VP Engineering, Algorithms & Distinguished Scientist @ Instacart

I lead the Aglorithms team that focuses on using machine learning for e-commerce and fulfillment at Instacart. Previously, I led the Research & Applied Science organization at WeWork, working on NLP, computer vision, robotics, data management, sensor networks, ubiquitous computing, etc. In my previous jobs, I worked on machine learning and text understanding. My team built large-scale NLP pipelines for short text and document understanding, and we developed data-driven semantic networks to enable text understanding.


  • VP Engineering, Algorithms & Distinguished Scientist, Instacart (present)
  • Editor in Chief, IEEE Data Engineering Bulletin (present)
  • VP Engineering & Distinguished Scientist, WeWork
  • Director of Natural Language Processing, Amazon
  • Engineering Manager and Research Scientist, Facebook
  • Staff Research Scientist, Google Research
  • Senior Researcher, Microsoft Research
  • Research Staff Member, IBM Research


  • IEEE Fellow, 2017
  • Best Paper Award, Short Text Understanding Through Lexical-Semantic Analysis, in the 31st International Conference on Data Engineering (ICDE), 2015
  • ICDM 10 Year Highest Impact Paper Award, Moment: Maintaining closed frequent itemsets over a stream sliding window, in ICDM 2004
  • Best Student Paper Runner-Up Award, Inverse Time Dependency in Convex Regularized Learning, in the 9th International Conference on Data Mining (ICDM), 2009
  • Best Paper Award, Modeling and Querying E-Commerce Data in Hybrid Relational-XML DBMSs, in the 27th International Conference on Conceptual Modeling (ER), 2008