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Jia Pengcheng is a Senior Machine Learning Engineer at Wish since November 2022, specializing in ecommerce search, recommendation, and ranking systems. Prior experience includes roles as a Machine Learning Engineer at Workday, focusing on deep learning for natural language processing and search, and at Paytm Labs, where Jia developed large-scale recommendation systems and worked on NLP. Jia's career also includes time as a Senior Algorithm Engineer at Alibaba.com, enhancing search and NLP capabilities through deep learning, and as an Advisory Researcher at Lenovo, concentrating on natural language processing and text mining. Academic qualifications include a Master of Science in Computer Science with a focus on speech and language processing from The University of Sheffield and a Bachelor's degree in Software Engineering from the Beijing Institute of Technology.