MARC CENON

SRE | Cloud Architect | DevOps

About Me

SRE & Cloud Architect with 6+ years designing and operating infrastructure at scale. Specialized in Kubernetes, observability, and cost optimization across AWS / OVH / Scaleway.

Cloud Providers

  • AWS - AZURE - GCP - Scaleway - OVHcloud

IaC & Automation

  • Ansible - Terraform - Pulumi - n8n
  • Packer - Vagrant - SaltStack - Cloud-Init

CI/CD

  • Gitlab CI - Github Actions - ArgoCD - Flux

AI / MLOps

  • Ollama - LLM infrastructure hosting (GPU nodes, model serving)
  • AI coding assistants integration in CI/CD pipelines

Kubernetes & Docker

  • Helm - Kustomize - Istio - Calico - Cilium
  • Traefik - Nginx Ingress Controller - Gateway API
  • Rook-Ceph - Dockerfile - Docker Compose
  • KEDA - Karpenter - Velero

Observability

  • OpenTelemetry - ELK Stack - OpenSearch - Fluentbit
  • Grafana - Prometheus - Thanos - Loki
  • Jaeger - Tempo - Promtail - Alertmanager - Datadog

SRE Practices & FinOps

  • SLO / SLI / Error Budget definition and ownership
  • Incident management - PagerDuty - Opsgenie
  • On-call rotation management - Post-mortem / Blameless RCA
  • OpenCost - Kubecost

Scripting & Databases

  • Bash - Python - Lua - Ruby
  • MySQL - MariaDB - PostgreSQL - ProxySQL

Linux OS & Security

  • Debian - Ubuntu - Arch - Fedora - RedHat - Proxmox
  • Wazuh - Vault - Trivy - Sops - External Secrets Operator

Web & Misc

  • Apache - Nginx - HAProxy - Git - RabbitMQ - Redis

Certifications

Certs

Experiences

DevOps - SRE

FDJ United - La Française des jeux
09/2023 - Present
  • Designed and operated multi-region and multi-provider infrastructure for payment-critical POS systems serving over tens of thousands of restaurants across France
  • Led Kubernetes platform engineering operations
  • Implemented GitOps with ArgoCD across 50+ microservices
  • Defined and owned SLOs / SLIs and error budgets for all critical payment services
  • Reduced infrastructure costs by adopting FinOps best practices

DevOps - SRE

Claranet
09/2022 - 09/2023
  • Managed multi-client cloud infrastructure across AWS and GCP
  • Designed and deployed Terraform modules and Ansible playbooks
  • Implemented centralized observability stack (Prometheus, Grafana, Alertmanager)
  • Contributed to on-call rotation and led post-mortem processes

DevOps - SRE

Cshield - Baleen (Cdiscount)
07/2022 - 09/2022
  • Automated infrastructure provisioning with Terraform and Ansible
  • Automated vulnerability scanning in CI/CD pipelines
  • Authored incident response playbooks and runbook documentation

DevOps

CGI
09/2020 - 07/2022
  • Deployed and maintained cloud infrastructures for multiple public clients
  • Containerized legacy applications with Docker and migrated workloads to Kubernetes
  • Automated infrastructure provisioning with Terraform and Ansible
  • Set up centralized logging with ELK Stack and real-time monitoring with Prometheus and Grafana

Wine Broker - IT Technician / Helpdesk

Bureau Feret
2018 - 2020
  • Provided IT support and helpdesk services for internal teams
  • Managed wine brokerage operations and client relationships

Brand Ambassador - Digital communication

Chateau Marquis de Terme
2015 - 2018
  • Represented the estate at international wine fairs and events
  • Managed social media presence and digital communication strategy

IT Technician / Helpdesk

Equaline
2012 - 2014
  • Provided technical support and hardware/software troubleshooting for end users
  • Managed workstation deployments and network maintenance

Customer Support Consultant

Teleperformance
2009 - 2012
  • Provided customer support and technical troubleshooting across multiple product lines

Education

IT Bachelor (Licence Profesionnelle ADSILLH)

University of Bordeaux
System Administration and Platform Engineering
2020

WSET Level 3

WSET School of London
Sommelier Diploma (Bac +3)
2017

Applied Foreign Languages English / Japanese Bachelor (Licence LEA)

Bordeaux University
Cultural exchange with Tokyo University
2013

Hobbies

Trail running
Canicross
Travels
Cooking
DIY