Xiaohan Fei is a Principal Applied Scientist based in Kirkland with 11 years of experience bridging computer vision, robotics, and machine learning to deliver production-scale AI systems. He led the science behind Amazon Nova Reel, a high-profile video generation model announced by Amazon's CEO and launched at re:Invent 2024, and has progressed through research and applied roles across AWS, Amazon, Meta, and NVIDIA. His academic work at UCLA produced the award-winning research in robot vision (Best Paper, ICRA 2019) and the open-source XIVO visual-inertial odometry project, where he contributed core algorithmic and visualization improvements. Xiaohan specializes in 3D vision, sensor fusion, SLAM, and semantic mapping, combining theoretical depth from a UCLA PhD with hands-on engineering that ships products. Colleagues describe him as someone who moves seamlessly between research breakthroughs and robust, maintainable code—often improving numerical cores and developer ergonomics behind the scenes.
11 years of coding experience
10 years of employment as a software developer
Science, Science at Huzhou High School
University of California, Los Angeles
Advanced honor Class of Engineering Education (ACEE) Chu-Kechen College, Advanced honor Class of Engineering Education (ACEE) Chu-Kechen College at Zhejiang University
Contributions:4 reviews, 198 commits, 2 PRs in 1 year 10 months
Contributions summary:Xiaohan primarily contributed to the core logic of the X Inertial-aided Visual Odometry project. Their contributions included implementing a debug view switcher, optimizing matrix product differentials, and adding descriptions to source and header files. The changes indicate a focus on improving the visualization of feature tracking and enhancing the codebase's overall structure, as well as contributing to the mathematical core of the project.
Contributions:82 commits, 13 pushes in 4 years 6 months
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Xiaohan Fei - Principal Applied Scientist at Amazon