Wei Liu Email and Phone Number
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As an Engineering Director at Sift, I lead the vision and execution of building a next-generation ML platform that powers fraud detection and content moderation products for thousands of customers worldwide. I also oversee the machine learning operations and data science teams that ensure model stability, data quality, and innovation at the Internet scale. With a Ph.D. degree in computer vision and machine learning and over 10 years of industry experience, I have a passion for solving complex and impactful business problems using data and ML technologies. I have worked across diverse domains and roles, from computer vision and natural language processing to search and recommendation systems, from researcher and engineer to data scientist and manager. My broad and deep expertise helps me empathize with and empower all the stakeholders and contributors in this highly interdisciplinary field and build effective teams, coalitions, and a shared vision.
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Senior Director Of Engineering (Machine Learning And Data Science)Sift Jan 2024 - PresentSan Francisco, California, Us
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Engineering Director (Ml Platform, Mlops, And Data Science)Sift Oct 2022 - Jan 2024San Francisco, California, UsVision and execution of building next-generation ML platform.Machine learning operations to ensure model stability and address data drift problems at the Internet scale.Long-term innovation in machine learning modeling, fraud behavior analysis, and data science research.10+ patents and more to come
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Engineering Director - Data ScienceSift Jul 2021 - Oct 2022San Francisco, California, UsML modeling and data science
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Head Of Data ScienceSift Jul 2020 - Jul 2021San Francisco, California, UsBuilding and managing a high-performing data science teamResearch & development of AI/ML technologiesBot detection, graph, and behavior model
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Principal Data ScientistSift Mar 2019 - Aug 2020San Francisco, California, UsBuilding AI models for spam/scam detection in a highly adversarial environment.Researching & prototyping text & image deep learning models to detect and cluster spam content, fake profile, and bot activities, etc.Provide input and technical guidance in ML system architecture and production deployment.
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Technical Advisor (Machine Learning)Upnext Dec 2021 - 2023NLP and content recommendation using LLM and transformers -
Principal Machine Learning EngineerZillow Sep 2016 - Mar 2019Seattle, Washington, UsDesign nextgen ML applications using Spark, Scala, H2O, and AWS.Shape personalized home buying experiences through intelligent and data-driven algorithms.Improve and automate home buying and selling decisions in Zillow Offer.Connect data science to engineering best practices, and deliver high-quality ML systems from prototype to production.Drive technical direction of an outstanding dev team, and closely work with world-class scientists. -
Software Development Engineer IiMicrosoft Sep 2012 - Sep 2016Redmond, Washington, UsNatural language processing & understanding, machine learning, Big Data technologiesBing Local Data extraction, PowerBI natural language query enginePowerBI project was mentioned in executive memo:http://www.microsoft.com/en-us/news/Press/2013/Jul13/07-11memo.aspx -
Software Development EngineerAmazon Oct 2011 - Sep 2012Seattle, Wa, UsDesign and develop intelligent systems to improve Amazon catalog item data.Develop data fusion/reconciliation algorithms that produce descriptive yet concise item data from multiple heterogeneous data sources.Programming in Java and Python to process Big Data on Amazon EMR and other platforms.First-prize winner of Amazon 2012 competition in machine learning (PricingRandomForest track) -
Postdoctoral Research FellowUniversity Of North Carolina At Chapel Hill Jun 2011 - Sep 2011Chapel Hill, Nc, UsResearch and develop algorithms for registering and analyzing 3-D medical images. -
Doctoral Student & Teaching AssistantFlorida Institute Of Technology Aug 2007 - May 2011Melbourne, Florida, UsPublished 6+ peer-reviewed papers in top-tier conferences and journalsDeveloped a novel mesh-less graphics model for non-rigid deformation representation, with applications in shape and image registration.Developed a novel feature detector and descriptor for flow-field visualization and recognition.Developed a correspondence-less registration method using image moments. -
Research EngineerZhong Tu Sci & Tech Ltd Jan 2006 - Aug 2007Research and develop machine vision algorithms for product-inspection system.Lead a software group and help defining the overall software and system architecture.Shipped 3 products in a single year that fully automates industrial meter calibration (water meter and pressure meter). My algorithms read these meter in extremely noisy environment (foggy, underwater, reflection and vibration etc.) by combing machine learning and signal processing techniques.
Wei Liu Education Details
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Florida Institute Of TechnologyComputer Science -
Central South UniversityComputer Science
Frequently Asked Questions about Wei Liu
What company does Wei Liu work for?
Wei Liu works for Sift
What is Wei Liu's role at the current company?
Wei Liu's current role is Engineering Director at Sift | ML Platform, MLOps, Data Science.
What is Wei Liu's email address?
Wei Liu's email address is sm****@****ail.com
What schools did Wei Liu attend?
Wei Liu attended Florida Institute Of Technology, Central South University.
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