Changxu Wang
Algorithm Engineer II at Alibaba Group
Hangzhou City, Zhejiang, China
Summary
👤
Senior🎓
Top SchoolChangxu Wang is an Algorithm Engineer II with 11 years of experience building scalable AI-driven ranking and search systems at Alibaba, currently focused on Youku search and ranking. He combines a strong academic foundation from Zhejiang University and Xidian University with hands-on industry experience across DAMO Academy, Morgan Stanley, and multiple internships. Deeply technical, he contributes to open-source nearest-neighbor search work (NSG), having implemented core graph loading, neighbor-finding, and pruning logic in a notable repo. His strengths span algorithm design, back-end C++ development, and productionizing research for high-traffic services. Based in Hangzhou, he blends research-minded rigor with practical engineering to improve retrieval relevance and system performance. Colleagues rely on him for turning complex algorithmic ideas into tested, production-ready components.
11 years of coding experience
3 years of employment as a software developer
Bachelor's, Computer Science, Bachelor's, Computer Science at Xidian UniversityMaster's, Computer Science, Master's, Computer Science at Zhejiang University
Github Skills (10)
algorithm10
nearest-neighbor-search10
data-structures10
algorithms10
graph-algorithms10
c-language10
cprogramming-language10
data-structure10
nearest-neighbors10
machine-learning9
Programming languages (13)
Github contributions (5)
ZJULearning/nsg
Sep 2018 - Mar 2019
Navigating Spreading-out Graph For Approximate Nearest Neighbor Search
Role in this project:
Back-end Developer
Back-end DeveloperContributions:20 commits, 16 pushes, 21 comments in 5 months
Contributions summary:Changxu focused on modifying the core `index_nsg.cpp` file, which suggests they are working on the implementation of the NSG (Navigating Spreading-out Graph) algorithm. They introduced changes related to graph loading, neighbor finding, and pruning functionalities. Additionally, they modified the `test_nsg_index.cpp` file to incorporate new parameters for the NSG construction and modified test codes. This indicates they are actively involved in building and testing this NSG implementation.
nearest-neighborapproximate-nearest-neighbor-searchnearestspreadingsimilarity-search
DelightRun/DeepPR
Feb 2016 - Jun 2016
Contributions:113 commits, 49 pushes, 1 branch in 3 months
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