Karun Thankachan

Karun Thankachan is a Senior Data Scientist specializing in Recommender Systems and Information Retrieval. He has worked across E-Commerce, FinTech, PXT, and EdTech industries. He has several published papers and 2 patents in the field of Machine Learning. Currently, he works at Walmart E-Commerce, improving item selection and availability. Karun also serves on the editorial board for IJDKP and JDS and is a Data Science Mentor on Topmate. He was awarded the Top 50 Topmate Creator Award in North America(2024), Top 10 Data Mentor in the USA (2025), and is a Perplexity Business Fellow. He also writes to 75k+ followers on LinkedIn and is the co-founder of BuildML, a community running weekly research papers discussions and monthly project development cohorts.