Yifan Hao
Stealth
Palo Alto, California, United States
Summary
🤩
Rockstar🎓
Top SchoolYifan Hao is a systems-focused software engineer with a decade of experience designing and optimizing low-level infrastructure, currently a Member of Technical Staff at xAI after leading VMKernel scheduler work at VMware and Broadcom. He specializes in hypervisor and OS-level performance tuning across novel CPU architectures, with shipped features that reduced hypervisor tail latency and improved scheduler scalability on large CPU models. Yifan blends academic rigor (MS from UIUC) and practical kernel-hacking—his background includes real-time schedulers for deep learning workloads, GPU/driver internships at NVIDIA and Intel, and embedded systems work in Rust and C. He has led cross-BU roadmaps, collaborated with hardware partners, published internal papers, and holds patents in system optimization. Based in Palo Alto, he describes his approach as “build something fun,” reflecting a pragmatic curiosity that surfaces in unconventional projects (self-styled “Toilet Jammer”) alongside serious systems research.
10 years of coding experience
9 years of employment as a software developer
Bachelor's degree Computer Engineering, Bachelor's degree Computer Engineering at University of MichiganMaster of Science - MS Computer Science, Master of Science - MS Computer Science at University of Illinois Urbana-ChampaignBachelor's degree Electrical and Computer Engineering, Bachelor's degree Electrical and Computer Engineering at Shanghai Jiao Tong University
English, Chinese, Spanish, Russian
Github Skills (45)
timeseries-database10
monitoring10
time-series10
financial-analysis10
iot10
tdengine10
sql10
ai10
iiot10
scalability10
cloud-native10
database10
risc-v9
open-hardware9
speech9
Programming languages (9)
Github contributions (5)
haoyifan/InterestingProblem
Apr 2016 - Aug 2019
Contributions:25 pushes, 1 branch in 3 years 5 months
haoyifan/TDengine
May 2020 - Dec 2021
An open-source big data platform designed and optimized for the Internet of Things (IoT).
Contributions:24 pushes, 13 branches in 1 year 7 months
mqttbig-dataoptimizedbig-data-platformiot-platform
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