Guilherme Macedo
Lead Security Engineer at SUSE
Brazil
Summary
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RockstarGuilherme Macedo is a Lead Security Engineer at SUSE with nine years of hands-on experience designing secure cloud and serverless architectures, automating vulnerability assessment, and conducting digital forensics. Self-taught and highly independent, he blends DevSecOps practices with deep platform knowledge across GNU/Linux, OpenBSD, and AWS, and programs in Go, Python, C and Shell. At Rancher/SUSE he has contributed to flagship open-source projects like K3s and Rancher by hardening builds, improving image scanning (including VEX integration), and keeping dependencies and base images up to date to reduce supply-chain risk. He pairs ISO/NIST/OWASP-aligned methodology with practical tooling—Terraform, Ansible, Trivy, DefectDojo—and an operator’s eye for deployment and system-agent changes. Known for improving CI/CD security hygiene and pragmatic automation, he also quietly studies Haskell, reflecting a curiosity for new paradigms that inform his security-driven engineering.
9 years of coding experience
Github Skills (15)
dependency-management10
kubernetes10
automation10
docker10
automations10
go10
rancher10
devops10
k8s10
security-scan10
dockers10
cicd10
kubernetes-pods10
bash8
helm8
Programming languages (16)
Github contributions (5)
rancher/rancher
Jan 2022 - Jan 2023
Complete container management platform
Role in this project:
DevOps Engineer
DevOps EngineerContributions:277 reviews, 30 commits, 218 PRs in 1 year
Contributions summary:Guilherme primarily focused on updating dependencies and making infrastructure-related changes within the `rancher/rancher` repository, a complete container management platform. Their contributions included bumping versions of dependencies like Go, Docker, and Kubernetes-related libraries. They also updated the base images used by the project, and made changes related to Helm operations. Furthermore, the user modified the System Agent, suggesting involvement in the deployment and management aspects of the Rancher platform.
containersorchestrationdockerrancherkubernetes
k3s-io/k3s
Jun 2022 - Jan 2023
Lightweight Kubernetes
Role in this project:DevOps Engineer
DevOps EngineerContributions:20 reviews, 5 commits, 13 PRs in 6 months
Contributions summary:Guilherme primarily focused on improving the build and security aspects of the K3s project. Their contributions include automating updates using Updatecli, enhancing Trivy configuration for improved vulnerability scanning, and bumping the docker/distribution security version. Additionally, they integrated a VEX report from Rancher into the image scanning process to remove known false positives.
k3dcloudfoundryk8skuberneteskubelet
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