Michal Kielbowicz
Software Engineer at Sourcegraph
Lower Silesian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolMichal Kielbowicz is a pragmatic software engineer with 11 years of experience building scalable, performance-sensitive systems across cloud, GIS, and large-scale infrastructure. He’s contributed to flagship open-source Kubernetes test and perf tooling and helped optimize massive GKE deployments at Google, bringing deep DevOps and performance engineering chops. At Waymo he spanned the full stack to add payment integrations and design fraud-detection systems, and he now applies functional-programming rigor at Sourcegraph with Scala and Haskell. Michal is analytical and efficiency-minded—he’s reduced map preprocessing from weeks to days and cut integration costs dramatically by automating metadata syncs—while preferring code and collaboration over meetings. Based in Lower Silesia, Poland, he combines a strong academic grounding in computer science with a background in psychology that informs his team-first approach to engineering.
11 years of coding experience
8 years of employment as a software developer
Master’s Degree Computer Science, Master’s Degree Computer Science at Wrocław University of Science and TechnologyBachelor's degree Psychology, Bachelor's degree Psychology at Uniwersytet SWPS
Polish, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (15)
testing10
kubernetes10
automation10
automations10
docker10
go10
prometheus10
k8s10
dockers10
cicd10
kubernetes-pods10
performance-testing10
bash9
bosh8
grafana7
Programming languages (17)
Github contributions (5)
kubernetes/perf-tests
Apr 2021 - Oct 2022
Performance tests and benchmarks
Role in this project:
DevOps Engineer & Performance Engineer
DevOps Engineer & Performance EngineerContributions:71 reviews, 41 commits, 38 PRs in 1 year 6 months
Contributions summary:Michal primarily focused on improving the performance and maintainability of the Kubernetes performance test suite. They addressed API responsiveness issues by excluding specific subresources from the measurement filters. The user also made changes to the Prometheus dashboards and configurations for better monitoring. Furthermore, they introduced a snapshot clean-up script for Boskos resources and configurable paths for the exec deployment.
stress-testingbenchmarkingperformance-testsbenchmarkperformance
kubernetes/test-infra
May 2021 - Oct 2022
Test infrastructure for the Kubernetes project.
Role in this project:DevOps Engineer
DevOps EngineerContributions:22 reviews, 30 commits, 29 PRs in 1 year 5 months
Contributions summary:Michal primarily focused on enhancing the project's testing and automation infrastructure. Their contributions include modifying the kubetest framework by making the TearDown operation a blocking one to improve reliability and debugging issues in the kubemark setup. They also addressed setup configurations, improved ProwJob queue functionality, and worked on configurations in the prow directory. Several commits show work on the prow configuration and testing pipelines.
test-infrastructuretestinginfrastructurek8s-sig-testingkubernetes
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