Matt Matejczyk
Staff Software Engineer at Google
Kozy, Śląskie, Poland
Summary
🤩
Rockstar🎓
Top SchoolMatt Matejczyk is a Staff Software Engineer with nine years of experience building and scaling cloud-native infrastructure at Google, specializing in Kubernetes, GKE scalability, and performance testing. He has driven reliability and observability improvements across Kubernetes projects—contributing to test-infra, the API, core Kubernetes, and perf-tests—where his work on preserving logs, Prometheus integration, and endpoint annotation refinements improved debugging and network latency monitoring. As a SIG Scalability chair and technical lead for GKE scalability, he blends deep DevOps/SRE expertise with backend API changes to tackle both production reliability and performance bottlenecks. His background includes AdWords backend systems and earlier work in test automation and numerical simulation, reflecting a strong foundation in both applied research and production engineering. Based in Poland with a distinction-holding master's in computer science from Jagiellonian University, he pairs rigorous academic training with hands-on contributions to one of the most influential open-source ecosystems.
9 years of coding experience
7 years of employment as a software developer
Bachelor's degree, Computer Science, Diploma with distinction, Bachelor's degree, Computer Science, Diploma with distinction at Uniwersytet JagiellońskiMaster's degree, Computer Science, Diploma with distinction, Master's degree, Computer Science, Diploma with distinction at Uniwersytet Jagielloński w Krakowie
English
Github Skills (26)
kubernetes10
docker10
api-design10
scripting10
dockers10
cicd10
performance-testing10
script10
go10
prometheus10
kubernetes-pods10
sh10
g10
shell10
devops10
Programming languages (8)
Github contributions (5)
kubernetes/perf-tests
Jan 2019 - Apr 2021
Performance tests and benchmarks
Role in this project:
DevOps Engineer & Performance Engineer
DevOps Engineer & Performance EngineerContributions:122 reviews, 176 commits, 193 PRs in 2 years 4 months
Contributions summary:Matt's contributions primarily revolve around enhancing and maintaining the performance testing framework for Kubernetes. They implemented and integrated Prometheus, including setting up and tearing down the Prometheus stack, enabling the collection of critical performance metrics. Their work also involved creating features for ad-hoc testing, snapshotting Prometheus disk, and integrating with Probes for in-cluster network latency measurements. Furthermore, they addressed performance bottlenecks by optimizing code and fixing issues related to resource usage gathering and scheduling throughput validation.
stress-testingbenchmarkingperformance-testsbenchmarkperformance
kubernetes/test-infra
Jan 2019 - Apr 2021
Test infrastructure for the Kubernetes project.
Role in this project:DevOps Engineer & SRE
DevOps Engineer & SREContributions:15 reviews, 157 commits, 155 PRs in 2 years 3 months
Contributions summary:Matt primarily contributed to the test infrastructure, focusing on improving the reliability and debugging capabilities of the Kubernetes test suite. Their work involved modifying the test timeout behavior to preserve logs, adding logging for troubleshooting failures in the gsutil command, and correcting errors in Kubemark setup. Additionally, the user ensured the correct creation of firewall rules within the GKE environment for log dumping.
test-infrastructuretestinginfrastructurek8s-sig-testingkubernetes
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