Markus Thömmes
Staff Software Engineer Guarded Containers at Chainguard
Trier, Rhineland-Palatinate, Germany
Summary
🤩
Rockstar🎓
Top SchoolMarkus Thömmes is a Staff Software Engineer with 14 years of experience building and hardening cloud-native platforms and developer tooling, currently focusing on guarded containers at Chainguard. He combines deep Go expertise with growing Rust skills and a strong DevOps sensibility, shipping reliable CI/CD, code generation, and testing infrastructure across projects like Kubernetes, client-go, and Knative. Markus has led core platform efforts at DigitalOcean and Red Hat, contributed significant improvements to high-profile open-source projects (e.g., Kubernetes code generation and Knative eventing), and brings practical experience in both backend systems and test infra. He’s known for pragmatic refactors that reduce allocations and improve debuggability, and for smoothing dependency and build pain points in large codebases. Based in Trier, Germany, he pairs systems-level thinking with hands-on fixes that make shipping code “easy as pie.”
14 years of coding experience
10 years of employment as a software developer
Bachelor of Science (B.Sc.), Business Information Management - Application Management, Bachelor of Science (B.Sc.), Business Information Management - Application Management at Duale Hochschule Baden-Württemberg Stuttgart
German, English, French
Stackoverflow
3,100reputation
149kreached
129answers
3questions
Github Skills (71)
dependency-management10
testing10
test-framework10
bash10
websocket10
automation10
code-generation10
infrastructure10
build-automation10
k8s10
openwhisk10
dockers10
performance-optimization10
kubernetes-pods10
serverless-architectures10
Programming languages (20)
Github contributions (5)
apache/openwhisk
Feb 2016 - Mar 2020
Apache OpenWhisk is an open source serverless cloud platform
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:7 reviews, 349 commits, 672 PRs in 4 years 1 month
Contributions summary:Markus made significant contributions to the backend infrastructure and the build process of the Apache OpenWhisk project. They worked on the code for extending the Wsk APIs, and implemented the initial setup for Gradle build scripts, while also making adjustments to the Docker files. Further work involved database script fixes, and changes to various parts of the system to accommodate the new authentication schema. The user's contributions included improvements to the container pool implementation, log handling, and the addition of new features such as per-namespace rate limiting.
serverless-cloudfunctionsserverlessapachedocker
knative/pkg
Oct 2018 - Dec 2021
Knative common packages
Role in this project:Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:179 reviews, 171 commits, 182 PRs in 3 years 2 months
Contributions summary:Markus primarily contributed to improving the Knative common packages, focusing on test and infrastructure enhancements. They added features to support ingress gateway communication by implementing hostname and IP support in the `test/spoof/spoof.go` file. They also added timeKey to the e2e tests and fixed license checks in the pre-submit tests to ensure the correct testing environment. Additionally, the user worked on implementing websocket client and implemented features to harden that component.
knativekubernetes
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