solution running as a Docker Swarm stack to Kubernetes.
• Upgrade of Kubernetes clusters and management of external ETCD.
• Application of ITIL best practices for IT service management, including incident, change, and request management.
• Technological watch
• Monitoring and management of applications installed in the Cloud
• Ensuring operational availability through technical on-call duty, with rapid intervention on critical incidents and support to teams outside of business hours.
Jenkins Terraform Kubernetes Docker Linux
Monext (Freelance)
Systems Engineer
October 2023 - May 2024 (7 months)
• Definition of Kubernetes cluster architecture for various company teams and implementation on VMware.
• Support for development teams in setting up the CI/CD pipeline.
• Migration of CentOS infrastructure to RHEL.
• Automation of patch management via Ansible Tower.
• Configuration of Red Hat Satellite.
• Development of a web application to automate daily team tasks.
SNCF (Freelance)
Systems Engineer
June 2016 - October 2023 (7 years and 4 months)
• Deployment of connected/disconnected Kubernetes clusters with integration of tools like ArgoCD, Velero, MinIO, and Harbor, to automate deployments, enhance resilience, and ensure data backup.
• Administration of CI/CD platforms: Jenkins, Ansible AWX, GitLab, and supervision of Kubernetes environments.
• Migration and optimization of applications to Kubernetes, with cluster upgrades to ensure performance and reliability.
• Maintenance and operation of containerized infrastructures, with task automation via Ansible, Shell, and CI/CD pipelines.
• Infrastructure as Code (IaC): provisioning of VMware and cloud environments with Terraform/CloudFormation, and automated configuration with Ansible.
• Design of resilient architectures, including the implementation of Disaster Recovery Plans (DRP).
• Installation and administration of OpenShift, managing RBAC, operators, network policies, application deployments, and incident resolution.
• Conducting Proofs of Concept (POC) on OpenStack to evaluate and validate cloud solutions.
• Management of a fleet of 8000 Unix/Linux servers in hybrid environments (cloud and on-premise).
• Level 3 support for Linux, Unix, storage, and Kubernetes environments.
• P2V and V2V migrations, firmware update management, and patching.
• Development of internal tools in Node.js/JavaScript for daily operational management.
• Migration of application servers to the cloud for modernization purposes.
• Administration of technical infrastructures: VMs (Oracle OVM, VMware), Solaris clusters, Solaris zones, and virtualization solutions.