Shijun Wei

Experience

1. Principal Scientist, Data

   Edwards Lifesciences

   Apr 2023 — Present

   Built a vision AI pipeline using Python in Snowflake with 95% accuracy to detect high ergonomic risk gestures of production line workers, automating risk evaluation process by saving 3200 hours, translating to an estimated cost reduction of $250k for each product annually. Developed and fine-tuned a Retrieval-augmented generation (RAG) chatbot powered by a Large Language Model (LLM) with low cost, utilizing diverse data sources to effectively address and resolve complaints for Sales Department, resulting in a 20% reduction in resolution time.Led ML project using Python, Pyspark, SQL and collaborated with cross-functional teams in supply chain to forecast machine anomalies, resulting in a 30% reduction in downtime, saving $1.2 million.Replaced the vendor solution by developing time-series forecasting models on components usage with data integrated from various data sources(JDE, JDA.etc), saving 1.2 million each year.Created automated end-to end data pipelines(ETL,Dashboard) using Python, Pyspark & SQL to address different internal stakeholders’ needs and the pain points in business.

Education

• University of California, Davis - Graduate School of Management

  Master of Science

• Jinan University

  Bachelor of Engineering

• University of Cincinnati

  PhD