Antoine Barthelemy

Kubernetes & Cloud Specialist

Switzerland | antoine@linux.com | github.com/Ant0wan

Summary

I thrive in environments where talented people collaborate respectfully, focusing on the best technical outcome rather than personal agendas. I’m looking for a long-term home with a team that shares this principle.

Kubernetes: All certifications and 6 years of at-scale experience (cloud & on-premise)
Infrastructure as Code: 6 years of at-scale experience (cloud & bare-metal)
Application Build & Security: 6 years of experience
Database Cluster Management: 2 years of experience with high-throughput systems

Professional Experience

Swan

Platform Engineer September 2025 to December 2025 Remote, France
  • Worked short-term within a team of 4 platform engineers within a 300-person company undergoing significant restructuring
  • Improved base images, eliminating all CVEs and reducing size (~1.5GB to ~200MB) using distroless techniques
  • Cut Kubernetes node disk usage by approximately 60%
  • Migrated pipelines from GitLab CI to GitHub CI
  • Refactored critical Terraform IaC modules for GitHub, Vault, and IAM avoiding drift
  • Developed an internal CLI tool to automate environment setup and streamline developer onboarding
Technologies: AWS, Kubernetes, Terraform, Terragrunt, GitHub Actions, Wiz

PrestaShop

Site Reliability Engineer December 2024 to September 2025 Remote, France
  • Led the strategic planning and execution of the infrastructure security roadmap
  • Promoted DevOps best practices, focusing on secure deployments and architecture
  • Improved monitoring with OpenTelemetry
  • Orchestrated application migration to a new infrastructure, improving scalability, security, and reduced costs
  • Optimized CI/CD pipelines and developed an open-source Go tool for Terraform/Terragrunt lock and module versioning
  • Migrated Terraform to Terragrunt, modularizing IaC
Technologies: GCP, Go, Kubernetes, Terraform, Terragrunt, GitHub Actions, OpenTelemetry, Falco, Trivy, Wiz

Hublo

Site Reliability Engineer April 2024 to September 2024 Remote, France
  • Worked alongside two SREs within a 30-member engineering team
  • Set up and scaled Kubernetes clusters on AWS using Pulumi for staging and production environments, followed by the migration of the ECS cluster to Kubernetes namespaces
  • Deployed an SFTP server, a CRM, several web applications, and data applications using Pulumi and Helm, and improved build times for legacy applications
  • Streamlined and secured networking in our AWS accounts by implementing appropriate security groups, peerings, and TLS. This also reduced costs and made the infrastructure easier to manage
  • Automated the deployment of Snowflake and Metabase using Terraform, created Helm charts, and established a CI/CD pipeline for the data engineering team
  • Deployed CDNs for the frontend applications
  • Configured a Network Load Balancer to handle both layer 4 and layer 7 traffic for services
  • Contributed to open-source efforts, including the sftpgo/helm-chart
Technologies: AWS, ArgoCD, Datadog, GitHub Actions, Helm, Kubernetes, Pulumi, Postgresql

Freelance (6Wind, Lengow)

Platform Engineer July 2023 to November 2023 Remote, France
  • 6Wind a Cisco competitor (8 weeks), Contributed to a testing framework in Python and C to assess the load and functionality of a router OS. Executed tests on-premise using Ansible and KVM for durations of up to 8 hours
  • Lengow a B2B marketplace feed management company (4 weeks), I co-designed a scalable AWS cloud infrastructure to support feature deployment, set up CI/CD services, and automated software release processes
  • Additionally, I contributed to open-source projects like OpenTofu during this period
Technologies: AWS, Ansible, C, Github Actions, Kubernetes, KVM, Python, Terraform

Contentsquare

Platform Engineer April 2022 to June 2023 Remote, France
  • As the most junior member of a 20+ platform engineering team in a 300+ person R&D department, I helped deploy and maintain key infrastructure technologies, including Kubernetes, Ansible, Terraform, Spinnaker, and GitHub Actions
  • Migrated numerous Jenkins pipelines to GitHub Action workflows
  • Led the refactoring of the Clickhouse Ansible deployment from Python 2.7 to Python 3.8 and built Ansible collections
  • Created a Terraform provider for Pritunl VPN
  • Worked on a proof of concept to implement Spinnaker, facilitating git-based workflows for creating and updating Managed Delivery configurations
  • Developed a Python wrapper for Netflix Dispatch to enable quick deployment and scaling within our infrastructure as part of a proof of concept, serving as a replacement for PagerDuty
  • Took an active role in managing multi-cloud deployments across Azure and AWS, optimizing cloud resources to ensure high availability
  • Worked alongside developers to support feature rollouts, troubleshoot issues, and keep services running smoothly
  • Contributed to several open-source projects, including Dispatch Netflix, Kibana Elasticsearch, Pritunl, Tfam, and Tfexe
Technologies: Ansible, AWS, Azure, Datadog, Github Actions, Go, Grafana, Helm, Jenkins, Kubernetes, PagerDuty, Prometheus, Python, Terraform, Vault

SII

DevOps Engineer June 2021 to January 2022 Rennes, France
  • As the only DevOps engineer supporting a team of 12 developers, I managed four GKE clusters (about 5 nodes each), handling ~300 simultaneous users and maintaining their CI/CD pipelines for Brittany Ferries
  • Led the migration of four terraformed GKE clusters to new infrastructure, incorporating FluxCD, ConfigConnector, Istio, Google KMS, and Sops
Technologies: FluxCD, GCP, GitlabCI, Istio, Kubernetes, Kustomize, SOPS, Terraform

CIL

DevOps Engineer July 2020 to May 2021 Lamballe, France
  • From intern to employee, as part of a team of 2 system administrators and 11 developers within an in-house data-center
  • Deployed a Kubernetes cluster on bare metal servers with HAProxy, Heartbeat and MetalLB using Ansible
  • Upgraded VMware vSphere on all servers to enable Kubernetes Datastore support via VMware CNS API and CSI driver integration
  • Automated OSRM map builds, containerizing and deploying them on Kubernetes for scalability
  • Deployed 3CX VoIP, maintained all Linux virtual machines and their associated services
  • Contributed to open-source projects, including Rust-lang and Mattermost
Technologies: Ansible, Bash, Centreon, Docker, Kubernetes, Linux, Rust, SQL, VMWare

Certifications

Education

42 Paris

Certificate of Architect in Digital Technologies November 2018 to June 2020

ESSEC

Bachelor of Business Administration September 2014 to February 2017