# Jianjian Xie

> Working on Data & AI Infrastructure

Location: San Mateo, California, United States
Profile: https://flows.cv/jianjian

Data & AI Infrastructure Engineer. Also Full-stack machine learning engineer with significant data science experience. 
Email: jja725@gmail.com

## Work Experience
### Senior Software Engineer @ Snowflake
Jan 2024 – Present
Query Compiler/Optimizer

### Staff Software Engineer @ Alluxio
Jan 2021 – Jan 2024
• Led the collaboration with Presto & Trino to help build better OLAP system
• Building cloud-native data access solution with Alluxio Fsspec, which overcomes I/O challenges in ML pipelines and improves GPU utilization to 90%+
• Collaborate with many open source users on the adoption of Alluxio to improve Data analytics (Presto & Trino) & AI (Ray & Pytorch) performance and cost efficiency
Checkout these collaborations:
https://arxiv.org/abs/2406.05962 
https://prestodb.io/prestocon-day/agenda/#leveraging-ttl 
https://www.uber.com/blog/optimizing-hdfs-with-datanode-local-cache/ 
https://www.uber.com/blog/speed-up-presto-with-alluxio-local-cache/

### Research Engineer, Machine learning @ Indeed.com
Jan 2018 – Jan 2021
Build Budget recommendation service which supports the core business of Indeed

### Data Scientist and Data Engineer @ Scry Analytics
Jan 2017 – Jan 2018 | San Francisco Bay Area
Designing and develop end-to-end architecture and machine learning algorithms

### Data Science Competition Medal winner @ Kaggle
Jan 2016 – Jan 2016
Having fun with machine learning


## Education
### Master of Science (M.S.)
Columbia University


## Contact & Social
- LinkedIn: https://linkedin.com/in/jianjian-xie

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Source: https://flows.cv/jianjian
JSON Resume: https://flows.cv/jianjian/resume.json
Last updated: 2026-04-05