Profile / 2026

Jie-Kai Chang

ML systems engineer working on distributed systems, Kubernetes-native ML infrastructure, and GPU systems.

I'm an undergraduate at Yuan Ze University working at the intersection of research and infrastructure. My work spans machine learning (LLMs, computer vision, multimodal, inference, training, RL) and the systems that run it (distributed systems, Kubernetes-native ML infrastructure, GPU systems, parallel computing).

Most of that work happens in the open. I'm Vice President (PMC Chair) & committer of Apache Mahout, and a member of Ray and KubeRay, with 107+ merged pull requests and 135+ merged pull requests reviewed across the three projects.

Research areas

My current interests fall into two closely related areas.

A

Machine learning & LLMs

How can large language, vision, and multimodal models be trained and served efficiently, and how should inference, training, and reinforcement-learning pipelines be built so they scale without losing reliability?

LLMs / computer vision / multimodal / reinforcement learning / inference / training

B

Systems for machine learning

How do distributed systems, Kubernetes-native infrastructure, and GPU systems combine into a platform that ML workloads can depend on at scale, and how is that platform kept correct as it grows?

Distributed systems / Kubernetes-native ML infrastructure / GPU systems / parallel computing / ML systems

Most of this work is public: the CV lists the projects, pull requests, and talks behind each area.

Contact

If you are working on LLMs, Computer Vision, ML Infrastructure, Distributed Systems or GPU systems, I welcome thoughtful conversations and possible collaborations.

jiekaichang@apache.org