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yifeng wang

@yifengwang

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I’m a Machine Learning Scientist with experience in building and optimizing algorithms

China

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What I'm looking for

I’m now looking for opportunities where I can apply my skills to solve challenging algorithmic problems and collaborate on impactful AI products, preferably in a remote-friendly environment.

Currently, I’m working at PayPal’s Global Data Science Department, where I focus on developing risk control models using advanced techniques like contrastive learning, graph neural networks, and multi-task learning to improve model interpretability and generalization.

Previously, I worked as an Advertising Algorithm Engineer intern at Kuaishou, where I optimized feed ad ranking models and enhanced conversion performance by refining feature extraction and multi-task frameworks.

I’m proficient in Python for machine learning, with additional experience in C++ for game development and Java for Android development. I’m also CET-6 certified, allowing me to comfortably read and understand English academic literature and stay up to date with the latest research.

I’m now looking for opportunities where I can apply my skills to solve challenging algorithmic problems and collaborate on impactful AI products.

Experience

Work history, roles, and key accomplishments

Current

Machine Learning Scientist

Current

PayPal

Jul 2022 - Present (2 years 11 months)

Currently working in PayPal’s Global Data Science Department, focusing on developing risk control models using advanced techniques like contrastive learning, graph neural networks, and multi-task learning to enhance model interpretability and generalization.

risk control models graph neural networks multi task learning Contrastive Learning Model Interpretability Data Science