rogier van straten

writing

• Why our ECS task definitions are jsonnet, not Terraform2026-05-06

  Splitting resource provisioning from container lifecycle at 800 engineers, and why jsonnet — not CUE, not Dhall — ended up owning the task-definition template.

• Deploying only what changed in an NX monorepo2026-04-24

  A GitHub Action that uses the Deployments API as per-app deploy state, so nx affected diffs each app against its own last successful deploy.

• Finding affected Terraform projects in a monorepo2025-11-15

  A GitHub Action that walks module dependencies and changed files to tell CI which Terraform projects actually need to run.