Xiaoย Wang

Applied Scientist at Microsoft

Redmond, Washington, United States
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Summary

๐Ÿคฉ
Rockstar
๐ŸŽ“
Top School
Xiao Wang is an Applied Scientist and MS candidate in ECE at UIUC with eight years of engineering and research experience focused on LLMs, RAG, and applied ML systems. At Microsoft, Xiao built a multilingual LLM code-translation and unit-test automation framework that boosted test coverage by 42% and helped create a multilingual code-completion benchmark for GitHub Copilot across 10 languages. Their research on iterative and verifiable RAG for medical QA achieved SOTA results and led to publications and collaborations with Microsoft and NIH, demonstrating a knack for translating academic advances into practical, auditable systems. An active open-source contributor, Xiao optimized LLM reinforcement-learning tooling (verl) with sequence parallelism and SFT performance improvements used in production-grade workflows. Based in Redmond, they seek new graduate roles in SDE, MLE, or Applied Science, blending deep research chops with hands-on system engineering.
code7 years of coding experience
job1 year of employment as a software developer
bookMaster of Science - MS, ECE, Master of Science - MS, ECE at University of Illinois Urbana-Champaign
bookBachelor of Engineering - BE, Electrical Engineering, Bachelor of Engineering - BE, Electrical Engineering at Zhejiang University
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Github Skills (7)

transformers10
pytorch10
machine-learning10
large-language-models10
python10
llm10
reinforcement-learning9

Programming languages (7)

TypeScriptDockerfileShellHTMLJupyter NotebookPythonCuda

Github contributions (5)

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volcengine/verl

Nov 2024 - Mar 2025

verl: Volcano Engine Reinforcement Learning for LLMs
Role in this project:
userML Engineer
Contributions:11 reviews, 7 PRs, 23 comments in 5 months
Contributions summary:Xiao primarily contributed to the development and optimization of the Verl framework, specifically focusing on large language model (LLM) reinforcement learning. Their work includes enhancements to the VLLM rollout process, such as correctly passing parameters for GPU utilization and enabling performance logging. Furthermore, the user implemented sequence parallelism and padding removal optimizations for the SFT trainer, along with adding multi-turn SFT support. The user also incorporated LigerKernel for SFT performance improvements.
Contributions:296 pushes in 1 day
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Xiao Wang - Applied Scientist at Microsoft