Yang Jun
Senior Software Enginer at zte
Chengdu, Sichuan, China
Summary
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RockstarYang Jun is a Senior Software Engineer based in Chengdu with 5 years of experience specializing in backend and DevOps for cloud-native systems. He contributes to high-profile Kubernetes projects—perf-tests, metrics-server, and kubernetes core—focusing on performance testing, metrics collection, kubelet reliability, and logging improvements. At ZTE he applies this open-source experience to production-grade systems, emphasizing robust observability and accurate performance benchmarks. Notably, his work often targets subtle reliability gaps (timeout tuning, scrape configuration, and build hygiene) that improve test fidelity and operational debugging.
5 years of coding experience
Github Skills (21)
kubernetes10
docker10
metrics-server10
performance-testing10
go10
prometheus10
kubernetes-pods10
logging10
testing9
debug9
container9
debugging9
dockers9
apidoc9
containerization9
Programming languages (6)
Github contributions (5)
kubernetes-sigs/metrics-server
Apr 2021 - Jan 2023
Scalable and efficient source of container resource metrics for Kubernetes built-in autoscaling pipelines.
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:553 reviews, 81 commits, 109 PRs in 1 year 9 months
Contributions summary:Yang primarily contributed to the metrics-server project by modifying code related to the Kubelet and overall system performance. They added and refined features using container start time, improved e2e test cases, and optimized the timeout settings and logging for kubelet endpoint access. Furthermore, they worked on fixing bugs, addressing code issues, and implemented features related to reporting metrics. The user also worked to ensure that the build environment used up to date versions of go.
containersscalablek8s-sig-instrumentationdockerscale
kubernetes/perf-tests
Jun 2021 - May 2022
Performance tests and benchmarks
Role in this project:DevOps Engineer & Performance Engineer
DevOps Engineer & Performance EngineerContributions:16 reviews, 7 commits, 8 PRs in 11 months
Contributions summary:Yang primarily focused on improving the performance testing infrastructure of the Kubernetes cluster. Their work included modifying configurations for Prometheus and metrics-server to ensure the accurate collection of performance metrics. The user's changes involved updating configuration files related to scraping metrics, making adjustments to ensure proper metrics collection for various providers, and removing dependencies. These modifications aimed to improve the reliability of the performance tests and the accuracy of the collected data.
stress-testingbenchmarkingperformance-testsbenchmarkperformance
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