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Hello, I am Raphaël

Raphaël Cospérec

Senior Cloud Infrastructure Engineer at Voodoo

I am a Devops and Cloud Engineer. I come from a classic Network and Systems background. I’ve been working on AWS since 2019 and on Kubernetes since 2022. I enjoy smoothing the developers workflow to release to production while helping infrastructures to become more robust and easily manageable. Also, I make games.

Certified Kubernetes Administrator
AWS Solution Architect Professional
AWS Security Specialty
Rigor
Adaptability
Communication

Skills

AWS Cloud
AWS Cloud

Strong expertise on AWS Cloud, wether it is architecturing or operating on AWS Resources. Experience working directly with AWS’ Teams to ensure best practices are met for our projects
CI/CD
CI/CD

Experience building and maintaining CI pipelines on Github and Gitlab. Experience using and deploying resources to ArgoCD for K8S, or using Jenkins for classical apps
Networking
Networking

Strong knowledge and experience working both on premise enterprise networking and on cloud networking. Ability to architecture networks, maintain an troubleshoot issues. Experience on a wide range of VPN Protocols and providers
Kubernetes
Kubernetes

Capable of managing and deploying Kubernetes Clusters. Able to deploy, manage and troubleshoot Kubernetes applications.
Grafana
Grafana

Experience managing Grafana instance, datasources, dashboard, users. Experience integrating Prometheus/Thanos, Cloudwatch, Loki, InfluxDB datasources.
Prometheus/Thanos
Prometheus/Thanos

Capable of setup, configure Prometheus stack on kubernetes clusters. Experience working with Thanos for persistent and high availability of metrics
Helm
Helm

Experience using helm charts and adapting manifests to create helm charts
Terraform
Terraform

Able to write re-usable, clean terraform code as well as maintaining custom terraform modules.
ArgoCD
ArgoCD

Capable of creating ArgoCD applications, as well as managing an ArgoCD deployment, users and roles
Docker
Docker

Able to contenerize applications and handle associated resources and processes, such as registry management, build pipelines and such
Linux
Linux

Used to Debian based systems but experience with RHEL derivatives too, mainly Rocky Linux.
Git
Git

Experienced with git-based development. Experience using Github, Gitlab, Gitea, GOGS.

Experiences

1
Voodoo

Sept. 2024 - Present

Paris - Hybride

Voodoo is a global tech company that entertains the world through iconic apps and games

Senior Cloud Infrastructure Engineer - Ad Network

Sept. 2025 - Present

Responsibilities:
  • Help scaling up the Big Data infrastructure and onboard the newly formed data platform team (Spark, Kubernetes, Airflow)
  • Maintain and scale our observability stack through the scale up of our usage, while keeping cost very contained (Prometheus, Thanos, Grafana, Loki, Tempo)
  • Establish, enforce and participate in incident response protocols to improve reliability of our stack (Slack, Linear)
  • Enable teams to deliver RAG agentic projects in a secure and financiary viable manner (Claude, Arize Phoenix)
  • Help the teams transition from CircleCI to Github Actions
Senior Cloud Infrastructure Engineer - Core Team

Sept. 2024 - Sept. 2025

Responsibilities:
  • Design and implement availability, scalability, and performance plans for the services environments
  • Continual re-evaluation of existing stack and infrastructure to maintain optimal performance, availability and security
  • Develop security capabilities and encourage adoption of security best practices and architecture changes throughout the company via evangelism and education
  • Take ownership of automating infrastructure deployment and configuration, lead the creation of CI/CD pipelines for applications, and develop CI/CD best practices across the team
  • Perform development, automation, and deployment assignments without close supervision
  • Provide application development and cloud technology leadership, guidance, and assistance to other team members
  • Control costs and be able to propose and implement new solutions in coordination with dev teams
Dassault Systemes

Apr 2024 - Aug 2024

Paris Campus - Velizy Villacoublay - France

Dassault Systemes is a french multinational software company, specialized in providing industrial tooling, from 3D modelisation to simulation and factory management.

Site Reliability Engineer

Apr 2024 - Aug 2024

Responsibilities:
  • Collaborate with India and US based teams to ensure operational availability at all times
  • Setup new environnements for clients using 3DS’s tooling
  • Participate in the development of the operation’s team tooling and practices
2
3
Groupe Le Monde

Nov 2022 - Mar 2024

Full remote - France

The Groupe Le Monde is a french media group gathering several well known newspapers which all have online presence.

Site Reliability Engineer (Contractor)

Nov 2022 - Mar 2024

Responsibilities:
  • Referal for the SRE Team concerning AWS related matters during the migration from GCP to AWS
  • Responsible of choosing and implementing the Kubernetes cluster monitoring solution (prometheus/thanos/grafana)
  • Architect and create all the IAM roles and policy on AWS to allow integration of Google Workspace in AWS Organization
  • Responsible of implementing a logical backup solution for the AWS Aurora Postgresql instances
  • Referal for all networking issue concerning the AWS resources
  • Doing all the aforementioned tasks using IAC and CI/CD pipelines
Telerys Communication

Oct 2021 - Jul 2022

Courbevoie - France

Telerys Communication is a B2B company proving highly available internet access, telephony and hosting services

Sysops Engineer (Apprenticeship)

Oct 2021 - Jul 2022

Responsibilities:
  • Elaborate the company DRP by creating ansible playbooks for all operation’s application
  • Reduce technical debt on the VM fleet by automating patch application
  • Reduce exposure by scanning for vulnerabilities open to the public and automatically fixing it
  • Use InfluxDB and Grafana to setup metrics regarding the state of the VM fleet
4
5
mc2i

Aug 2019 - Aug 2021

Paris - France

mc2i is a French Consulting firm specialized in Project Management.

Cloud Engineer (Apprenticeship)

Aug 2019 - Aug 2021

Responsibilities:
  • Migrate the company file system to an hybrid cloud solutions (AWS Storage Gateway)
  • Administrate the IAM of the company, software and physical
  • Implement the pipelines to deploy in-house serverless applications on AWS
  • Setup an on-demand open-source file storage solution Nextcloud hosted on AWS to prevent shadow IT and the use of dropbox
  • Level 2 and 3 support for all IT department issues
  • Ensure the availability of all VPN tunnels between classical datacenters, on-site and cloud networks
  • Windows Server 2012 & 2016 Active Directory administration
MULTIMEDIA TECHNOLOGIE INFORMATIQUE

Sept 2017 - Jun 2019

Paris - France

Network and System Technician (Apprenticeship)

Sept 2017 - Jun 2019

Responsibilities:
  • Level 1 Support for all client, with remote or onsite interventions
  • Active Directoy administration
  • LAN network design and physical implementation
  • Firewall and nomad vpn configuration and assistance
6

Projects

Improved availability and security of homelab Internet Access
Improved availability and security of homelab Internet Access
Aug 2025 - Sept 2025

Added a 5G router to my home infrastructure and used wireguard to tunnel both WANs to a VPS. Redirect traffic to it instead of home IP. In case of incident, failover operates with no ip changes. Allows for cloud provider DDOS protection on top of it, and easy on-off switch.

infrastructure network
Gatherings
Gatherings
Gamedesigner - Developer Sept 2023 - Sept 2024

Gatherings is a 4 player party game developped on our (3 friends) free time. It is a bit of a rage game and will surely break some friendship. Développé sur Unreal Engine 5.

gamedev gamedev unrealengine
Details
Lobster Games
Lobster Games
Co-Founder Jan 2024 - Dec 2024

In order to publish our games as a team, we had to create a moral entity. We quickly had to learn company related law, accounting and US <-> EU tax regulations.

gamedev accounting entrepreneur
Automated maintenance of all selfhosted servers
Automated maintenance of all selfhosted servers
2022

Leveraging Ansible and Semaphore UI, automated the regular update of all servers, wether at home on on the cloud.

infrastructure network
Selfhosting
Selfhosting
2017 - Present

See all service provided by Google Workspace ? Well the idea is to host it all, link it to a central source of identity and use it for friends and family as well as for my own company.

infrastructure network virtualization
Deployment and customization of Hugo based websites
Deployment and customization of Hugo based websites
2023 - present

For family, myself, and friends, use of the Hugo framework to generate static websites to host on AWS with the classic S3 <-> Cloudfront combo.

infrastructure network virtualization