Guilhem Castillo
Cloud Security Engineering - Principal Advisor at Caisse de dépôt et placement du Québec (CDPQ)
Greater Montreal Metropolitan Area Canada
Summary
👤
Senior🎓
Top SchoolGuilhem Castillo is a cloud security and AWS specialist with 10 years of experience modernizing infrastructure for large, regulated organizations across finance and technology. Currently a Principal Advisor at CDPQ, he has secured and governed 200+ AWS accounts by building IaC-driven security frameworks and serverless automation that enforce continuous compliance. His background blends deep hands-on skills—Terraform, Kubernetes, Ansible, Packer—and platform governance with a strong track record in migrations, training, and embedding security into DevOps practices. Notable for bringing enterprise-grade controls to highly regulated environments (Deutsche Börse, Barclays, National Bank), he pairs practitioner-level troubleshooting from his Linux/UNIX roots with strategic risk reduction. Colleagues rely on him for pragmatic, repeatable cloud patterns that scale across teams and accounts.
10 years of coding experience
10 years of employment as a software developer
Secondary school Comptabilité, Secondary school Comptabilité at Lycée Nevers
French, English
Github Skills (50)
feather-icons10
dashboard9
sui9
docker9
flame9
aws8
aws-fargate7
configurations7
terraform-module7
irc7
gitlab6
atlantis6
react6
terraform6
spec6
Programming languages (7)
Github contributions (5)
KasteM34/github-oidc-terraform
Jul 2022 - Dec 2022
GitHub Action to deploy to AWS with Terraform
Contributions:8 commits, 8 PRs, 6 pushes in 5 months
terraformterraform-moduleaws
KasteM34/unraid-templates
Jun 2022 - Jul 2023
Contributions:4 PRs, 8 pushes, 3 branches in 1 year
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