Jiahuang (Jacob) Lin
Jacob Lin

Machine Learning Engineer

Hi, I'm Jacob.

I'm a machine learning engineer working on machine-learning systems and RL โ€” training and serving large models, GPU kernels, and the infrastructure around them. I like understanding systems from first principles and writing the explanation I wish I'd had.

Explore

ML Lessons

A linearized library of hands-on ML-systems lessons: RL post-training, Triton kernels, LLM serving (vLLM / SGLang), distributed training, generative modelling, and the durable ML interview canon.

Browse the lessons โ†’

Writing

An archive of earlier posts on algorithms, systems, and engineering โ€” design patterns, distributed systems, compilers, and databases.

Read the archive โ†’