Yunqiu Xu
Machine Learning Engineer at TikTok
Sydney, New South Wales, Australia
Summary
👤
Senior🎓
Top SchoolYunqiu Xu is a machine learning engineer based in Sydney with 10 years of technical experience and 5+ years focused on applied ML across recommendation systems, NLP, computer vision, and cybersecurity. Currently working on Live Trust & Safety at TikTok, Yunqiu applies LLM reasoning, multi-modal models, RAG, and test-time scaling to tackle misinformation and extreme-risk moderation. Prior roles include improving relevancy and upsell/payment recommendations at Rokt and an academic track record as a UTS PhD and postdoctoral researcher with multiple publications. Comfortable bridging research and product, Yunqiu rapidly prototypes state-of-the-art ideas into scalable pipelines and communicates results to cross-functional teams. A polymath background spanning polymer chemistry to reinforcement learning hints at uncommon breadth and a persistent appetite for mastering new domains.
10 years of coding experience
6 years of employment as a software developer
Doctor of Philosophy - PhD, Polymer Chemistry and Physics, Doctor of Philosophy - PhD, Polymer Chemistry and Physics at Zhejiang UniversityMaster's degree, Information Technology, WAM 86, High Distinction, Master's degree, Information Technology, WAM 86, High Distinction at UNSW AustraliaDoctor of Philosophy - PhD, Reinforcement Learning, Natural Language Processing, and Intelligent TransportationSystem, Doctor of Philosophy - PhD, Reinforcement Learning, Natural Language Processing, and Intelligent TransportationSystem at University of Technology SydneyData61 5th International Optimisation Summer School
Chinese, English
Stackoverflow
149reputation
16kreached
0answers
6questions
Github Skills (50)
mahjong9
solve9
multiagent-systems8
deep-reinforcement-learning8
reinforcement-learning8
game-ai8
20488
nethack7
pytorch7
game-theory7
statistics7
interaction7
q-learning6
openai6
neural-network6
Programming languages (5)
Github contributions (5)
YunqiuXu/my_notes
Aug 2016 - Aug 2018
Contributions:107 commits, 106 pushes, 1 branch in 2 years
YunqiuXu/Readings
Aug 2017 - Apr 2018
Contributions:134 commits, 131 pushes, 1 branch in 8 months
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