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# PoAn Yang

- **Email:** yangpoan@gmail.com

- **GitHub:** [github.com/FrankYang0529](https://github.com/FrankYang0529)

- **Location:** Tokyo, Japan

## About

I am a passionate, adaptable, and self-motivated software developer with a strong track record of impactful open-source
contributions. My primary interest lies in distributed systems, and I am eager to take on roles that involve solving
large-scale challenges. At Grab, I successfully reduced API latency by 14x while supporting higher QPS. I bring extensive
backend experience across diverse domains, including web services, Kubernetes controllers, Apache Kafka, Apache
Airflow development, and CI/CD implementation. I dive deep into upstream source code to resolve root causes.

## Experience

### Apache Kafka Committer

*July. 2025 - Present*

- Authored over 10 Kafka Improvement Proposals, including KIP-1101 as a major contribution. KIP-1101
reduces the size of consumer group objects by up to 79% and significantly lowers hash computation overhead
in rack-aware partition assignment.

- Enhanced the stability of the new consumer group protocol and added features to multiple Kafka tools.

### Apache YuniKorn Committer

*Aug. 2023 - Present*

- Apache YuniKorn is a scheduler for running Big Data & ML on Kubernetes. It gives fine-grained control over the resource quota for diﬀerent tenants and performs faster than the default scheduler.
- My work is to solve all kinds of issues, including analyzing root cause of flaky test cases, adding end-to-end test cases & new features like User and Group quota enforcement, and improve performance & documents.

## Education

- **National Cheng Kung University**, MS in Computer Science (*2015 - 2017*)
- **National Cheng Kung University**, BS in Computer Science (*2011 - 2015*)
