Manuel Guarinos
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Writing

Writing on cloud engineering and SRE — things that took iterations to get right, and a few that just worked.

GitHub Actions to AWS without stored credentials: OIDC role federation
awsdevopssecurity

GitHub Actions to AWS without stored credentials: OIDC role federation

Replace long-lived AWS credentials in GitHub secrets with short-lived tokens using OIDC federation. Covers trust policy setup, per-branch and per-environment scoping, multi-environment role design, and...

Apr 20, 2026 12 min read
The Kubernetes Operator Pattern: teaching your cluster to manage anything
kubernetesinfrastructure

The Kubernetes Operator Pattern: teaching your cluster to manage anything

Operators extend Kubernetes' reconciliation model beyond pods and services to anything - DNS records, database users, cloud resources. Here's the mental model, the mechanics, and...

Apr 15, 2026 11 min read Access the code on GitHub
Streamline: a serverless live streaming platform with 4-hour DVR on AWS
awsserverlessstreaming

Streamline: a serverless live streaming platform with 4-hour DVR on AWS

A fully serverless live streaming platform built on AWS IVS, CloudFront, and Lambda — with a built-in 4-hour DVR window, no recording bucket, and a...

Apr 13, 2026 6 min read Access the code on GitHub

© 2026 Manuel Guarinos

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