Reinier Timmer
Tech Lead DevSecOps at Ahold Delhaize
Uitgeest, North Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolReinier Timmer is a Tech Lead DevSecOps with nine years of experience driving CI/CD and developer-platform initiatives at Ahold Delhaize, backed by a longer career in software engineering and research. He combines hands-on development in Java, Kotlin and TypeScript with cloud-native expertise in Docker, Kubernetes and Azure to build "paved road" solutions that take teams from code to cloud with minimal friction. A pragmatic automation advocate, he contributes to open-source projects like the Kubernetes controller for GitHub Actions self-hosted runners, improving runner usability and reliability. Outside of work he channels creativity into blogging, saxophone and music editing, bringing a maker’s mindset and clear communication to cross-functional teams.
10 years of coding experience
11 years of employment as a software developer
Master of Science (MSc), Computer Science, Master of Science (MSc), Computer Science at Vrije Universiteit Amsterdam
English, Dutch
Github Skills (14)
operator10
kubernetes10
github-ci10
go10
githubaction-workflow10
kubernetes-pods10
dockers9
cicd9
docker9
api8
apidoc8
sys8
software-design8
system-design8
Programming languages (8)
Github contributions (5)
actions/actions-runner-controller
Apr 2020 - Feb 2021
Kubernetes controller for GitHub Actions self-hosted runners
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:6 reviews, 17 commits, 12 PRs in 10 months
Contributions summary:Reinier primarily contributed to the backend and infrastructure aspects of the Kubernetes controller for GitHub Actions self-hosted runners. Their work involved enhancing the runner's functionality by adding support for labels, organization-level runners, and parametrizing the working directory. They also addressed compatibility issues and fixed a bug related to deleting pods upon runner registration failures. These changes indicate a focus on improving the usability and maintainability of the runner controller and its interaction with GitHub.
kubernetesoperator
reiniertimmer/actions-runner-controller
Mar 2020 - Jan 2023
Kubernetes controller for GitHub Actions self-hosted runnners
Contributions:2 PRs, 47 pushes, 28 branches in 2 years 11 months
controllerhostedself-hosted-actionskuberneteskubernetes-controller
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